CONTROL LINE AEROBATICS Ed t THIS IS truly exciting time precision aerobatics Ive sitting pit read hobby room reflecting column last hour Naturally ideas come letters phone calls special interest publications catalogs As Ive said before new items services hobby has become easier enjoyable pursue Last month mentioned some services worlds premier engine men offers Before let George [Ed George Aldrich Aldrich Models] describe what offers several projects working could great interest us first US-made limitedproduction tuned pipe 40 second motor fills real needa plain-bearing loop-scavenged 40 made Russia Right now limited number suitable motors available tuned-pipe stunt operation OS 46 VF OPS 4OSPP possibly SuperTigre 51 Thats well aware manufacturers tend either change discontinue motors timed stunt Also motors currently best US motors availability can change quicklywitness OS 40 VF George now working Willie Wylie develop rear-exhaust frontintake lightweight possibly under nine ounces ABC 40 timed stunt Castings being produced prototype should flying time read Dont expect actual production engines however until have tested correct youre interested drop George line current information other motor about same stage has broader application tuned-pipe motor Since demise 05 35S McCoy 40 etc havent good powerful utility motor would run well out box purposes George has supplied timing numbers general arrangements appropriate manufacturing agreements can set up could see really attractive moderately priced motor everyone can run Georges story work done though going use project myself reason work waythe best can remains fact engines have reworked never realized potential because desire find what secret tricks performed customer took apart before running [Then] customer thinks hes cheated cant put back together properly Let make clear forte fitting engine properly will never find lot polishing feel detrimental engine performance anything rough up bead blast certain areas form wetted surface gases model two-cycles moving fast polished surface runs hotter lets fuel charge slide too fast piston two-cycles valve moves past port quickly difficult get fuel charge cylinder theory has assist stored charge waiting get port opens Chrome-plating parts keeping same tolerance will result overheating loss power takes critical honing lapping tolerance control produce same power before chrome plating What get chrome-plated cylinder done properly renewed longer engine life important know piston position cylinder top stroke TDC customer cannot measure assures better setup engine sent out chrome work desired steps follows 1 Lap piston perfectly round 2 Hone cylinder round least 003 oversize assure over 001 chrome wall 3 Chrome-plate cylinder 0005 undersize piston 0002 oversize 4 Hone cylinder perfect fit relap chromed piston perfect roundness hone cylinder running fit Regardless carefully chromedsteel cylinder setup done takes longer reach full power ABC setups fit much tighter because brass cylinder expands piston alarmed loud squeaks squawks turning ABC/AAC engine through TDC As runs some noise will disappear try run-in ABC keeping slobbering rich tad rich side five minutes fine addition full chrome re chromed service special heat treating fitting cast iron piston/steel cylinder engines broadening technique worked out Rossi 15 back 70sand engines still running strong today What can offer now ability restore worn cylinder assemblies cast iron pistons least as-good-as-new compression Additional benefits include longer life due piston hardening Continued page 85 August 1993 83 Bill Noyes 1714 Mt Marty Dr CA 91789 markets series adjustable handles Range adjustments expert level Bill proud new 62-inch-span foam-wing Apache ST 60 power Frank McMillans latest Super Caudron OPS 40 tuned-pipe version has 63-inch wingspan 750-square-inch wing area Bill Ervins 52-inch-wingspan practice ship Cotton Candy powered Dixon SuperTigre 34 should r performer relatively easy offers strong installation well very good carburetor both performance ease adjustment Bills solution use sleeve over exterior Fox intake 1/2-inch inside dimension square tube exactly right job finding such tube could challenging Bill solved problem using technique borrowed stolen George Fogerty Almost good hardware store can supply copper pipe couplings 5/s-inch inside diameter straight coupling about inch long Converting round coupling square sleeve can accomplished piece 1/2-inch-square steel bar stock same store Georges method involves filing taper end steel bar applying liberal amount grease hammering coupling working progressively regreasing rod prevent sticking After shaping coupling should heated red heat allowed cool slowly relieve internal stresses caused forming process Bill cut off intake Combat Special just above lower spray bar holes Because crankshaft short carburetor must fit relatively low intake avoid interfering propeller raised areas around holes need ground down until flush sides intake Bill sawed through web front back sides intake allow sleeve fit over intake form good seal base sleeve should also shaped fit round contour crankcase base intake metal-filled epoxy used glue sleeve over intake both strength effective seal Clean parts thoroughly before assembly sure remove excess epoxy inside sleeve carburetor will mounted before epoxy hardens completely Cut off sleeve carburetor will just rest top original intake drill mounting holes sleeve appropriate point Metal-filled epoxy also used form seat carburetor Grease carburetor base screws stuff base carburetor tissue apply epoxy inside corners sleeve insert carburetor invert assembly excess epoxy will stay can get install screws secure carburetor After epoxy completely cured remove carburetor clean up excess epoxy Magnum Pro 36 engine Magnum Pro 36 RC mentioned April column good Profile Carrier candidate said engine priced right good qualityat least far physical appearance apparent parts fit concerned Unfortunately has critical faultit isnt 36 its 37 design displacement engine 365 cubic inches bore 208mm 819 inchesactually measured 820 inches stroke 176mm 693 inches oversize 14 percent seems common affliction among engines designed bigger competitors engine intended displacement-limited competi tion class SuperTigre Xli displaces 113 cubic inches OS. 12 really 13 Webra 32 displaces 323 cubic inches tendency appears to err small side representing engine can outperform accurately described competitors engines same advertised displacement must carefully check actual displacement referring specifications provided engineeasy enough local hobby shop mail no readily apparent parts swaps reduce displacement weight other attributes Magnum Pro 36 engine would seem make very good candidate AMA events requiring 3600 cubic inch maximum displacement size reduced fit rules Dont give up yet 4CL Aerobatics/McMiIIan Continued page 83 salvaging some cylinders become unusable can process applied production engines new used engines everything free flight control line radio control conjunction cylinder-port modification will offered give steadier engine run aerobatics events either unpiped piped todays Schnuerle-ported engines give strong four-cycle four-two break desirable stunt engine Most engines can easily retimed meet