Diesel Model Engines

Diesel Model Engines D Larry Renger 1 article aimed modeler comfortable starting running flying glowplug-ignited enginesthe standard type used United States intent familiarize uses running care model diesel engines Although vast majority modelers United States fly glow engines some interesting alternatives most-advertised alternative engine technology four-stroke engine followed diesel finally now turbine technology choose depends what planning Turbines speak themselves jets have money expertise desire alternative Four-stroke engines well documented available everywhere very quiet economical fuel swing very large props Diesels will never replace other types engines have place modeling used correct manner cannot matched anything else available Diesels very good swinging huge props example Mills 045 will haul nine-inchdiameter prop no problem much output power mode engine will run very happily no difficulty setting other end scale Team Racers always run diesel engines get 100 mph ds remarkable economy combined one-flip starts concept need deal early idea raw power generated glow engine may conveniently translated massive propeller thrust glow engine loves rev diesel massive torque machine Torque can drive big props Big props very efficient compared small props diesel can right application pull airplane similar size glow engine would fly average modeler diesel perfect engine models need real pulling power Scale RC CL Stunt Old-Timer Free Flight fair game ability diesel lug big prop strain proper gear 40 Model Aviation diesels I-r 35 06 049 55 035 Single-bail-bearIng crankshaft 3800 portIng mild timing long stroke Original Mills 045 DC Dart 035 Cub 049 McCoy 049 can get grab run well Left Front l-r PAW 049 br Mills 045 PAW 55 br 035 DC Dart 035 Rear PAW 35 br Silver Swallow 15 0S Max 10 FP Davis head Center Chinese Silver Swallow 15 r 3600 portIng exhaust crankshaft rotary tIming plain bearings Schnuerle-ported Russian MAP 15 left Bottom PAW 35 sIngle-ballbearing engine breaking Turns up 13-inch prop cranked 11 x 7 Zlnger 8400 rpm selection helicopters RC cars also benefit torque capability diesel power key diesel puts out raw power just huge torque capability lets use big props high gear ratios very efficiently net result can greatly improved performance Comparison applications require swinging large prop maximize thrust fourstroke engines diesels have advantages over typical glow engines Both types much economical fuel usage much quieter glow engine also certain amount interest both engine types simply because technically possible work well Now select between two types suspect although four-stroke engine gets attention advertising modelers have diesels own four-strokes Good workable diesel engines have steady production throughout world since before invention glow plug Until recenfly diesels popular outside US glow engines because fuel components easier get intro/alcohol mix use Workable production four-stroke engines relatively recent development modeldom Factors favor four-stroke ease starting running adjustment latest designs low percentage oil required four-stroke fuel helps keep models very clean compared either glow diesel However power-to-weight ratio four-stroke lowest three types Four-stroke engines expensive complex fragile compared glow engines diesels size four-stroke engine needs about double capacity glow engine given model comparison diesel typically specified size smaller equivalent glow engine example 19 diesel will fly 35 CL Stunt model Diesel model engines built like tanks February 1997 41 incredibly durable diesel will tune easily run essentially size prop modification possible run 16-inch prop 35 produce usable power damage engine power output may ideal sometimes ability swing huge prop rpm need Glow engines generally need designed around particular rpm range happy turning other-size propellers Excess wear unsteady settings overheating usually results several other advantages diesels fuel economy welldesigned diesel about twice good glow engine glow plug required cant burn out starting batteries unnecessary diesel cant flame out because fuel drop hit glow element Battery booster systems idle completely unneeded too Diesels can incredibly small because dont need accommodate glow plug element head head design can optimized burning fuel extra cavity glow coil disturbing flow negative side diesels use funnysmelling greasy fuel hard start because require adjustment two major tuning devices instead Diesels relatively hard find experts rare 0-RING SEAL CyliNDER C0MRESSI0N ADJUSliNG SCREW CYliNDER HEAD C0NTRA-PST0N COMBUSliON CHAMBER CONNECIiNG ROD ___0 CRANKSHFr So what secret behind little-known engine type Diethyl ether Ether bursts flame column air saturated ether rapidly compressed Glow plug engines use glowing coil platinum alloy ignite nitro/alcohol fuel mix Diesels time ignition point diethyl-ether/kerosene fuel charge controlling engines compression ratio As piston rises top stroke compresses heats trapped air/fuel mixture ether detonates start burning main power component kerosene Compression ratios much higher used glow engine improves thermal efficiency Kerosene has higher energy content per pound alcohol fuel economy enjoys second boost resulting roughly double run time per ounce fuel compared same power output glow engine As glow oil engine lubrication contained fuel combustion process model diesel differs automotive industrial diesel engines air compressed higher levels model engines oil sprayed combustion chamber fine mist moment combustion start hot compressed air starts burn fuel need chemical electric igniter process controlled injector timing amount pattern spray OK use glow plug get engine started quickly cold isnt like own dear platinum gems Back model diesel have chemical will flash Second contra-piston diesel head sets compression ether/kerosene fuel detonates just right time cycle CRANKCASE particular temperature engine temperature can controlled compression ratio structure achieve later gives us ability time firing engine precisely match needs fuel weather propeller running particular day tuning diesel engine set running glow engine can stop engine add remove head shims change fuels hope best diesel adjusted knowledgeable modeler can set run just right Diesel Built Look drawing can see usual crankshaft case cylinder pistonlrod cylinder head parts common model engines addition second stationary piston fits bore engine form upper surface combustion chamber new piston known contra-piston Compression ratio controlled screw lever adjusts clearance between contra-piston engines regular piston top stroke Diesels built much ruggedly glow engines because work higher pressures combustion phase Oddly temperatures tend below glow engines Because high pressures ball-bearing-supported crankshafts seem useful improve performance low speeds diesel glow engines needed high speed ranges Because larger-diameter props can used diesel morerugged crankshafts typical compared found other types engines much preferred prop break hard landing rather engine props later Setup Enough backgroundlets set up run diesel Specifically lets run PAW 35 Stunt Prop 11 x 5 engine still breaking As always really stout engine test stand mounted well off ground needed Keeping engine well off ground helps keep sucking dust its easier work As usual tank centerline should bit below needle valvein case 3/ inch Flooded diesels major pain clear out worst case can destroy engine because hydraulic lock between piston contra-piston can make very good case clamping fuel hose shut filling tank diesel-equipped model way dont use silicone natural rubber fuel hoses fuel will make grow get weaker need types compatible gasoline Use model diesel fuel engine Car industrial diesel February 1997 43 Glow conversion K&B 21 has Davis head ABC ball bearings rear exhaust Perry carb turns 10 x 6 authority standard 35 Dont Get Stuck just Old Glue Use Professional Grade JetTM Adhesives Carl Goldberg Models though know better some modelers still talk themselves using budget brand CA saying After CAs same anyhow arent Well fact CA glues created equal Oh sure basic CA chemistry related beyond its like thinking clunker Mercedes same because both have four wheels youre about invest lot blood sweat tears mention money model simply doesnt make sense hold whole works together CA glues cant offer kind security JetTM products can Consider JetTM Professional Grade CA sold company whos business designing producing model planes formulation quality control standards have developed specifically tough tests youll putting through Like high vibration levels exposure fuels stresses severe airloads Plus theyre manufactured packaged right USA can make sure high standards will maintained So whenever youre tempted try cheap CA just ask yourself youd really want risk building plane glue might nothing repackaged version stuff sell fixing broken teacups Try Well bet youll decide go Pros time CARL GOLDBERG MODELS INC 4734W Chicago Ave Chicago IL 60651 6-FLYING 626-9550 312626-9566 Carl Goldberg Models 1996 fuel wont run several fuel manufacturers have provided addresses end article Avoid electric starters want keep engine length time Initial Starting Most diesels shipped compression level set correctly start engine let us assume some dear friend started playing setting before ever got chance run engine trick first find compression setting work needle-valve setting simply begin process empty fuel tank brand-new diesel easiest remove muffler initial starts engine still factory setting use Otherwise before getting fuel near engine screw compression lever down until piston just hits contra-piston turn engine over very slowly Unscrew lever 1/2 full turns setting should way undercompressed safe way approach starting prop turned exhaust ports closed squirt some fuel exhaust port Immediately turn engine over twice holding firmly onto prop diesel always capable starting first try Never casually flip prop diesel Once prepared start flipping prop key flip prop fast can Use chicken stick highly recommended Electric starters recommended because will destroy engine instantly hydro-locked because excess prime Flip prop close compression lever tiny bit time until engine fires short burst After 20 flips youll want reprime Eventually engine will fire run out prime Play prime compression until can get run reliably cold-start compression setting Fill tank open needle valve its recommended starting setting particular PAW two turns open 44 Model Aviation C SER VICE AT ITS BEST AD5L Sales Service Anything Radio Controlled Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAEfor 1996 Meter conversions ACE Airtronics Aristo-craft Cirrus EK Catalog containing lists Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline R/C maintenance hints KoPropo Pro-Line RCD Tower Hobbies World Engines & others Discover MCard VISA COD Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm UPS USMAIL FEDEX etc KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 810-486-4800 Fax 810-486-1603 Carefully choke-prime engine finger over venturi want fuel just get needle valvenot engine point repeat starting routine should suddenly have running diesel Now comes fun part diesel especially brand-new dieseldoesnt like continue running starting setting Typically need tighten compression down until engine smooths out first run new engine tighten compression until engine smooths out back off until hear slight intermittent miss burp Let engine run way about five minutes basic wear-in mating parts Pinch off fuel hose stop engine let cool off completely Break-In After first run cooldown can begin lean engine out slowly readjust compression rpm slowly over several runs always ready reduce compression sounds though going overheat mode technique lean out engine tiny bit play compression until just running burp needle tweak compression again some point engine will suddenly stop running know have hit absolute limit Remember what setting about /s turn open will running needle setting Speed diesel controlled compression needle pretty much left alone caveat find opening needle aids starting Note running settings compression needle can just crank back soon engine running Break-in diesel long process partly because temperatures lower glow engine because extra-tight piston fit required maintain high compression runs about five minutes length full cool-down between required heat-cycle engine parts stabilize case 37 3850 4661 1/tx 24965 3/19x29074 1/4x26890 3/8x286119 1/2x23011042143 1/32 x 338 43 50 60 1/20 x 336 43 50 60 1/ltx336 44 50 60 3/32 x 343 52 91 67 1/8x352 93 73 84 3/19x392 76 84 181 1/4x378 94113138 5/19x3189152 3/8x3105115148170 1/2x3135150175285 3/4x3225310 1/32 x 459997992 1/20 x 459997992 1/19x459987992 3/32x49982199114 1/8s47993112134 3/19s487199140159 1/4x4189152192179 5/19x4182234 3/Ox 4195210239295 1/2 x 4249285315339 3/4x4350471 MATCHED SHEETS 42 48 3/32x4125 142 1/8x4150 199 3/19x4194 189 1/4x4179 295 BIRCH DOWELS /819 3/1917 1/429 5/1627 3/837 1/254 5/874 AILERONS36 48 1/4x157 82 1/4x1-1/465 98 1/4x1-1/274 105 1/4n280 115 5/ltxl-1/474 105 5/ltxl-1/275 106 5/19x289 120 3/8x1-1/480 115 3/8x1-1/283 116 3/8x295 135 1/2x1-1/295 148 1/2x2106 150 1/4x275 1/4x3109 3/8x290 3/8x3131 1/2x3154 ADO FOR SHAPEDoEAOOIG EDGE 2530 SPRUCE TRIANGLES 36 3/8x3/854 1/2x1/275 314x31400 1/lbs i/S 1/its 1/4 1/its 3/8 1/its 1/2 3/32 SO 3/32x1/4 3/3253/8 3/32x1/2 1/8 SQ 1/8x3/16 1/8x 1/4 1/tx 3/8 1/8x1/2 1/8x3/4 1/8n1 3/16 SQ 3/its 1/4 3/its 3/8 3/ltx 1/2 3/16x3/4 3/its 1 1/4 SQ 1/4n3/8 1/4x1/2 1/4x3/4 1/4s 1 5/16 SQ 3/8 SQ 3/8s1/2 3/8x3/4 3/8n1 1/2 SQ 1/2x3/4 1/2x1 5/8 SQ 3/4 SO 3/4x1 BUNDLE DEALS 201/19x3 203/32x3 151/8x3 15 3/its 3 101/4x3 103/Oxi 51/2s3 201/16x4 101/16x4 15l3/32x4 103/32x4 101/8x4 51/8x4 1 0 3/its 4 53/16u4 101/4x4 51/4s4 53/8x4 51/2n4 TRIANGLES 1/4 3/8 1/2 3/4 1-1/2 10 12 13 17 11 14 15 19 11 13 14 15 21 28 35 14 18 21 24 30 38 22 27 29 42 52 27 36 40 53 67 49 90 76 60 81 99 36 799 970 875 1050 875 1050 695 1235 1150 875 1000 1400 950 1300 21 23 27 36 45 23 27 29 36 45 59 30 33 41 50 78 35 45 57 88 86 64 82 104 86 111 132 48 900 1075 925 735 835 36 29 33 40 54 68 131 225 3648 78119 ixssa78119LIj 1/its 378119 3/32x393144 3/16x3132202 1/4x3157237 3/8s3180307I. 1/253238302 3/4x3375519 1s353271 1/32x4123188 1/20x4123188c# 1/16x4123188 3/32x4149232 1/8x4169262 3/its 4197300 1/4x4237332 3/8x4357563 1/254482688 4114-6/b wood Sub/ext availability SUPERIOR LITE1224 48 1/8x6250395 1/Ox 12395750 1/4x12495950 LITE PLY1224 48 1/8s6100125 235 1/8s12125235 450 1/4x6125175 340 1/4x12175345 650 3 PLY BIRCH 122448 1/64x6140275495 1/94x 12279510950 1/325695100325 1/32x12100335635 1/its 695180325 1/its 12180335625 1/8x695180335 1/8x12180335650 4 PLY BIRCH 122446 3/its 6 109 215 345 3/its 12215 345 685 5 PLY BIRCH 122448 3/32s6135260490 3/32s12260500895 1/8s6145280525 1/8x12280550950 1/4x6125250300 1/4x 12230380725 7 PLY BIRCH 122448 3/8x6 150 285 525 3/8s12 285 5501000 8PLYBIRCH 12 24 48 1/2n6200350 575 1/2x123505801125 HARD MAPLE 18 1/4s1/445 1/4s3/850 1/4x1/256 3/8x3/850 3/8x1/256 3/8x3/465 3/8n175 3/8n1-1/2115 1/2x1/275 78 5/Ox 3/485 3/4s3/492 SPRUCE/ BA553648 6B 1/itx 1/42430 3/32x1/42539 1/8 SQ2129 1/8x1/42836 1/8x3/83549 1/8x1/24155 1/8s3/44793 3/19 SQ2838 3/16s3/84053 3/ltsl/24894 3/19x3/4c9588 1/4 SQ4557 100 1/4s3/85399 1/4e1/26181138 1/4x3/418311101189 3/8 SOt485 138 1/2S0 85 105 180 1/2s3/4 94 125 200 ADE $500 EXT5A FOR PACKAGING GROOVED LG MOUNTS 3/8x3/41/850 3/8s3/45/3250 1/2u3/43/1t55 WING SKINS3B36 1/32n12479 535 1/20n12479 535 1/19s12479 535 3/32512579 945 TRAILING EDGES36 1/8x1/2 29 3/16n3/4 35 1/4x139 5/ltxl-1/450 3/8n1-1/259 1/2n290 EPOXY 4-12 OZ 9 OZ 5 Minute425669 15 Minute425669 30 Minute425699 2 Hour425699 20 Minute429840 INSTANT GLUE 1/2 no orGF185 1 GE300 2 oo Thin GF550 oz Thin GE1950 1/2 oz Extra Thick200 1 no totra thick330 2oo Extra Thick900 8oo Extra thick1800 ODORLESS FOR FOAM 1/2 no Thin GE425 1 oo Thin GE785 200 Thin orGE1385 2 oo Acceterutur315 8 no ACC tetill695 Ext tipo 6149 tnt tipo x tine 6149 SEND 61 OR COMPLETE CATALOO3 INFO & HELP 806-745-6394 ORDERS ONI 1-800-687-5555 24 HR FAX 806-745-6483 Coot 40 State Handling Charge $6St pay UPS Add $550 CIt SEN 1800 estra PP API FPI accept Visa MC Discover personal checksD MAILLONE STAR MODELS 1 CII 93/ % tas Tesas US currency Mm wood order IlSOC ORDERS TO Rt9 Box 437 Lubbock TX 79423 BULLY 12 LSI2 UAV has defied designers designed new head new port layout produce 12 LSI2 engine runs smooth silk fantastic verticals flawless transition easy throttle control using APC 16x14 Propeller two stroke low maintenance high performance engine enhanced pump regulator Compare engine engines now used paffern competition BULLY will out perform others smoothness pulling power reliability $ 39800$ 29800 UAIMV Inc PO Box 1548 Bend OR 97709 rax 541-385-0117 Call 800-294-9506 BULLY 12 PRI2 Bully 12 PR/2 next generation full race engine enhanced porting modified head pump produce engine will set standard sport race flying Bully 12 PRI2 natural evolution 12 PR no way replaces makes race engine user friendly two stroke low maintenance high performance engine will satisfy lust power stock full line accessories four muffler types designed engine rugged four point soft mount February 1997 45 Only $7995 Toll Free Order Line$60O S/H Continenul U S Send Cash Mones Order8004798851CA Residents Add 825% Sales Tax FLYING FORTRESS ENTERPRISES Huntington Drive Marino CA 91108 believe new EASY HINGES will have