criterion Naturally have keen interest stunt engines constantly check various new engines see meet standards require Back late 1960s basic fitting ABC setup developed shop Needless say techniques have lost have developed some new better things along way Critical top performance total stability aluminum piston ABC setup special heat treatment produces setup totally stable requiring no relapping stoning after has run past few years modeling interests have centered childhood beginningsie Old-Timer Free Flight CL Stunt pure ignition engine running old gas n oil fuel Over past years Ive spent quite bit time testing retrofitting retesting various ignition engines like Super Cyclone Anderson Spitfire Orwick O&R etc leaving engines original plan form increased performance retrofitting has gratifying Ohlsson & Rice engines because cylinder permanently attached THE LEADER IN COMPETITION NEW NEW THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66A778 677 7 / 8 67 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFGOFSELECTHARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 833/,4568 845B6/27 9456677 1045667 106W8W 106EW 114677/778 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 August1993 85 Tr PROPELLERS CYCLE SERIES 100 p / jo -s RC PYLON RACING SERIES 500 DIAPITCH 7SN 5N 8/677/8 SERIES 400C 9777 W WIDE BLADE EW EXTRA WIDE N NARROW case difficult Under develop ment now method restoring rod wrist pin piston fit engines can put use Also under extensive test have various lubricants gasoline fuel/ignition operation am now convinced reason old engines 1930s 40s still really excellent condition 70 SAE oil always felt castor oil king came carrying heavy load tests have seen engines would over heat 25% castor oil after 30 seconds run out whole tank full power 25% 70-weight oil old thick lubenot new thinner racing nitro 70 ABC AAC cylinder assemblies SuperTigre 46 60 being used over world now probably will just offer ABC setup now fragile Contact George Aldrich Models 12822 Tarrytown San Antonio TX 78233 Tel 210 656-2021 will disappointed Another old friend Jim Hunt once again producing specialty items control line Some years agowhen much youngerJim produced several items recognized strongly time son Bob used adjustable handle win Nationals World Championship addition Jim produced simple durable stooge have using 18 years Jim has working recently product line includes time-proven items some new additions Strong Arm control system included horns -inch wire unique dural posts secure bushing support bellcrank configurations up four inches like bellcranks particular made 3/16-inch linen phenolic provided -inch brass bushing adequate support Other items include custom-made aluminum radial mounts stunt applications well-known landing gear setups foam wing applications wellengineered proven quality products Contact Jim 208 E Center St Box 68 Stockertown PA 18083 Tel 215 746-0106 times past columns Ive men tioned Windy Urtnowskis Pro-Stunt Products Windy continually giving himself improve event Some years ago started producing construction videos built various planes ground up early tapes include Nobler early piped ship very informativeincluding tips construction painting As produced tapes quality information improved expanded significantly 93 season new shop series details construction Windys Tweener ships Im hooked tapes fun watch real crafts man craftsperson politically correct work As bonus tape includes still photos pastin series 14 series starts basic foam wing techniques details Windy works through assembly wing including installing landing gear clips work wing tips addresses tip box leadouts contains solid dependable information real interest running commentary Windy contains veritable flood handy tips concepts weight manage ment whereby builder tracks component weight such wing skins uses lightest parts inboard wing obvious important sounds simple surface ideas put together result competitive plane year Windy chose use built-up flaps tail surfaces construction completely detailed several tapes As just constructed same surfaces new plane particularly interested comparing techniques weights thing Windy used molded leading edge stab interesting discussion wood selection flaps construction geometry also very interesting informative areas new subtle changes incorporated earlier tapes result new technologies 86 Model Aviation 4 As know Windy has won Concours Watching development beautiful planes both enjoyable inspiring Id like highlight series Windy shows metal flank numbers candy colors really case picture being worth thousand words effect brilliant really isnt difficult seems Two tips passed Windy really neat first use degreaser product called Sikkens M-600 wet-sand available everywhere PPG Acryli-Clean will also work enables finest grades wet-or-dry paper cut clogging example usually would use 600-grit can now use 1200 still cut easily Also can sand silver coats easily destroying base Wait till sand clear next tip too easy masking try heavy-duty kitchen aluminum foil Windy got Walt Prey Ive just used works extremely well wont believe Just tape foil want mold excess around No matter experienced you will benefit tapes Contact Windy new subscription service Pro Stunt Products 9 Union Ave Little Ferry NJ 07643 Tel 201 440-0905 4RC ElectricslKopski Continued page 74 can see what look like packs designated 93x three new SCRC packs Time taken seven-volt crossing point computer output curves Run 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Battery Performance Tests PackChargeTimeAh 93AC/l08414 93AC/l079131 93A 5 A75125 93AC/l079131 93BC/l079131 93BC/b833138 93B 5 A78313 93CC/10825137 93CC/b8-13 93C 5 A766128 93C 3 A7813 SCEC/l0775129 SCE 3 A846141 SCR 5 A758126 SCRC/10745124 SCR 5 A783139 What comes down SCRCs dont perform much differently older lower cost lighter weight SCR packand now Im out big bucks just find out add last-minute confu sion write very text just received May issue RC Report Electric column friends John Mountjoy Charlie Spear present some similar curves depicting SCRC being significantly better seems assorted E-writings along way did present correct picture just cant tell what youre getting until its too late As Im very happy modeler right now can bet last prop wont buying until gets straightened outif Thus concludes column way like tomy preference close upbeat note Win some lose some guess Anyway please address cor respondence directly to MA please enclose SASE correspondence youd like reply Andsee ya KRC Never Been Easier Fuel Up Fuel Better n Fueling plane outside used hassle Thanks new Sullivan Fuel Filler Valve 750 clever little in-line fuel tilling valve makes filling tank outside really easy 750 no covers open no fuel line lines disconnect unlike complicated filler valves no rubber seals crack wear out Better still Sullivan 750 compatible both gasoline glo fuels lets switch back forth between Try doing other fuel valve Usingabrass fill tube instead machined fuel connector 750 about half theprice other fuel filler valves So youre sick tired over-priced com plicated fuel filler valves pick up Sullivan P PRODUCTS today Youll fuel better no time P0 Box 5166 Baltimore MO 21224 Getting Better Ideas Off Ground August1993 87
Edition: Model Aviation - 1993/08
Page Numbers: 83, 85, 86, 87