same type impact hobby last solution dreaded tedious boring jab hinging control surfaces No gouging picking make oversize slots wood No messy epoxies EASY HINGES easy install theyre guaranteed bring smile tace first time use PAW least hour break-in will needed through break-in friction will higher normal runs will tend bit unstable Never leave new diesel running bench being ready adjust needle compression Keep listening sound engine ready adjust compression higher goes burping sound lower sounds smooth strained cant describe well will easily hear character diesels sound getting harsh hard preignition compression too high no substitute just running running diesels get feel run Sorry Play compression needle change props play some Learn engine should sound very different glow enginesometimes exactly opposite what glow experience will tell key find optimum settings head needle goal run needle lean can compression low possible takes lot back-and-forth tweaking two controls 46 Model Aviation 0400 hours mission headed dee rmany engines crank pilot shouts turn ing huge Wright radials snap life props spin machine guns flash morning begins like no other highly detailed B-t7 replica features state-of-the-an aviator style quartz alarm clock authentic sound visual effects can triggered manually alarm function An impressive sight desk mantel night stand will thrill SIGHTS SOUNDS historic warbird symbol Americas might As break-in proceeds engine runs reasonably steadily switch propeller expect use flying PAW will now lug 11 x 7 very nicely 8400 rpm may have experiment find new starting settings timing will have changed depending different size initial prop Typically smaller props require compression larger ones less Another good thing know starting setting cold engine slightly higher compression running setting hot engine slightly lower Shutdown Storage diesel shut engine down pinching fuel hosenever flood off As engine after running clear out much fuel possible running dry last run day stop engine running full speed removing fuel hose engine has stopped its own prime fire up fuel hose detached completely SUITABLE FOR ALL MODELS 112A thru GIANT SIZE history modeling few products truly revolutionary example proportional radios iron-on coverings CA glues permanently changed way build fly models thus qualify revolutionary S14-71 0 Package 24 $325 TSI Engines come Aluminum Chrome polished spinner classy Redhead highly polished aluminum spin ner TigerShark engines being admired enjoyed model ers world-wide selection covers popular sizes 40 46 75 91 110 engine utilizes proven ABC design TigerShark engine comes complete Glow Plug Muffler polished Aluminum Spinner 2 year warranty! Look TigerShark engines dealer today SC international RO Box 40116 indianapolis Indiana 46280 1-317-844-1978 http//wwwiquestnet/isc North West Model Distribution 21527 NE 227th Battie Ground WA 98604 1 -360-687-9452 High Performance rubber band powered models setting standard rubber band powered fun Check local hobby toy store find entire line Funcraft Planes Funcraft Planes Boynton Beach Florida clear out crankcase needle assembly After-run oil isnt usually necessary diesel unless going store engine very long time alcohol glow engine fuel attracts moisture components diesel fuel hygroscopic proviso though very important store engine exhaust ports open lets last fuel residues evaporate rather leaving attack metal surfaces some acids formed seems Wrap engine porous rag tissuenever plastic bag Let air unless perhaps live tropics closed container silica gel desiccant good tdea Available Engines Now have chance get familiar concept techniques diesels lets take look what available current collection runs 035 cubic inches PAW 55 DC Dart engines up PAW 35 single Ball Race Stunt engine nowhere near range sizes available Small diesels range down 006 cubic inches 1cc Big diesels run up about 60 10cc can get up monster engines 36 class using largest Davis conversion heads As glow engines little engines lot touchy big ones especially because difficulty clearing out flooded conditions recommend least 09 15cc size engine first diesel Because FAI competition largest assortment diesels available 15 25cc range list sources diesel engines provided end article Diesel Engines vs Converted Glow Engines Regarding relative merits designed-as-a-diesel engine vs glow engine converted diesel have consider several things opinion ideal diesel engine conceived designed purpose However very large however engine want may exist Glow engines available much 48 Model Aviation er band powered Warbird series featuring replicas greatest fighters history I11 quality rubber band powered MODELER COMPLETELINEGFEXIIAUSTSYSTEMS Tuned PipesHelicopter Systems Muffled Tuned Pipes4-Cycle Quiet Muffler Quiet Pipes Systems Marine PipesHeloballs WizardsExhaust Accessories HeadersEngine Accessories CHECK WITH YOUR DEALER TODAY 7935 Carlton Rd amento tornia 95828 916456-6932 918 456-7414 FAX Have fun good luck y Renger 13182 Sutton St Cerritos CA 90703 Sources Aerodyne Models 1924 East Edinger Santa Ana CA 92705 714 258-0805 Engines fuel other kits & goodies Altech Marketing 908 225-6144 Engines Carison Engine Imports 814 East Marconi Ave Phoenix AZ 85022 602 863-1684 Engines fuel accessories Eric Clutton 913 Cedar Ln Tullahoma TN 37388 615 455-2256 Engines fuel excellent book diesels Davis Model Products Box 141 Milford CT 06460 203 877-1670 Diesel conversion heads fuel FHS Supply Inc Box9 239 Bethel Church Road Clover SC 29710 800 742-8484 Red Mar fuels RIL Industries USA Box 5 Sierra Madre CA 91025 818 359-0016 Engines diesel conversion heads February 1997 51 E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available P-38 P-51 Brochure $100 SASE Flight Line Toys ox 3484 Springfield MO 65808 SYNE~mu A

Diesel Model Engines D Larry Renger 1 article aimed modeler comfortable starting running flying glowplug-ignited enginesthe standard type used United States intent familiarize uses running care model diesel engines Although vast majority modelers United States fly glow engines some interesting alternatives most-advertised alternative engine technology four-stroke engine followed diesel finally now turbine technology choose depends what planning Turbines speak themselves jets have money expertise desire alternative Four-stroke engines well documented available everywhere very quiet economical fuel swing very large props Diesels will never replace other types engines have place modeling used correct manner cannot matched anything else available Diesels very good swinging huge props example Mills 045 will haul nine-inchdiameter prop no problem much output power mode engine will run very happily no difficulty setting other end scale Team Racers always run diesel engines get 100 mph ds remarkable economy combined one-flip starts concept need deal early idea raw power generated glow engine may conveniently translated massive propeller thrust glow engine loves rev diesel massive torque machine Torque can drive big props Big props very efficient compared small props diesel can right application pull airplane similar size glow engine would fly average modeler diesel perfect engine models need real pulling power Scale RC CL Stunt Old-Timer Free Flight fair game ability diesel lug big prop strain proper gear 40 Model Aviation diesels I-r 35 06 049 55 035 Single-bail-bearIng crankshaft 3800 portIng mild timing long stroke Original Mills 045 DC Dart 035 Cub 049 McCoy 049 can get grab run well Left Front l-r PAW 049 br Mills 045 PAW 55 br 035 DC Dart 035 Rear PAW 35 br Silver Swallow 15 0S Max 10 FP Davis head Center Chinese Silver Swallow 15 r 3600 portIng exhaust crankshaft rotary tIming plain bearings Schnuerle-ported Russian MAP 15 left Bottom PAW 35 sIngle-ballbearing engine breaking Turns up 13-inch prop cranked 11 x 7 Zlnger 8400 rpm selection helicopters RC cars also benefit torque capability diesel power key diesel puts out raw power just huge torque capability lets use big props high gear ratios very efficiently net result can greatly improved performance Comparison applications require swinging large prop maximize thrust fourstroke engines diesels have advantages over typical glow engines Both types much economical fuel usage much quieter glow engine also certain amount interest both engine types simply because technically possible work well Now select between two types suspect although four-stroke engine gets attention advertising modelers have diesels own four-strokes Good workable diesel engines have steady production throughout world since before invention glow plug Until recenfly diesels popular outside US glow engines because fuel components easier get intro/alcohol mix use Workable production four-stroke engines