CONTROL LINE AEROBATICS Ed t THIS IS truly exciting time precision aerobatics Ive sitting pit read hobby room reflecting column last hour Naturally ideas come letters phone calls special interest publications catalogs As Ive said before new items services hobby has become easier enjoyable pursue Last month mentioned some services worlds premier engine men offers Before let George [Ed George Aldrich Aldrich Models] describe what offers several projects working could great interest us first US-made limitedproduction tuned pipe 40 second motor fills real needa plain-bearing loop-scavenged 40 made Russia Right now limited number suitable motors available tuned-pipe stunt operation OS 46 VF OPS 4OSPP possibly SuperTigre 51 Thats well aware manufacturers tend either change discontinue motors timed stunt Also motors currently best US motors availability can change quicklywitness OS 40 VF George now working Willie Wylie develop rear-exhaust frontintake lightweight possibly under nine ounces ABC 40 timed stunt Castings being produced prototype should flying time read Dont expect actual production engines however until have tested correct youre interested drop George line current information other motor about same stage has broader application tuned-pipe motor Since demise 05 35S McCoy 40 etc havent good powerful utility motor would run well out box purposes George has supplied timing numbers general arrangements appropriate manufacturing agreements can set up could see really attractive moderately priced motor everyone can run Georges story work done though going use project myself reason work waythe best can remains fact engines have reworked never realized potential because desire find what secret tricks performed customer took apart before running [Then] customer thinks hes cheated cant put back together properly Let make clear forte fitting engine properly will never find lot polishing feel detrimental engine performance anything rough up bead blast certain areas form wetted surface gases model two-cycles moving fast polished surface runs hotter lets fuel charge slide too fast piston two-cycles valve moves past port quickly difficult get fuel charge cylinder theory has assist stored charge waiting get port opens Chrome-plating parts keeping same tolerance will result overheating loss power takes critical honing lapping tolerance control produce same power before chrome plating What get chrome-plated cylinder done properly renewed longer engine life important know piston position cylinder top stroke TDC customer cannot measure assures better setup engine sent out chrome work desired steps follows 1 Lap piston perfectly round 2 Hone cylinder round least 003 oversize assure over 001 chrome wall 3 Chrome-plate cylinder 0005 undersize piston 0002 oversize 4 Hone cylinder perfect fit relap chromed piston perfect roundness hone cylinder running fit Regardless carefully chromedsteel cylinder setup done takes longer reach full power ABC setups fit much tighter because brass cylinder expands piston alarmed loud squeaks squawks turning ABC/AAC engine through TDC As runs some noise will disappear try run-in ABC keeping slobbering rich tad rich side five minutes fine addition full chrome re chromed service special heat treating fitting cast iron piston/steel cylinder engines broadening technique worked out Rossi 15 back 70sand engines still running strong today What can offer now ability restore worn cylinder assemblies cast iron pistons least as-good-as-new compression Additional benefits include longer life due piston hardening Continued page 85 August 1993 83 Bill Noyes 1714 Mt Marty Dr CA 91789 markets series adjustable handles Range adjustments expert level Bill proud new 62-inch-span foam-wing Apache ST 60 power Frank McMillans latest Super Caudron OPS 40 tuned-pipe version has 63-inch wingspan 750-square-inch wing area Bill Ervins 52-inch-wingspan practice ship Cotton Candy powered Dixon SuperTigre 34 should r performer relatively easy offers strong installation well very good carburetor both performance ease adjustment Bills solution use sleeve over exterior Fox intake 1/2-inch inside dimension square tube exactly right job finding such tube could challenging Bill solved problem using technique borrowed stolen George Fogerty Almost good hardware store can supply copper pipe couplings 5/s-inch inside diameter straight coupling about inch long Converting round coupling square sleeve can accomplished piece 1/2-inch-square steel bar stock same store Georges method involves filing taper end steel bar applying liberal amount grease hammering coupling working progressively regreasing rod prevent sticking After shaping coupling should heated red heat allowed cool slowly relieve internal stresses caused forming process Bill cut off intake Combat Special just above lower spray bar holes Because crankshaft short carburetor must fit relatively low intake avoid interfering propeller raised areas around holes need ground down until flush sides intake Bill sawed through web front back sides intake allow sleeve fit over intake form good seal base sleeve should also shaped fit round contour crankcase base intake metal-filled epoxy used glue sleeve over intake both strength effective seal Clean parts thoroughly before assembly sure remove excess epoxy inside sleeve carburetor will mounted before epoxy hardens completely Cut off sleeve carburetor will just rest top original intake drill mounting holes sleeve appropriate point Metal-filled epoxy also used form seat carburetor Grease carburetor base screws stuff base carburetor tissue apply epoxy inside corners sleeve insert carburetor invert assembly excess epoxy will stay can get install screws secure carburetor After epoxy completely cured remove carburetor clean up excess epoxy Magnum Pro 36 engine Magnum Pro 36 RC mentioned April column good Profile Carrier candidate said engine priced right good qualityat least far physical appearance apparent parts fit concerned Unfortunately has critical faultit isnt 36 its 37 design displacement engine 365 cubic inches bore 208mm 819 inchesactually measured 820 inches stroke 176mm 693 inches oversize 14 percent seems common affliction among engines designed bigger competitors engine intended displacement-limited competi tion class SuperTigre Xli displaces 113 cubic inches OS. 12 really 13 Webra 32 displaces 323 cubic inches tendency appears to err small side representing engine can outperform accurately described competitors engines same advertised displacement must carefully check actual displacement referring specifications provided engineeasy enough local hobby shop mail no readily apparent parts swaps reduce displacement weight other attributes Magnum Pro 36 engine would seem make very good candidate AMA events requiring 3600 cubic inch maximum displacement size reduced fit rules Dont give up yet 4CL Aerobatics/McMiIIan Continued page 83 salvaging some cylinders become unusable can process applied production engines new used engines everything free flight control line radio control conjunction cylinder-port modification will offered give steadier engine run aerobatics events either unpiped piped todays Schnuerle-ported engines give strong four-cycle four-two break desirable stunt engine Most engines can easily retimed