relatively recent development modeldom Factors favor four-stroke ease starting running adjustment latest designs low percentage oil required four-stroke fuel helps keep models very clean compared either glow diesel However power-to-weight ratio four-stroke lowest three types Four-stroke engines expensive complex fragile compared glow engines diesels size four-stroke engine needs about double capacity glow engine given model comparison diesel typically specified size smaller equivalent glow engine example 19 diesel will fly 35 CL Stunt model Diesel model engines built like tanks February 1997 41 incredibly durable diesel will tune easily run essentially size prop modification possible run 16-inch prop 35 produce usable power damage engine power output may ideal sometimes ability swing huge prop rpm need Glow engines generally need designed around particular rpm range happy turning other-size propellers Excess wear unsteady settings overheating usually results several other advantages diesels fuel economy welldesigned diesel about twice good glow engine glow plug required cant burn out starting batteries unnecessary diesel cant flame out because fuel drop hit glow element Battery booster systems idle completely unneeded too Diesels can incredibly small because dont need accommodate glow plug element head head design can optimized burning fuel extra cavity glow coil disturbing flow negative side diesels use funnysmelling greasy fuel hard start because require adjustment two major tuning devices instead Diesels relatively hard find experts rare 0-RING SEAL CyliNDER C0MRESSI0N ADJUSliNG SCREW CYliNDER HEAD C0NTRA-PST0N COMBUSliON CHAMBER CONNECIiNG ROD ___0 CRANKSHFr So what secret behind little-known engine type Diethyl ether Ether bursts flame column air saturated ether rapidly compressed Glow plug engines use glowing coil platinum alloy ignite nitro/alcohol fuel mix Diesels time ignition point diethyl-ether/kerosene fuel charge controlling engines compression ratio As piston rises top stroke compresses heats trapped air/fuel mixture ether detonates start burning main power component kerosene Compression ratios much higher used glow engine improves thermal efficiency Kerosene has higher energy content per pound alcohol fuel economy enjoys second boost resulting roughly double run time per ounce fuel compared same power output glow engine As glow oil engine lubrication contained fuel combustion process model diesel differs automotive industrial diesel engines air compressed higher levels model engines oil sprayed combustion chamber fine mist moment combustion start hot compressed air starts burn fuel need chemical electric igniter process controlled injector timing amount pattern spray OK use glow plug get engine started quickly cold isnt like own dear platinum gems Back model diesel have chemical will flash Second contra-piston diesel head sets compression ether/kerosene fuel detonates just right time cycle CRANKCASE particular temperature engine temperature can controlled compression ratio structure achieve later gives us ability time firing engine precisely match needs fuel weather propeller running particular day tuning diesel engine set running glow engine can stop engine add remove head shims change fuels hope best diesel adjusted knowledgeable modeler can set run just right Diesel Built Look drawing can see usual crankshaft case cylinder pistonlrod cylinder head parts common model engines addition second stationary piston fits bore engine form upper surface combustion chamber new piston known contra-piston Compression ratio controlled screw lever adjusts clearance between contra-piston engines regular piston top stroke Diesels built much ruggedly glow engines because work higher pressures combustion phase Oddly temperatures tend below glow engines Because high pressures ball-bearing-supported crankshafts seem useful improve performance low speeds diesel glow engines needed high speed ranges Because larger-diameter props can used diesel morerugged crankshafts typical compared found other types engines much preferred prop break hard landing rather engine props later Setup Enough backgroundlets set up run diesel Specifically lets run PAW 35 Stunt Prop 11 x 5 engine still breaking As always really stout engine test stand mounted well off ground needed Keeping engine well off ground helps keep sucking dust its easier work As usual tank centerline should bit below needle valvein case 3/ inch Flooded diesels major pain clear out worst case can destroy engine because hydraulic lock between piston contra-piston can make very good case clamping fuel hose shut filling tank diesel-equipped model way dont use silicone natural rubber fuel hoses fuel will make grow get weaker need types compatible gasoline Use model diesel fuel engine Car industrial diesel February 1997 43 Glow conversion K&B 21 has Davis head ABC ball bearings rear exhaust Perry carb turns 10 x 6 authority standard 35 Dont Get Stuck just Old Glue Use Professional Grade JetTM Adhesives Carl Goldberg Models though know better some modelers still talk themselves using budget brand CA saying After CAs same anyhow arent Well fact CA glues created equal Oh sure basic CA chemistry related beyond its like thinking clunker Mercedes same because both have four wheels youre about invest lot blood sweat tears mention money model simply doesnt make sense hold whole works together CA glues cant offer kind security JetTM products can Consider JetTM Professional Grade CA sold company whos business designing producing model planes formulation quality control standards have developed specifically tough tests youll putting through Like high vibration levels exposure fuels stresses severe airloads Plus theyre manufactured packaged right USA can make sure high standards will maintained So whenever youre tempted try cheap CA just ask yourself youd really want risk building plane glue might nothing repackaged version stuff sell fixing broken teacups Try Well bet youll decide go Pros time CARL GOLDBERG MODELS INC 4734W Chicago Ave Chicago IL 60651 6-FLYING 626-9550 312626-9566 Carl Goldberg Models 1996 fuel wont run several fuel manufacturers have provided addresses end article Avoid electric starters want keep engine length time Initial Starting Most diesels shipped compression level set correctly start engine let us assume some dear friend started playing setting before ever got chance run engine trick first find compression setting work needle-valve setting simply begin process empty fuel tank brand-new diesel easiest remove muffler initial starts engine still factory setting use Otherwise before getting fuel near engine screw compression lever down until piston just hits contra-piston turn engine over very slowly Unscrew lever 1/2 full turns setting should way undercompressed safe way approach starting prop turned exhaust ports closed squirt some fuel exhaust port Immediately turn engine over twice holding firmly onto prop diesel always capable starting first try Never casually flip prop diesel Once prepared start flipping prop key flip prop fast can Use chicken stick highly recommended Electric starters recommended because will destroy engine instantly hydro-locked because excess prime Flip prop close compression lever tiny bit time until engine fires short burst After 20 flips youll want reprime Eventually engine will fire run out prime Play prime compression until can get run reliably cold-start compression setting Fill tank open needle valve its recommended starting setting particular PAW two turns open 44 Model Aviation C SER VICE AT ITS BEST AD5L Sales Service Anything Radio Controlled Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAEfor 1996 Meter conversions ACE Airtronics Aristo-craft Cirrus EK Catalog containing lists Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline R/C maintenance hints KoPropo Pro-Line RCD Tower Hobbies World Engines & others Discover MCard VISA COD Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm UPS USMAIL FEDEX etc KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 810-486-4800 Fax 810-486-1603 Carefully choke-prime engine finger over venturi want fuel just get needle valvenot engine point repeat starting routine should suddenly have running diesel Now comes fun part diesel especially brand-new dieseldoesnt like continue running starting setting Typically need tighten compression down until engine smooths out first run new engine tighten compression until engine smooths out back off until hear slight intermittent miss burp Let engine run way about five minutes basic wear-in mating parts Pinch off fuel hose stop engine let cool off completely Break-In After first run cooldown can begin lean engine out slowly readjust compression rpm slowly over several runs always ready reduce compression sounds though going overheat mode technique lean out engine tiny bit play compression until just running burp needle tweak compression again some point engine will suddenly stop running know have hit absolute limit Remember what setting about /s turn open will running needle setting Speed diesel controlled compression needle pretty much left alone caveat find opening needle aids starting Note running settings compression needle can just crank back soon engine running Break-in diesel long process partly because temperatures lower glow engine because extra-tight piston fit required maintain high compression runs about five minutes length full cool-down between required heat-cycle engine parts stabilize case 37 3850 4661 1/tx 24965 3/19x29074 1/4x26890 3/8x286119 1/2x23011042143 1/32 x 338 43 50 60 1/20 x 336 43 50 60 1/ltx336 44 50 60 3/32 x 343 52 91 67 1/8x352 93 73 84 3/19x392 76 84 181 1/4x378 94113138 5/19x3189152 3/8x3105115148170 1/2x3135150175285 3/4x3225310 1/32 x 459997992 1/20 x 459997992 1/19x459987992 3/32x49982199114 1/8s47993112134 3/19s487199140159 1/4x4189152192179 5/19x4182234 3/Ox 4195210239295 1/2 x 4249285315339 3/4x4350471 MATCHED SHEETS 42 48 3/32x4125 142 1/8x4150 199 3/19x4194 189 1/4x4179 295 BIRCH DOWELS /819 3/1917 1/429 5/1627 3/837 1/254 5/874 AILERONS36 48 1/4x157 82 1/4x1-1/465 98 1/4x1-1/274 105 1/4n280 115 5/ltxl-1/474 105 5/ltxl-1/275 106 5/19x289 120 3/8x1-1/480 115 3/8x1-1/283 116 3/8x295 135 1/2x1-1/295 148 1/2x2106 150 1/4x275 1/4x3109 3/8x290 3/8x3131 1/2x3154 ADO FOR SHAPEDoEAOOIG EDGE 2530 SPRUCE TRIANGLES 36 3/8x3/854 1/2x1/275 314x31400 1/lbs i/S 1/its 1/4 1/its 3/8 1/its 1/2 3/32 SO 3/32x1/4 3/3253/8 3/32x1/2 1/8 SQ 1/8x3/16 1/8x 1/4 1/tx 3/8 1/8x1/2 1/8x3/4 1/8n1 3/16 SQ 3/its 1/4 3/its 3/8 3/ltx 1/2 3/16x3/4 3/its 1 1/4 SQ 1/4n3/8 1/4x1/2 1/4x3/4 1/4s 1 5/16 SQ 3/8 SQ 3/8s1/2 3/8x3/4 3/8n1 1/2 SQ 1/2x3/4 1/2x1 5/8 SQ 3/4 SO 3/4x1 BUNDLE DEALS 201/19x3 203/32x3 151/8x3 15 3/its 3 101/4x3 103/Oxi 51/2s3 201/16x4 101/16x4 15l3/32x4 103/32x4 101/8x4 51/8x4 1 0 3/its 4 53/16u4 101/4x4 51/4s4 53/8x4 51/2n4 TRIANGLES 1/4 3/8 1/2 3/4 1-1/2 10 12 13 17 11 14 15 19 11 13 14 15 21 28 35 14 18 21 24 30 38 22 27 29 42 52 27 36 40 53 67 49 90 76 60 81 99 36 799 970 875 1050 875 1050 695 1235 1150 875 1000 1400 950 1300 21 23 27 36 45 23 27 29 36 45 59 30 33 41 50 78 35 45 57 88 86 64 82 104 86 111 132 48 900 1075 925 735 835 36 29 33 40 54 68 131 225 3648 78119 ixssa78119LIj 1/its 378119 3/32x393144 3/16x3132202 1/4x3157237 3/8s3180307I. 1/253238302 3/4x3375519 1s353271 1/32x4123188 1/20x4123188c# 1/16x4123188 3/32x4149232 1/8x4169262 3/its 4197300 1/4x4237332 3/8x4357563 1/254482688 4114-6/b wood Sub/ext availability SUPERIOR LITE1224 48 1/8x6250395 1/Ox 12395750 1/4x12495950 LITE PLY1224 48 1/8s6100125 235 1/8s12125235 450 1/4x6125175 340 1/4x12175345 650 3 PLY BIRCH 122448 1/64x6140275495 1/94x 12279510950 1/325695100325 1/32x12100335635 1/its 695180325 1/its 12180335625 1/8x695180335 1/8x12180335650 4 PLY BIRCH 122446 3/its 6 109 215 345 3/its 12215 345 685 5 PLY BIRCH 122448 3/32s6135260490 3/32s12260500895 1/8s6145280525 1/8x12280550950 1/4x6125250300 1/4x 12230380725 7 PLY BIRCH 122448 3/8x6 150 285 525 3/8s12 285 5501000 8PLYBIRCH 12 24 48 1/2n6200350 575 1/2x123505801125 HARD MAPLE 18 1/4s1/445 1/4s3/850 1/4x1/256 3/8x3/850 3/8x1/256 3/8x3/465 3/8n175 3/8n1-1/2115 1/2x1/275 78 5/Ox 3/485 3/4s3/492 SPRUCE/ BA553648 6B 1/itx 1/42430 3/32x1/42539 1/8 SQ2129 1/8x1/42836 1/8x3/83549 1/8x1/24155 1/8s3/44793 3/19 SQ2838 3/16s3/84053 3/ltsl/24894 3/19x3/4c9588 1/4 SQ4557 100 1/4s3/85399 1/4e1/26181138 1/4x3/418311101189 3/8 SOt485 138 1/2S0 85 105 180 1/2s3/4 94 125 200 ADE $500 EXT5A FOR PACKAGING GROOVED LG MOUNTS 3/8x3/41/850 3/8s3/45/3250 1/2u3/43/1t55 WING SKINS3B36 1/32n12479 535 1/20n12479 535 1/19s12479 535 3/32512579 945 TRAILING EDGES36 1/8x1/2 29 3/16n3/4 35 1/4x139 5/ltxl-1/450 3/8n1-1/259 1/2n290 EPOXY 4-12 OZ 9 OZ 5 Minute425669 15 Minute425669 30 Minute425699 2 Hour425699 20 Minute429840 INSTANT GLUE 1/2 no orGF185 1 GE300 2 oo Thin GF550 oz Thin GE1950 1/2 oz Extra Thick200 1 no totra thick330 2oo Extra Thick900 8oo Extra thick1800 ODORLESS FOR FOAM 1/2 no Thin GE425 1 oo Thin GE785 200 Thin orGE1385 2 oo Acceterutur315 8 no ACC tetill695 Ext tipo 6149 tnt tipo x tine 6149 SEND 61 OR COMPLETE CATALOO3 INFO & HELP 806-745-6394 ORDERS ONI 1-800-687-5555 24 HR FAX 806-745-6483 Coot 40 State Handling Charge $6St pay UPS Add $550 CIt SEN 1800 estra PP API FPI accept Visa MC Discover personal checksD MAILLONE STAR MODELS 1 CII 93/ % tas Tesas US currency Mm wood order IlSOC ORDERS TO Rt9 Box 437 Lubbock TX 79423 BULLY 12 LSI2 UAV has defied designers designed new head new port layout produce 12 LSI2 engine runs smooth silk fantastic verticals flawless transition easy throttle control using APC 16x14 Propeller two stroke low maintenance high performance engine enhanced pump regulator Compare engine engines now used paffern competition BULLY will out perform others smoothness pulling power reliability $ 39800$ 29800 UAIMV Inc PO Box 1548 Bend OR 97709 rax 541-385-0117 Call 800-294-9506 BULLY 12 PRI2 Bully 12 PR/2 next generation full race engine enhanced porting modified head pump produce engine will set standard sport race flying Bully 12 PRI2 natural evolution 12 PR no way replaces makes race engine user friendly two stroke low maintenance high performance engine will satisfy lust power stock full line accessories four muffler types designed engine rugged four point soft mount February 1997 45 Only $7995 Toll Free Order Line$60O S/H Continenul U S Send Cash Mones Order8004798851CA Residents Add 825% Sales Tax FLYING FORTRESS ENTERPRISES Huntington Drive Marino CA 91108 believe new EASY HINGES will have same type impact hobby last solution dreaded tedious boring jab hinging control surfaces No gouging picking make oversize slots wood No messy epoxies EASY HINGES easy install theyre guaranteed bring smile tace first time use PAW least hour break-in will needed through break-in friction will higher normal runs will tend bit unstable Never leave new diesel running bench being ready adjust needle compression Keep listening sound engine ready adjust compression higher goes burping sound lower sounds smooth strained cant describe well will easily hear character diesels sound getting harsh hard preignition compression too high no substitute just running running diesels get feel run Sorry Play compression needle change props play some Learn engine should sound very different glow enginesometimes exactly opposite what glow experience will tell key find optimum settings head needle goal run needle lean can compression low possible takes lot back-and-forth tweaking two controls 46 Model Aviation 0400 hours mission headed dee rmany engines crank pilot shouts turn ing huge Wright radials snap life props spin machine guns flash morning begins like no other highly detailed B-t7 replica features state-of-the-an aviator style quartz alarm clock authentic sound visual effects can triggered manually alarm function An impressive sight desk mantel night stand will thrill SIGHTS SOUNDS historic warbird symbol Americas might As break-in proceeds engine runs reasonably steadily switch propeller expect use flying PAW will now lug 11 x 7 very nicely 8400 rpm may have experiment find new starting settings timing will have changed depending different size initial prop Typically smaller props require compression larger ones less Another good thing know starting setting cold engine slightly higher compression running setting hot engine slightly lower Shutdown Storage diesel shut engine down pinching fuel hosenever flood off As engine after running clear out much fuel possible running dry last run day stop engine running full speed removing fuel hose engine has stopped its own prime fire up fuel hose detached completely SUITABLE FOR ALL MODELS 112A thru GIANT SIZE history modeling few products truly revolutionary example proportional radios iron-on coverings CA glues permanently changed way build fly models thus qualify revolutionary S14-71 0 Package 24 $325 TSI Engines come Aluminum Chrome polished spinner classy Redhead highly polished aluminum spin ner TigerShark engines being admired enjoyed model ers world-wide selection covers popular sizes 40 46 75 91 110 engine utilizes proven ABC design TigerShark engine comes complete Glow Plug Muffler polished Aluminum Spinner 2 year warranty! Look TigerShark engines dealer today SC international RO Box 40116 indianapolis Indiana 46280 1-317-844-1978 http//wwwiquestnet/isc North West Model Distribution 21527 NE 227th Battie Ground WA 98604 1 -360-687-9452 High Performance rubber band powered models setting standard rubber band