meet criterion Naturally have keen interest stunt engines constantly check various new engines see meet standards require Back late 1960s basic fitting ABC setup developed shop Needless say techniques have lost have developed some new better things along way Critical top performance total stability aluminum piston ABC setup special heat treatment produces setup totally stable requiring no relapping stoning after has run past few years modeling interests have centered childhood beginningsie Old-Timer Free Flight CL Stunt pure ignition engine running old gas n oil fuel Over past years Ive spent quite bit time testing retrofitting retesting various ignition engines like Super Cyclone Anderson Spitfire Orwick O&R etc leaving engines original plan form increased performance retrofitting has gratifying Ohlsson & Rice engines because cylinder permanently attached THE LEADER IN COMPETITION NEW NEW THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66A778 677 7 / 8 67 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFGOFSELECTHARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 833/,4568 845B6/27 9456677 1045667 106W8W 106EW 114677/778 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 August1993 85 Tr PROPELLERS CYCLE SERIES 100 p / jo -s RC PYLON RACING SERIES 500 DIAPITCH 7SN 5N 8/677/8 SERIES 400C 9777 W WIDE BLADE EW EXTRA WIDE N NARROW case difficult Under develop ment now method restoring rod wrist pin piston fit engines can put use Also under extensive test have various lubricants gasoline fuel/ignition operation am now convinced reason old engines 1930s 40s still really excellent condition 70 SAE oil always felt castor oil king came carrying heavy load tests have seen engines would over heat 25% castor oil after 30 seconds run out whole tank full power 25% 70-weight oil old thick lubenot new thinner racing nitro 70 ABC AAC cylinder assemblies SuperTigre 46 60 being used over world now probably will just offer ABC setup now fragile Contact George Aldrich Models 12822 Tarrytown San Antonio TX 78233 Tel 210 656-2021 will disappointed Another old friend Jim Hunt once again producing specialty items control line Some years agowhen much youngerJim produced several items recognized strongly time son Bob used adjustable handle win Nationals World Championship addition Jim produced simple durable stooge have using 18 years Jim has working recently product line includes time-proven items some new additions Strong Arm control system included horns -inch wire unique dural posts secure bushing support bellcrank configurations up four inches like bellcranks particular made 3/16-inch linen phenolic provided -inch brass bushing adequate support Other items include custom-made aluminum radial mounts stunt applications well-known landing gear setups foam wing applications wellengineered proven quality products Contact Jim 208 E Center St Box 68 Stockertown PA 18083 Tel 215 746-0106 times past columns Ive men tioned Windy Urtnowskis Pro-Stunt Products Windy continually giving himself improve event Some years ago started producing construction videos built various planes ground up early tapes include Nobler early piped ship very informativeincluding tips construction painting As produced tapes quality information improved expanded significantly 93 season new shop series details construction Windys Tweener ships Im hooked tapes fun watch real crafts man craftsperson politically correct work As bonus tape includes still photos pastin series 14 series starts basic foam wing techniques details Windy works through assembly wing including installing landing gear clips work wing tips addresses tip box leadouts contains solid dependable information real interest running commentary Windy contains veritable flood handy tips concepts weight manage ment whereby builder tracks component weight such wing skins uses lightest parts inboard wing obvious important sounds simple surface ideas put together result competitive plane year Windy chose use built-up flaps tail surfaces construction completely detailed several tapes As just constructed same surfaces new plane particularly interested comparing techniques weights thing Windy used molded leading edge stab interesting discussion wood selection flaps construction geometry also very interesting informative areas new subtle changes incorporated earlier tapes result new technologies 86 Model Aviation 4 As know Windy has won Concours Watching development beautiful planes both enjoyable inspiring Id like highlight series Windy shows metal flank numbers candy colors really case picture being worth thousand words effect brilliant really isnt difficult seems Two tips passed Windy really neat first use degreaser product called Sikkens M-600 wet-sand available everywhere PPG Acryli-Clean will also work enables finest grades wet-or-dry paper cut clogging example usually would use 600-grit can now use 1200 still cut easily Also can sand silver coats easily destroying base Wait till sand clear next tip too easy masking try heavy-duty kitchen aluminum foil Windy got Walt Prey Ive just used works extremely well wont believe Just tape foil want mold excess around No matter experienced you will benefit tapes Contact Windy new subscription service Pro Stunt Products 9 Union Ave Little Ferry NJ 07643 Tel 201 440-0905 4RC ElectricslKopski Continued page 74 can see what look like packs designated 93x three new SCRC packs Time taken seven-volt crossing point computer output curves Run 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Battery Performance Tests PackChargeTimeAh 93AC/l08414 93AC/l079131 93A 5 A75125 93AC/l079131 93BC/l079131 93BC/b833138 93B 5 A78313 93CC/10825137 93CC/b8-13 93C 5 A766128 93C 3 A7813 SCEC/l0775129 SCE 3 A846141 SCR 5 A758126 SCRC/10745124 SCR 5 A783139 What comes down SCRCs dont perform much differently older lower cost lighter weight SCR packand now Im out big bucks just find out add last-minute confu sion write very text just received May issue RC Report Electric column friends John Mountjoy Charlie Spear present some similar curves depicting SCRC being significantly better seems assorted E-writings along way did present correct picture just cant tell what youre getting until its too late As Im very happy modeler right now can bet last prop wont buying until gets straightened outif Thus concludes column way like tomy preference close upbeat note Win some lose some guess Anyway please address cor respondence directly to MA please enclose SASE correspondence youd like reply Andsee ya KRC Never Been Easier Fuel Up Fuel Better n Fueling plane outside used hassle Thanks new Sullivan Fuel Filler Valve 750 clever little in-line fuel tilling valve makes filling tank outside really easy 750 no covers open no fuel line lines disconnect unlike complicated filler valves no rubber seals crack wear out Better still Sullivan 750 compatible both gasoline glo fuels lets switch back forth between Try doing other fuel valve Usingabrass fill tube instead machined fuel connector 750 about half theprice other fuel filler valves So youre sick tired over-priced com plicated fuel filler valves pick up Sullivan P PRODUCTS today Youll fuel better no time P0 Box 5166 Baltimore MO 21224 Getting Better Ideas Off Ground August1993 87
Edition: Model Aviation - 1993/08