powered fun Check local hobby toy store find entire line Funcraft Planes Funcraft Planes Boynton Beach Florida clear out crankcase needle assembly After-run oil isnt usually necessary diesel unless going store engine very long time alcohol glow engine fuel attracts moisture components diesel fuel hygroscopic proviso though very important store engine exhaust ports open lets last fuel residues evaporate rather leaving attack metal surfaces some acids formed seems Wrap engine porous rag tissuenever plastic bag Let air unless perhaps live tropics closed container silica gel desiccant good tdea Available Engines Now have chance get familiar concept techniques diesels lets take look what available current collection runs 035 cubic inches PAW 55 DC Dart engines up PAW 35 single Ball Race Stunt engine nowhere near range sizes available Small diesels range down 006 cubic inches 1cc Big diesels run up about 60 10cc can get up monster engines 36 class using largest Davis conversion heads As glow engines little engines lot touchy big ones especially because difficulty clearing out flooded conditions recommend least 09 15cc size engine first diesel Because FAI competition largest assortment diesels available 15 25cc range list sources diesel engines provided end article Diesel Engines vs Converted Glow Engines Regarding relative merits designed-as-a-diesel engine vs glow engine converted diesel have consider several things opinion ideal diesel engine conceived designed purpose However very large however engine want may exist Glow engines available much 48 Model Aviation er band powered Warbird series featuring replicas greatest fighters history I11 quality rubber band powered MODELER COMPLETELINEGFEXIIAUSTSYSTEMS Tuned PipesHelicopter Systems Muffled Tuned Pipes4-Cycle Quiet Muffler Quiet Pipes Systems Marine PipesHeloballs WizardsExhaust Accessories HeadersEngine Accessories CHECK WITH YOUR DEALER TODAY 7935 Carlton Rd amento tornia 95828 916456-6932 918 456-7414 FAX Have fun good luck y Renger 13182 Sutton St Cerritos CA 90703 Sources Aerodyne Models 1924 East Edinger Santa Ana CA 92705 714 258-0805 Engines fuel other kits & goodies Altech Marketing 908 225-6144 Engines Carison Engine Imports 814 East Marconi Ave Phoenix AZ 85022 602 863-1684 Engines fuel accessories Eric Clutton 913 Cedar Ln Tullahoma TN 37388 615 455-2256 Engines fuel excellent book diesels Davis Model Products Box 141 Milford CT 06460 203 877-1670 Diesel conversion heads fuel FHS Supply Inc Box9 239 Bethel Church Road Clover SC 29710 800 742-8484 Red Mar fuels RIL Industries USA Box 5 Sierra Madre CA 91025 818 359-0016 Engines diesel conversion heads February 1997 51 E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available P-38 P-51 Brochure $100 SASE Flight Line Toys ox 3484 Springfield MO 65808 SYNE~mu A

Diesel Model Engines D Larry Renger 1 article aimed modeler comfortable starting running flying glowplug-ignited enginesthe standard type used United States intent familiarize uses running care model diesel engines Although vast majority modelers United States fly glow engines some interesting alternatives most-advertised alternative engine technology four-stroke engine followed diesel finally now turbine technology choose depends what planning Turbines speak themselves jets have money expertise desire alternative Four-stroke engines well documented available everywhere very quiet economical fuel swing very large props Diesels will never replace other types engines have place modeling used correct manner cannot matched anything else available Diesels very good swinging huge props example Mills 045 will haul nine-inchdiameter prop no problem much output power mode engine will run very happily no difficulty setting other end scale Team Racers always run diesel engines get 100 mph ds remarkable economy combined one-flip starts concept need deal early idea raw power generated glow engine may conveniently translated massive propeller thrust glow engine loves rev diesel massive torque machine Torque can drive big props Big props very efficient compared small props diesel can right application pull airplane similar size glow engine would fly average modeler diesel perfect engine models need real pulling power Scale RC CL Stunt Old-Timer Free Flight fair game ability diesel lug big prop strain proper gear 40 Model Aviation diesels I-r 35 06 049 55 035 Single-bail-bearIng crankshaft 3800 portIng mild timing long stroke Original Mills 045 DC Dart 035 Cub 049 McCoy 049 can get grab run well Left Front l-r PAW 049 br Mills 045 PAW 55 br 035 DC Dart 035 Rear PAW 35 br Silver Swallow 15 0S Max 10 FP Davis head Center Chinese Silver Swallow 15 r 3600 portIng exhaust crankshaft rotary tIming plain bearings Schnuerle-ported Russian MAP 15 left Bottom PAW 35 sIngle-ballbearing engine breaking Turns up 13-inch prop cranked 11 x 7 Zlnger 8400 rpm selection helicopters RC cars also benefit torque capability diesel power key diesel puts out raw power just huge torque capability lets use big props high gear ratios very efficiently net result can greatly improved performance Comparison applications require swinging large prop maximize thrust fourstroke engines diesels have advantages over typical glow engines Both types much economical fuel usage much quieter glow engine also certain amount interest both engine types simply because technically possible work well Now select between two types suspect although four-stroke engine gets attention advertising modelers have diesels own four-strokes Good workable diesel engines have steady production throughout world since before invention glow plug Until recenfly diesels popular outside US glow engines because fuel components easier get intro/alcohol mix use Workable production four-stroke engines relatively recent development modeldom Factors favor four-stroke ease starting running adjustment latest designs low percentage oil required four-stroke fuel helps keep models very clean compared either glow diesel However power-to-weight ratio four-stroke lowest three types Four-stroke engines expensive complex fragile compared glow engines diesels size four-stroke engine needs about double capacity glow engine given model comparison diesel typically specified size smaller equivalent glow engine example 19 diesel will fly 35 CL Stunt model Diesel model engines built like tanks February 1997 41 incredibly durable diesel will tune easily run essentially size prop modification possible run 16-inch prop 35 produce usable power damage engine power output may ideal sometimes ability swing huge prop rpm need Glow engines generally need designed around particular rpm range happy turning other-size propellers Excess wear unsteady settings overheating usually results several other advantages diesels fuel economy welldesigned diesel about twice good glow engine glow plug required cant burn out starting batteries unnecessary diesel cant flame out because fuel drop hit glow element Battery booster systems idle completely unneeded too Diesels can incredibly small because dont need accommodate glow plug element head head design can optimized burning fuel extra cavity glow coil disturbing flow negative side diesels use funnysmelling greasy fuel hard start because require adjustment two major tuning devices instead Diesels relatively hard find experts rare 0-RING SEAL CyliNDER C0MRESSI0N ADJUSliNG SCREW CYliNDER HEAD C0NTRA-PST0N COMBUSliON CHAMBER CONNECIiNG ROD ___0 CRANKSHFr So what secret behind little-known engine type Diethyl ether Ether bursts flame column air saturated ether rapidly compressed Glow plug engines use glowing coil platinum alloy ignite nitro/alcohol fuel mix Diesels time ignition point diethyl-ether/kerosene fuel charge controlling engines compression ratio As piston rises top stroke compresses heats trapped air/fuel mixture ether detonates start burning main power component kerosene Compression ratios much higher used glow engine improves thermal efficiency Kerosene has higher energy content per pound alcohol fuel economy enjoys second boost resulting roughly double run time per ounce fuel compared same power output glow engine As glow oil engine lubrication contained fuel combustion process model diesel differs automotive industrial diesel engines air compressed higher levels model engines oil sprayed combustion chamber fine mist moment combustion start hot compressed air starts burn fuel need chemical electric igniter process controlled injector timing amount pattern spray OK use glow plug get engine started quickly cold isnt like own dear platinum gems Back model diesel have chemical will flash Second contra-piston diesel head sets compression ether/kerosene fuel detonates just right time cycle CRANKCASE particular temperature engine