Page Numbers: 83, 85, 86, 87
CONTROL LINE AEROBATICS Ed t THIS IS truly exciting time precision aerobatics Ive sitting pit read hobby room reflecting column last hour Naturally ideas come letters phone calls special interest publications catalogs As Ive said before new items services hobby has become easier enjoyable pursue Last month mentioned some services worlds premier engine men offers Before let George [Ed George Aldrich Aldrich Models] describe what offers several projects working could great interest us first US-made limitedproduction tuned pipe 40 second motor fills real needa plain-bearing loop-scavenged 40 made Russia Right now limited number suitable motors available tuned-pipe stunt operation OS 46 VF OPS 4OSPP possibly SuperTigre 51 Thats well aware manufacturers tend either change discontinue motors timed stunt Also motors currently best US motors availability can change quicklywitness OS 40 VF George now working Willie Wylie develop rear-exhaust frontintake lightweight possibly under nine ounces ABC 40 timed stunt Castings being produced prototype should flying time read Dont expect actual production engines however until have tested correct youre interested drop George line current information other motor about same stage has broader application tuned-pipe motor Since demise 05 35S McCoy 40 etc havent good powerful utility motor would run well out box purposes George has supplied timing numbers general arrangements appropriate manufacturing agreements can set up could see really attractive moderately priced motor everyone can run Georges story work done though going use project myself reason work waythe best can remains fact engines have reworked never realized potential because desire find what secret tricks performed customer took apart before running [Then] customer thinks hes cheated cant put back together properly Let make clear forte fitting engine properly will never find lot polishing feel detrimental engine performance anything rough up bead blast certain areas form wetted surface gases model two-cycles moving fast polished surface runs hotter lets fuel charge slide too fast piston two-cycles valve moves past port quickly difficult get fuel charge cylinder theory has assist stored charge waiting get port opens Chrome-plating parts keeping same tolerance will result overheating loss power takes critical honing lapping tolerance control produce same power before chrome plating What get chrome-plated cylinder done properly renewed longer engine life important know piston position cylinder top stroke TDC customer cannot measure assures better setup engine sent out chrome work desired steps follows 1 Lap piston perfectly round 2 Hone cylinder round least 003 oversize assure over 001 chrome wall 3 Chrome-plate cylinder 0005 undersize piston 0002 oversize 4 Hone cylinder perfect fit relap chromed piston perfect roundness hone cylinder running fit Regardless carefully chromedsteel cylinder setup done takes longer reach full power ABC setups fit much tighter because brass cylinder expands piston alarmed loud squeaks squawks turning ABC/AAC engine through TDC As runs some noise will disappear try run-in ABC keeping slobbering rich tad rich side five minutes fine addition full chrome re chromed service special heat treating fitting cast iron piston/steel cylinder engines broadening technique worked out Rossi 15 back 70sand engines still running strong today What can offer now ability restore worn cylinder assemblies cast iron pistons least as-good-as-new compression Additional benefits include longer life due piston hardening Continued page 85 August 1993 83 Bill Noyes 1714 Mt Marty Dr CA 91789 markets series adjustable handles Range adjustments expert level Bill proud new 62-inch-span foam-wing Apache ST 60 power Frank McMillans latest Super Caudron OPS 40 tuned-pipe version has 63-inch wingspan 750-square-inch wing area Bill Ervins 52-inch-wingspan practice ship Cotton Candy powered Dixon SuperTigre 34 should r performer relatively easy offers strong installation well very good carburetor both performance ease adjustment Bills solution use sleeve over exterior Fox intake 1/2-inch inside dimension square tube exactly right job finding such tube could challenging Bill solved problem using technique borrowed stolen George Fogerty Almost good hardware store can supply copper pipe couplings 5/s-inch inside diameter straight coupling about inch long Converting round coupling square sleeve can accomplished piece 1/2-inch-square steel bar stock same store Georges method involves filing taper end steel bar applying liberal amount grease hammering coupling working progressively regreasing rod prevent sticking After shaping coupling should heated red heat allowed cool slowly relieve internal stresses caused forming process Bill cut off intake Combat Special just above lower spray bar holes Because crankshaft short carburetor must fit relatively low intake avoid interfering propeller raised areas around holes need ground down until flush sides intake Bill sawed through web front back sides intake allow sleeve fit over intake form good seal base sleeve should also shaped fit round contour crankcase base intake metal-filled epoxy used glue sleeve over intake both strength effective seal Clean parts thoroughly before assembly sure remove excess epoxy inside sleeve carburetor will mounted before epoxy hardens completely Cut off sleeve carburetor will just rest top original intake drill mounting holes sleeve appropriate point Metal-filled epoxy also used form seat carburetor Grease carburetor base screws stuff base carburetor tissue apply epoxy inside corners sleeve insert carburetor invert assembly excess epoxy will stay can get install screws secure carburetor After epoxy completely cured remove carburetor clean up excess epoxy Magnum Pro 36 engine Magnum Pro 36 RC mentioned April column good Profile Carrier candidate said engine priced right good qualityat least far physical appearance apparent parts fit concerned Unfortunately has critical faultit isnt 36 its 37 design displacement engine 365 cubic inches bore 208mm 819 inchesactually measured 820 inches stroke 176mm 693 inches oversize 14 percent seems common affliction among engines designed bigger competitors engine intended displacement-limited competi tion class SuperTigre Xli displaces 113 cubic inches OS. 12 really 13 Webra 32 displaces 323 cubic inches tendency appears to err small side representing engine can outperform accurately described competitors engines same advertised displacement must carefully check actual displacement referring specifications provided engineeasy enough local hobby shop mail no readily apparent parts swaps reduce displacement weight other attributes Magnum Pro 36 engine would seem make very good candidate AMA events requiring 3600 cubic inch maximum displacement size reduced fit rules Dont give up yet 4CL Aerobatics/McMiIIan Continued page 83 salvaging some cylinders become unusable can process applied production engines new used engines everything free flight control line radio control conjunction cylinder-port modification will offered give steadier engine run aerobatics events either unpiped piped todays Schnuerle-ported engines give strong four-cycle four-two break desirable stunt engine Most engines can