temperature can controlled compression ratio structure achieve later gives us ability time firing engine precisely match needs fuel weather propeller running particular day tuning diesel engine set running glow engine can stop engine add remove head shims change fuels hope best diesel adjusted knowledgeable modeler can set run just right Diesel Built Look drawing can see usual crankshaft case cylinder pistonlrod cylinder head parts common model engines addition second stationary piston fits bore engine form upper surface combustion chamber new piston known contra-piston Compression ratio controlled screw lever adjusts clearance between contra-piston engines regular piston top stroke Diesels built much ruggedly glow engines because work higher pressures combustion phase Oddly temperatures tend below glow engines Because high pressures ball-bearing-supported crankshafts seem useful improve performance low speeds diesel glow engines needed high speed ranges Because larger-diameter props can used diesel morerugged crankshafts typical compared found other types engines much preferred prop break hard landing rather engine props later Setup Enough backgroundlets set up run diesel Specifically lets run PAW 35 Stunt Prop 11 x 5 engine still breaking As always really stout engine test stand mounted well off ground needed Keeping engine well off ground helps keep sucking dust its easier work As usual tank centerline should bit below needle valvein case 3/ inch Flooded diesels major pain clear out worst case can destroy engine because hydraulic lock between piston contra-piston can make very good case clamping fuel hose shut filling tank diesel-equipped model way dont use silicone natural rubber fuel hoses fuel will make grow get weaker need types compatible gasoline Use model diesel fuel engine Car industrial diesel February 1997 43 Glow conversion K&B 21 has Davis head ABC ball bearings rear exhaust Perry carb turns 10 x 6 authority standard 35 Dont Get Stuck just Old Glue Use Professional Grade JetTM Adhesives Carl Goldberg Models though know better some modelers still talk themselves using budget brand CA saying After CAs same anyhow arent Well fact CA glues created equal Oh sure basic CA chemistry related beyond its like thinking clunker Mercedes same because both have four wheels youre about invest lot blood sweat tears mention money model simply doesnt make sense hold whole works together CA glues cant offer kind security JetTM products can Consider JetTM Professional Grade CA sold company whos business designing producing model planes formulation quality control standards have developed specifically tough tests youll putting through Like high vibration levels exposure fuels stresses severe airloads Plus theyre manufactured packaged right USA can make sure high standards will maintained So whenever youre tempted try cheap CA just ask yourself youd really want risk building plane glue might nothing repackaged version stuff sell fixing broken teacups Try Well bet youll decide go Pros time CARL GOLDBERG MODELS INC 4734W Chicago Ave Chicago IL 60651 6-FLYING 626-9550 312626-9566 Carl Goldberg Models 1996 fuel wont run several fuel manufacturers have provided addresses end article Avoid electric starters want keep engine length time Initial Starting Most diesels shipped compression level set correctly start engine let us assume some dear friend started playing setting before ever got chance run engine trick first find compression setting work needle-valve setting simply begin process empty fuel tank brand-new diesel easiest remove muffler initial starts engine still factory setting use Otherwise before getting fuel near engine screw compression lever down until piston just hits contra-piston turn engine over very slowly Unscrew lever 1/2 full turns setting should way undercompressed safe way approach starting prop turned exhaust ports closed squirt some fuel exhaust port Immediately turn engine over twice holding firmly onto prop diesel always capable starting first try Never casually flip prop diesel Once prepared start flipping prop key flip prop fast can Use chicken stick highly recommended Electric starters recommended because will destroy engine instantly hydro-locked because excess prime Flip prop close compression lever tiny bit time until engine fires short burst After 20 flips youll want reprime Eventually engine will fire run out prime Play prime compression until can get run reliably cold-start compression setting Fill tank open needle valve its recommended starting setting particular PAW two turns open 44 Model Aviation C SER VICE AT ITS BEST AD5L Sales Service Anything Radio Controlled Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAEfor 1996 Meter conversions ACE Airtronics Aristo-craft Cirrus EK Catalog containing lists Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline R/C maintenance hints KoPropo Pro-Line RCD Tower Hobbies World Engines & others Discover MCard VISA COD Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm UPS USMAIL FEDEX etc KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 810-486-4800 Fax 810-486-1603 Carefully choke-prime engine finger over venturi want fuel just get needle valvenot engine point repeat starting routine should suddenly have running diesel Now comes fun part diesel especially brand-new dieseldoesnt like continue running starting setting Typically need tighten compression down until engine smooths out first run new engine tighten compression until engine smooths out back off until hear slight intermittent miss burp Let engine run way about five minutes basic wear-in mating parts Pinch off fuel hose stop engine let cool off completely Break-In After first run cooldown can begin lean engine out slowly readjust compression rpm slowly over several runs always ready reduce compression sounds though going overheat mode technique lean out engine tiny bit play compression until just running burp needle tweak compression again some point engine will suddenly stop running know have hit absolute limit Remember what setting about /s turn open will running needle setting Speed diesel controlled compression needle pretty much left alone caveat find opening needle aids starting Note running settings compression needle can just crank back soon engine running Break-in diesel long process partly because temperatures lower glow engine because extra-tight piston fit required maintain high compression runs about five minutes length full cool-down between required heat-cycle engine parts stabilize case 37 3850 4661 1/tx 24965 3/19x29074 1/4x26890 3/8x286119 1/2x23011042143 1/32 x 338 43 50 60 1/20 x 336 43 50 60 1/ltx336 44 50 60 3/32 x 343 52 91 67 1/8x352 93 73 84 3/19x392 76 84 181 1/4x378 94113138 5/19x3189152 3/8x3105115148170 1/2x3135150175285 3/4x3225310 1/32 x 459997992 1/20 x 459997992 1/19x459987992 3/32x49982199114 1/8s47993112134 3/19s487199140159 1/4x4189152192179 5/19x4182234 3/Ox 4195210239295 1/2 x 4249285315339 3/4x4350471 MATCHED SHEETS 42 48 3/32x4125 142 1/8x4150 199 3/19x4194 189 1/4x4179 295 BIRCH DOWELS /819 3/1917 1/429 5/1627 3/837 1/254 5/874 AILERONS36 48 1/4x157 82 1/4x1-1/465 98 1/4x1-1/274 105 1/4n280 115 5/ltxl-1/474 105 5/ltxl-1/275 106 5/19x289 120 3/8x1-1/480 115 3/8x1-1/283 116 3/8x295 135 1/2x1-1/295 148 1/2x2106 150 1/4x275 1/4x3109 3/8x290 3/8x3131 1/2x3154 ADO FOR SHAPEDoEAOOIG EDGE 2530 SPRUCE TRIANGLES 36 3/8x3/854 1/2x1/275 314x31400 1/lbs i/S 1/its 1/4 1/its 3/8 1/its 1/2 3/32 SO 3/32x1/4 3/3253/8 3/32x1/2 1/8 SQ 1/8x3/16 1/8x 1/4 1/tx 3/8 1/8x1/2 1/8x3/4 1/8n1 3/16 SQ 3/its 1/4 3/its 3/8 3/ltx 1/2 3/16x3/4 3/its 1 1/4 SQ 1/4n3/8 1/4x1/2 1/4x3/4 1/4s 1 5/16 SQ 3/8 SQ 3/8s1/2 3/8x3/4 3/8n1 1/2 SQ 1/2x3/4 1/2x1 5/8 SQ 3/4 SO 3/4x1 BUNDLE DEALS 201/19x3 203/32x3 151/8x3 15 3/its 3 101/4x3 103/Oxi 51/2s3 201/16x4 101/16x4 15l3/32x4 103/32x4 101/8x4 51/8x4 1 0 3/its 4 53/16u4 101/4x4 51/4s4 53/8x4 51/2n4 TRIANGLES 1/4 3/8 1/2 3/4 1-1/2 10 12 13 17 11 14 15 19 11 13 14 15 21 28 35 14 18 21 24 30 38 22 27 29 42 52 27 36 40 53 67 49 90 76 60 81 99 36 799 970 875 1050 875 1050 695 1235 1150 875 1000 1400 950 1300 21 23 27 36 45 23 27 29 36 45 59 30 33 41 50 78 35 45 57 88 86 64 82 104 86 111 132 48 900 1075 925 735 835 36 29 33 40 54 68 131 225 3648 78119 ixssa78119LIj 1/its 378119 3/32x393144 3/16x3132202 1/4x3157237 3/8s3180307I. 1/253238302 3/4x3375519 1s353271 1/32x4123188 1/20x4123188c# 1/16x4123188 3/32x4149232 1/8x4169262 3/its 4197300 1/4x4237332 3/8x4357563 1/254482688 4114-6/b wood Sub/ext availability SUPERIOR LITE1224 48 1/8x6250395 1/Ox 12395750 1/4x12495950 LITE PLY1224 48 1/8s6100125 235 1/8s12125235 450 1/4x6125175 340 1/4x12175345 650 3 PLY BIRCH 122448 1/64x6140275495 1/94x 12279510950 1/325695100325 1/32x12100335635 1/its 695180325 1/its 