easily retimed meet criterion Naturally have keen interest stunt engines constantly check various new engines see meet standards require Back late 1960s basic fitting ABC setup developed shop Needless say techniques have lost have developed some new better things along way Critical top performance total stability aluminum piston ABC setup special heat treatment produces setup totally stable requiring no relapping stoning after has run past few years modeling interests have centered childhood beginningsie Old-Timer Free Flight CL Stunt pure ignition engine running old gas n oil fuel Over past years Ive spent quite bit time testing retrofitting retesting various ignition engines like Super Cyclone Anderson Spitfire Orwick O&R etc leaving engines original plan form increased performance retrofitting has gratifying Ohlsson & Rice engines because cylinder permanently attached THE LEADER IN COMPETITION NEW NEW THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66A778 677 7 / 8 67 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFGOFSELECTHARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 833/,4568 845B6/27 9456677 1045667 106W8W 106EW 114677/778 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 August1993 85 Tr PROPELLERS CYCLE SERIES 100 p / jo -s RC PYLON RACING SERIES 500 DIAPITCH 7SN 5N 8/677/8 SERIES 400C 9777 W WIDE BLADE EW EXTRA WIDE N NARROW case difficult Under develop ment now method restoring rod wrist pin piston fit engines can put use Also under extensive test have various lubricants gasoline fuel/ignition operation am now convinced reason old engines 1930s 40s still really excellent condition 70 SAE oil always felt castor oil king came carrying heavy load tests have seen engines would over heat 25% castor oil after 30 seconds run out whole tank full power 25% 70-weight oil old thick lubenot new thinner racing nitro 70 ABC AAC cylinder assemblies SuperTigre 46 60 being used over world now probably will just offer ABC setup now fragile Contact George Aldrich Models 12822 Tarrytown San Antonio TX 78233 Tel 210 656-2021 will disappointed Another old friend Jim Hunt once again producing specialty items control line Some years agowhen much youngerJim produced several items recognized strongly time son Bob used adjustable handle win Nationals World Championship addition Jim produced simple durable stooge have using 18 years Jim has working recently product line includes time-proven items some new additions Strong Arm control system included horns -inch wire unique dural posts secure bushing support bellcrank configurations up four inches like bellcranks particular made 3/16-inch linen phenolic provided -inch brass bushing adequate support Other items include custom-made aluminum radial mounts stunt applications well-known landing gear setups foam wing applications wellengineered proven quality products Contact Jim 208 E Center St Box 68 Stockertown PA 18083 Tel 215 746-0106 times past columns Ive men tioned Windy Urtnowskis Pro-Stunt Products Windy continually giving himself improve event Some years ago started producing construction videos built various planes ground up early tapes include Nobler early piped ship very informativeincluding tips construction painting As produced tapes quality information improved expanded significantly 93 season new shop series details construction Windys Tweener ships Im hooked tapes fun watch real crafts man craftsperson politically correct work As bonus tape includes still photos pastin series 14 series starts basic foam wing techniques details Windy works through assembly wing including installing landing gear clips work wing tips addresses tip box leadouts contains solid dependable information real interest running commentary Windy contains veritable flood handy tips concepts weight manage ment whereby builder tracks component weight such wing skins uses lightest parts inboard wing obvious important sounds simple surface ideas put together result competitive plane year Windy chose use built-up flaps tail surfaces construction completely detailed several tapes As just constructed same surfaces new plane particularly interested comparing techniques weights thing Windy used molded leading edge stab interesting discussion wood selection flaps construction geometry also very interesting informative areas new subtle changes incorporated earlier tapes result new technologies 86 Model Aviation 4 As know Windy has won Concours Watching development beautiful planes both enjoyable inspiring Id like highlight series Windy shows metal flank numbers candy colors really case picture being worth thousand words effect brilliant really isnt difficult seems Two tips passed Windy really neat first use degreaser product called Sikkens M-600 wet-sand available everywhere PPG Acryli-Clean will also work enables finest grades wet-or-dry paper cut clogging example usually would use 600-grit can now use 1200 still cut easily Also can sand silver coats easily destroying base Wait till sand clear next tip too easy masking try heavy-duty kitchen aluminum foil Windy got Walt Prey Ive just used works extremely well wont believe Just tape foil want mold excess around No matter experienced you will benefit tapes Contact Windy new subscription service Pro Stunt Products 9 Union Ave Little Ferry NJ 07643 Tel 201 440-0905 4RC ElectricslKopski Continued page 74 can see what look like packs designated 93x three new SCRC packs Time taken seven-volt crossing point computer output curves Run 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Battery Performance Tests PackChargeTimeAh 93AC/l08414 93AC/l079131 93A 5 A75125 93AC/l079131 93BC/l079131 93BC/b833138 93B 5 A78313 93CC/10825137 93CC/b8-13 93C 5 A766128 93C 3 A7813 SCEC/l0775129 SCE 3 A846141 SCR 5 A758126 SCRC/10745124 SCR 5 A783139 What comes down SCRCs dont perform much differently older lower cost lighter weight SCR packand now Im out big bucks just find out add last-minute confu sion write very text just received May issue RC Report Electric column friends John Mountjoy Charlie Spear present some similar curves depicting SCRC being significantly better seems assorted E-writings along way did present correct picture just cant tell what youre getting until its too late As Im very happy modeler right now can bet last prop wont buying until gets straightened outif Thus concludes column way like tomy preference close upbeat note Win some lose some guess Anyway please address cor respondence directly to MA please enclose SASE correspondence youd like reply Andsee ya KRC Never Been Easier Fuel Up Fuel Better n Fueling plane outside used hassle Thanks new Sullivan Fuel Filler Valve 750 clever little in-line fuel tilling valve makes filling tank outside really easy 750 no covers open no fuel line lines disconnect unlike complicated filler valves no rubber seals crack wear out Better still Sullivan 750 compatible both gasoline glo fuels lets switch back forth between Try doing other fuel valve Usingabrass fill tube instead machined fuel connector 750 about half theprice other fuel filler valves So youre sick tired over-priced com plicated fuel filler valves pick up Sullivan P PRODUCTS today Youll fuel better no time P0 Box 5166 Baltimore MO 21224 Getting Better Ideas Off Ground August1993 87
Edition: Model Aviation - 1993/08
Page Numbers: 83, 85, 86, 87
CONTROL LINE AEROBATICS Ed t THIS IS truly exciting time precision aerobatics Ive sitting pit read hobby room reflecting column last hour Naturally ideas come letters phone calls special interest publications catalogs As Ive said before new items services hobby has become easier enjoyable pursue Last month mentioned some services worlds premier engine men offers Before let George [Ed George Aldrich Aldrich Models] describe what offers several projects working could great interest us first US-made limitedproduction tuned pipe 40 second motor fills real needa plain-bearing loop-scavenged 40 made Russia Right now limited number suitable motors available tuned-pipe stunt operation OS 46 VF OPS 4OSPP possibly SuperTigre 51 Thats well aware manufacturers tend either change discontinue motors timed stunt Also motors currently best US motors availability can change quicklywitness OS 40 VF George now working Willie Wylie develop rear-exhaust frontintake lightweight possibly under nine ounces ABC 40 timed stunt Castings being produced prototype should flying time read Dont expect actual production engines however until have tested correct youre interested drop George line current information other motor about same stage has broader application tuned-pipe motor Since demise 05 35S McCoy 40 etc havent good powerful utility motor would run well out box purposes George has supplied timing numbers general arrangements appropriate manufacturing agreements can set up could see really attractive moderately priced motor everyone can run Georges story work done though going use project myself reason work waythe best can remains fact engines have reworked never realized potential because desire find what secret tricks performed customer took apart before running [Then] customer thinks hes cheated cant put back together properly Let make clear forte fitting engine properly will never find lot polishing feel detrimental engine performance anything rough up bead blast certain areas form wetted surface gases model two-cycles moving fast polished surface runs hotter lets fuel charge slide too fast piston two-cycles valve moves past port quickly difficult get fuel charge cylinder theory has assist stored charge waiting get port opens Chrome-plating parts keeping same tolerance will result overheating loss power takes critical honing lapping tolerance control produce same power before chrome plating What get chrome-plated cylinder done properly renewed longer engine life important know piston position cylinder top stroke TDC customer cannot measure assures better setup engine sent out chrome work desired steps follows 1 Lap piston perfectly round 2 Hone cylinder round least 003 oversize assure over 001 chrome wall 3 Chrome-plate cylinder 0005 undersize piston 0002 oversize 4 Hone cylinder perfect fit relap chromed piston perfect roundness hone cylinder running fit Regardless carefully chromedsteel cylinder setup done takes longer reach full power ABC setups fit much tighter because brass cylinder expands piston alarmed loud squeaks squawks turning ABC/AAC engine through TDC As runs some noise will disappear try run-in ABC keeping slobbering rich tad rich side five minutes fine addition full chrome re chromed service special heat treating fitting cast iron piston/steel cylinder engines broadening technique worked out Rossi 15 back 70sand engines still running strong today What can offer now ability restore worn cylinder assemblies cast iron pistons least as-good-as-new compression Additional benefits include longer life due piston hardening Continued page 85 August 1993 83 Bill Noyes 1714 Mt Marty Dr CA 91789 markets series adjustable handles Range adjustments expert level Bill proud new 62-inch-span foam-wing Apache ST 60 power Frank McMillans latest Super Caudron OPS 40 tuned-pipe version has 63-inch wingspan 750-square-inch wing area Bill Ervins 52-inch-wingspan practice ship Cotton Candy powered Dixon SuperTigre 34 should r performer relatively easy offers strong installation well very good carburetor both performance ease adjustment Bills solution use sleeve over exterior Fox intake 1/2-inch inside dimension square tube exactly right job finding such tube could challenging Bill solved problem using technique borrowed stolen George Fogerty Almost good hardware store can supply copper pipe couplings 5/s-inch inside diameter straight coupling about inch long Converting round coupling square sleeve can accomplished piece 1/2-inch-square steel bar stock same store Georges method involves filing taper end steel bar applying liberal amount grease hammering coupling working progressively regreasing rod prevent sticking After shaping coupling should heated red heat allowed cool slowly relieve internal stresses caused forming process Bill cut off intake Combat Special just above lower spray bar holes Because crankshaft short carburetor must fit relatively low intake avoid interfering propeller raised areas around holes need ground down until flush sides intake Bill sawed through web front back sides intake allow sleeve fit over intake form good seal base sleeve should also shaped fit round contour crankcase base intake metal-filled epoxy used glue sleeve over intake both strength effective seal Clean parts thoroughly before assembly sure remove excess epoxy inside sleeve carburetor will mounted before epoxy hardens completely Cut off sleeve carburetor will just rest top original intake drill mounting holes sleeve appropriate point Metal-filled epoxy also used form seat carburetor Grease carburetor base screws stuff base carburetor tissue apply epoxy inside corners sleeve insert carburetor invert assembly excess epoxy will stay can get install screws secure carburetor After epoxy completely cured remove carburetor clean up excess epoxy Magnum Pro 36 engine Magnum Pro 36 RC mentioned April column good Profile Carrier candidate said engine priced right good qualityat least far physical appearance apparent parts fit concerned Unfortunately has critical faultit isnt 36 its 37 design displacement engine 365 cubic inches bore 208mm 819 inchesactually measured 820 inches stroke 176mm 693 inches oversize 14 percent seems common affliction among engines designed bigger competitors engine intended displacement-limited competi tion class SuperTigre Xli displaces 113 cubic inches OS. 12 really 13 Webra 32 displaces 323 cubic inches tendency appears to err small side representing engine can outperform accurately described competitors engines same advertised displacement must carefully check actual displacement referring specifications provided engineeasy enough local hobby shop mail no readily apparent parts swaps reduce displacement weight other attributes Magnum Pro 36 engine would seem make very good candidate AMA events requiring 3600 cubic inch maximum displacement size reduced fit rules Dont give up yet 4CL Aerobatics/McMiIIan Continued page 83 salvaging some cylinders become unusable can process applied production engines new used engines everything free flight control line radio control conjunction cylinder-port modification will offered give steadier engine run aerobatics events either unpiped piped todays Schnuerle-ported engines give strong four-cycle four-two break desirable stunt engine Most engines