12180335625 1/8x695180335 1/8x12180335650 4 PLY BIRCH 122446 3/its 6 109 215 345 3/its 12215 345 685 5 PLY BIRCH 122448 3/32s6135260490 3/32s12260500895 1/8s6145280525 1/8x12280550950 1/4x6125250300 1/4x 12230380725 7 PLY BIRCH 122448 3/8x6 150 285 525 3/8s12 285 5501000 8PLYBIRCH 12 24 48 1/2n6200350 575 1/2x123505801125 HARD MAPLE 18 1/4s1/445 1/4s3/850 1/4x1/256 3/8x3/850 3/8x1/256 3/8x3/465 3/8n175 3/8n1-1/2115 1/2x1/275 78 5/Ox 3/485 3/4s3/492 SPRUCE/ BA553648 6B 1/itx 1/42430 3/32x1/42539 1/8 SQ2129 1/8x1/42836 1/8x3/83549 1/8x1/24155 1/8s3/44793 3/19 SQ2838 3/16s3/84053 3/ltsl/24894 3/19x3/4c9588 1/4 SQ4557 100 1/4s3/85399 1/4e1/26181138 1/4x3/418311101189 3/8 SOt485 138 1/2S0 85 105 180 1/2s3/4 94 125 200 ADE $500 EXT5A FOR PACKAGING GROOVED LG MOUNTS 3/8x3/41/850 3/8s3/45/3250 1/2u3/43/1t55 WING SKINS3B36 1/32n12479 535 1/20n12479 535 1/19s12479 535 3/32512579 945 TRAILING EDGES36 1/8x1/2 29 3/16n3/4 35 1/4x139 5/ltxl-1/450 3/8n1-1/259 1/2n290 EPOXY 4-12 OZ 9 OZ 5 Minute425669 15 Minute425669 30 Minute425699 2 Hour425699 20 Minute429840 INSTANT GLUE 1/2 no orGF185 1 GE300 2 oo Thin GF550 oz Thin GE1950 1/2 oz Extra Thick200 1 no totra thick330 2oo Extra Thick900 8oo Extra thick1800 ODORLESS FOR FOAM 1/2 no Thin GE425 1 oo Thin GE785 200 Thin orGE1385 2 oo Acceterutur315 8 no ACC tetill695 Ext tipo 6149 tnt tipo x tine 6149 SEND 61 OR COMPLETE CATALOO3 INFO & HELP 806-745-6394 ORDERS ONI 1-800-687-5555 24 HR FAX 806-745-6483 Coot 40 State Handling Charge $6St pay UPS Add $550 CIt SEN 1800 estra PP API FPI accept Visa MC Discover personal checksD MAILLONE STAR MODELS 1 CII 93/ % tas Tesas US currency Mm wood order IlSOC ORDERS TO Rt9 Box 437 Lubbock TX 79423 BULLY 12 LSI2 UAV has defied designers designed new head new port layout produce 12 LSI2 engine runs smooth silk fantastic verticals flawless transition easy throttle control using APC 16x14 Propeller two stroke low maintenance high performance engine enhanced pump regulator Compare engine engines now used paffern competition BULLY will out perform others smoothness pulling power reliability $ 39800$ 29800 UAIMV Inc PO Box 1548 Bend OR 97709 rax 541-385-0117 Call 800-294-9506 BULLY 12 PRI2 Bully 12 PR/2 next generation full race engine enhanced porting modified head pump produce engine will set standard sport race flying Bully 12 PRI2 natural evolution 12 PR no way replaces makes race engine user friendly two stroke low maintenance high performance engine will satisfy lust power stock full line accessories four muffler types designed engine rugged four point soft mount February 1997 45 Only $7995 Toll Free Order Line$60O S/H Continenul U S Send Cash Mones Order8004798851CA Residents Add 825% Sales Tax FLYING FORTRESS ENTERPRISES Huntington Drive Marino CA 91108 believe new EASY HINGES will have same type impact hobby last solution dreaded tedious boring jab hinging control surfaces No gouging picking make oversize slots wood No messy epoxies EASY HINGES easy install theyre guaranteed bring smile tace first time use PAW least hour break-in will needed through break-in friction will higher normal runs will tend bit unstable Never leave new diesel running bench being ready adjust needle compression Keep listening sound engine ready adjust compression higher goes burping sound lower sounds smooth strained cant describe well will easily hear character diesels sound getting harsh hard preignition compression too high no substitute just running running diesels get feel run Sorry Play compression needle change props play some Learn engine should sound very different glow enginesometimes exactly opposite what glow experience will tell key find optimum settings head needle goal run needle lean can compression low possible takes lot back-and-forth tweaking two controls 46 Model Aviation 0400 hours mission headed dee rmany engines crank pilot shouts turn ing huge Wright radials snap life props spin machine guns flash morning begins like no other highly detailed B-t7 replica features state-of-the-an aviator style quartz alarm clock authentic sound visual effects can triggered manually alarm function An impressive sight desk mantel night stand will thrill SIGHTS SOUNDS historic warbird symbol Americas might As break-in proceeds engine runs reasonably steadily switch propeller expect use flying PAW will now lug 11 x 7 very nicely 8400 rpm may have experiment find new starting settings timing will have changed depending different size initial prop Typically smaller props require compression larger ones less Another good thing know starting setting cold engine slightly higher compression running setting hot engine slightly lower Shutdown Storage diesel shut engine down pinching fuel hosenever flood off As engine after running clear out much fuel possible running dry last run day stop engine running full speed removing fuel hose engine has stopped its own prime fire up fuel hose detached completely SUITABLE FOR ALL MODELS 112A thru GIANT SIZE history modeling few products truly revolutionary example proportional radios iron-on coverings CA glues permanently changed way build fly models thus qualify revolutionary S14-71 0 Package 24 $325 TSI Engines come Aluminum Chrome polished spinner classy Redhead highly polished aluminum spin ner TigerShark engines being admired enjoyed model ers world-wide selection covers popular sizes 40 46 75 91 110 engine utilizes proven ABC design TigerShark engine comes complete Glow Plug Muffler polished Aluminum Spinner 2 year warranty! Look TigerShark engines dealer today SC international RO Box 40116 indianapolis Indiana 46280 1-317-844-1978 http//wwwiquestnet/isc North West Model Distribution 21527 NE 227th Battie Ground WA 98604 1 -360-687-9452 High Performance rubber band powered models setting standard rubber band powered fun Check local hobby toy store find entire line Funcraft Planes Funcraft Planes Boynton Beach Florida clear out crankcase needle assembly After-run oil isnt usually necessary diesel unless going store engine very long time alcohol glow engine fuel attracts moisture components diesel fuel hygroscopic proviso though very important store engine exhaust ports open lets last fuel residues evaporate rather leaving attack metal surfaces some acids formed seems Wrap engine porous rag tissuenever plastic bag Let air unless perhaps live tropics closed container silica gel desiccant good tdea Available Engines Now have chance get familiar concept techniques diesels lets take look what available current collection runs 035 cubic inches PAW 55 DC Dart engines up PAW 35 single Ball Race Stunt engine nowhere near range sizes available Small diesels range down 006 cubic inches 1cc Big diesels run up about 60 10cc can get up monster engines 36 class using largest Davis conversion heads As glow engines little engines lot touchy big ones especially because difficulty clearing out flooded conditions recommend least 09 15cc size engine first diesel Because FAI competition largest assortment diesels available 15 25cc range list sources diesel engines provided end article Diesel Engines vs Converted Glow Engines Regarding relative merits designed-as-a-diesel engine vs glow engine converted diesel have consider several things opinion ideal diesel engine conceived designed purpose However very large however engine want may exist Glow engines available much 48 Model Aviation er band powered Warbird series featuring replicas greatest fighters history I11 quality rubber band powered MODELER COMPLETELINEGFEXIIAUSTSYSTEMS Tuned PipesHelicopter Systems Muffled Tuned Pipes4-Cycle Quiet Muffler Quiet Pipes Systems Marine PipesHeloballs WizardsExhaust Accessories HeadersEngine Accessories CHECK WITH YOUR DEALER TODAY 7935 Carlton Rd amento tornia 95828 916456-6932 918 456-7414 FAX Have fun good luck y Renger 13182 Sutton St Cerritos CA 90703 Sources Aerodyne Models 1924 East Edinger Santa Ana CA 92705 714 258-0805 Engines fuel other kits & goodies Altech Marketing 908 225-6144 Engines Carison Engine Imports 814 East Marconi Ave Phoenix AZ 85022 602 863-1684 Engines fuel accessories Eric Clutton 913 Cedar Ln Tullahoma TN 37388 615 455-2256 Engines fuel excellent book diesels Davis Model Products Box 141 Milford CT 06460 203 877-1670 Diesel conversion heads fuel FHS Supply Inc Box9 239 Bethel Church Road Clover SC 29710 800 742-8484 Red Mar fuels RIL Industries USA Box 5 Sierra Madre CA 91025 818 359-0016 Engines diesel conversion heads February 1997 51 E-Z BILT WWII Pedal Planes will have much fun building 3-6 year old will have flying Kit includes full size patterns complete instructions color photo list ready made parts included Kits $2000 total Specify plan wanted Kits available P-38 P-51 Brochure $100 SASE Flight Line Toys ox 3484 Springfield MO 65808 SYNE~mu A