can easily retimed meet criterion Naturally have keen interest stunt engines constantly check various new engines see meet standards require Back late 1960s basic fitting ABC setup developed shop Needless say techniques have lost have developed some new better things along way Critical top performance total stability aluminum piston ABC setup special heat treatment produces setup totally stable requiring no relapping stoning after has run past few years modeling interests have centered childhood beginningsie Old-Timer Free Flight CL Stunt pure ignition engine running old gas n oil fuel Over past years Ive spent quite bit time testing retrofitting retesting various ignition engines like Super Cyclone Anderson Spitfire Orwick O&R etc leaving engines original plan form increased performance retrofitting has gratifying Ohlsson & Rice engines because cylinder permanently attached THE LEADER IN COMPETITION NEW NEW THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66A778 677 7 / 8 67 678 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFGOFSELECTHARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 534 634 72833456 833/,4568 845B6/27 9456677 1045667 106W8W 106EW 114677/778 115W 116EW 1167 124W 125W 1256 1356 1456 1556 164N 16678 August1993 85 Tr PROPELLERS CYCLE SERIES 100 p / jo -s RC PYLON RACING SERIES 500 DIAPITCH 7SN 5N 8/677/8 SERIES 400C 9777 W WIDE BLADE EW EXTRA WIDE N NARROW case difficult Under develop ment now method restoring rod wrist pin piston fit engines can put use Also under extensive test have various lubricants gasoline fuel/ignition operation am now convinced reason old engines 1930s 40s still really excellent condition 70 SAE oil always felt castor oil king came carrying heavy load tests have seen engines would over heat 25% castor oil after 30 seconds run out whole tank full power 25% 70-weight oil old thick lubenot new thinner racing nitro 70 ABC AAC cylinder assemblies SuperTigre 46 60 being used over world now probably will just offer ABC setup now fragile Contact George Aldrich Models 12822 Tarrytown San Antonio TX 78233 Tel 210 656-2021 will disappointed Another old friend Jim Hunt once again producing specialty items control line Some years agowhen much youngerJim produced several items recognized strongly time son Bob used adjustable handle win Nationals World Championship addition Jim produced simple durable stooge have using 18 years Jim has working recently product line includes time-proven items some new additions Strong Arm control system included horns -inch wire unique dural posts secure bushing support bellcrank configurations up four inches like bellcranks particular made 3/16-inch linen phenolic provided -inch brass bushing adequate support Other items include custom-made aluminum radial mounts stunt applications well-known landing gear setups foam wing applications wellengineered proven quality products Contact Jim 208 E Center St Box 68 Stockertown PA 18083 Tel 215 746-0106 times past columns Ive men tioned Windy Urtnowskis Pro-Stunt Products Windy continually giving himself improve event Some years ago started producing construction videos built various planes ground up early tapes include Nobler early piped ship very informativeincluding tips construction painting As produced tapes quality information improved expanded significantly 93 season new shop series details construction Windys Tweener ships Im hooked tapes fun watch real crafts man craftsperson politically correct work As bonus tape includes still photos pastin series 14 series starts basic foam wing techniques details Windy works through assembly wing including installing landing gear clips work wing tips addresses tip box leadouts contains solid dependable information real interest running commentary Windy contains veritable flood handy tips concepts weight manage ment whereby builder tracks component weight such wing skins uses lightest parts inboard wing obvious important sounds simple surface ideas put together result competitive plane year Windy chose use built-up flaps tail surfaces construction completely detailed several tapes As just constructed same surfaces new plane particularly interested comparing techniques weights thing Windy used molded leading edge stab interesting discussion wood selection flaps construction geometry also very interesting informative areas new subtle changes incorporated earlier tapes result new technologies 86 Model Aviation 4 As know Windy has won Concours Watching development beautiful planes both enjoyable inspiring Id like highlight series Windy shows metal flank numbers candy colors really case picture being worth thousand words effect brilliant really isnt difficult seems Two tips passed Windy really neat first use degreaser product called Sikkens M-600 wet-sand available everywhere PPG Acryli-Clean will also work enables finest grades wet-or-dry paper cut clogging example usually would use 600-grit can now use 1200 still cut easily Also can sand silver coats easily destroying base Wait till sand clear next tip too easy masking try heavy-duty kitchen aluminum foil Windy got Walt Prey Ive just used works extremely well wont believe Just tape foil want mold excess around No matter experienced you will benefit tapes Contact Windy new subscription service Pro Stunt Products 9 Union Ave Little Ferry NJ 07643 Tel 201 440-0905 4RC ElectricslKopski Continued page 74 can see what look like packs designated 93x three new SCRC packs Time taken seven-volt crossing point computer output curves Run 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Battery Performance Tests PackChargeTimeAh 93AC/l08414 93AC/l079131 93A 5 A75125 93AC/l079131 93BC/l079131 93BC/b833138 93B 5 A78313 93CC/10825137 93CC/b8-13 93C 5 A766128 93C 3 A7813 SCEC/l0775129 SCE 3 A846141 SCR 5 A758126 SCRC/10745124 SCR 5 A783139 What comes down SCRCs dont perform much differently older lower cost lighter weight SCR packand now Im out big bucks just find out add last-minute confu sion write very text just received May issue RC Report Electric column friends John Mountjoy Charlie Spear present some similar curves depicting SCRC being significantly better seems assorted E-writings along way did present correct picture just cant tell what youre getting until its too late As Im very happy modeler right now can bet last prop wont buying until gets straightened outif Thus concludes column way like tomy preference close upbeat note Win some lose some guess Anyway please address cor respondence directly to MA please enclose SASE correspondence youd like reply Andsee ya KRC Never Been Easier Fuel Up Fuel Better n Fueling plane outside used hassle Thanks new Sullivan Fuel Filler Valve 750 clever little in-line fuel tilling valve makes filling tank outside really easy 750 no covers open no fuel line lines disconnect unlike complicated filler valves no rubber seals crack wear out Better still Sullivan 750 compatible both gasoline glo fuels lets switch back forth between Try doing other fuel valve Usingabrass fill tube instead machined fuel connector 750 about half theprice other fuel filler valves So youre sick tired over-priced com plicated fuel filler valves pick up Sullivan P PRODUCTS today Youll fuel better no time P0 Box 5166 Baltimore MO 21224 Getting Better Ideas Off Ground August1993 87