DB Mathews Mail brings information modeling press about new products directed readers varied interests Some product announcements widely distributed try free plugs usually deferred new products sections magazines However some new products such interest sufficient novelty merit hands-on trials subsequent reports Through years new products such FabriKote Koverall MonoKote Ceconite R/C Solartex cyanoacrylate adhesives Davis diesel conversions etc subjects modeling magazine articles although some products work successfully hands never written about 1981 announcement new potentially revolutionary product modeling use phone call developer testing sample led embarrassing simultaneous publication something editors care articles November 1982 issues ModelAirplane News Flying Models Saying Bill Carpenters CH Electronics capacitive discharge spark ignition CDI system caught modelers gross understatement claim no credit device sold itself 17 years ensuing articles CDI system has become popular around world benchmark imitators time systems invention Carpenter auto mechanic/modeler living Riverton WY worked out way miniaturize electronic ignition system coming use automobiles use successfully run model aircraft engines Carpenter devised method amplifying very low electrical impulses generated passing magnet Hall effect across sensor enough electromotive force EMF fire spark across plugs points Unlike troublesome make break points old spark ignition engines system no open points What did have hottest fattest spark ever seen adaptation should confused Transistorized Ignition Systems such Schmidt Trigger used traditional points antique converted engines required Society Antique Modelers SAM events systems have set off minor revolution own way As popularity large-displacement chainsaw weed trimmer engines modeling increased larger four-stroke power plants introduced real value CH system became apparent Four-strokes can timed start no kickback idle incredibly slowly yet throttle up instantly improved fuel economy reduced noise levels suspect some people reading have seen four-cycle run slowly quietly CDI revolutions could almost counted visually spectacular results occur Carpenter ignition systems Walbro carburetors adapted glow fuelguzzling tough-to-needle ST 3000 OS BGX Big Moki etc conversions have touch carburetor settings four years heavy flying start flip idle theyre floor fans have saved nearly enough fuel costs pay CDI Prejudice Until recently cared much commonly used converted gas engines feelings motivated mostly weight large magnetos made difficult cowl other hand robust construction using needle bearings rods ball bearings large crankshafts pump-type carburetors ability run well minimal maintenance years appeal Bill Carpenter mentioned several occasions should remove magneto flywheel weed trimmer engine install CDI resisted grounds CDIs still ugly sin maybe because resistance change comes creeping age exasperation Bill sent McCulloch 32 conversions evaluation Lil Mac Bill calls conversion weedie reference its origins think classier name Lil Mac love engine starts easily idles wonderfully puts out 7800 rpm 18 x 8 composite propeller runs three ounces 154 Model Aviation rigre 3000 gasoline Waibro pump carburetor spark ignition Turns 8500 rpm 18 x 8 Master Airscrewl Moki 18 3000 CH module mount Waibro carburetor throttle couple advance TCA battery pack switch mount under tank Bel Ray oil gallon unleaded gas weighs 39 ounces bare still ugly Lii Mac well suited aerobatic models about 950 square inches 11-13 pounds Its small frontal area makes relatively easy cowl -scale Cub T-Craft etc would wonderful scheme things engine slightly less powerful G-38 close Quadra 35 much stronger G-23 yet weighs costs much less Tigers Mokis ST 3000s turn about 8500 rpm 18 x 8 propeller Moki 18 shows full 9000 tachometer However big glow engines have needle bearings rods require least 10 ounces Klotz Kl 100 other high quality oil per gallon gas avoid damage Carpenter associates can convert engines will sell complete units say some discount stores special complete weed trimmer less $100 small engine repair shops often have engines left trimmers require repairs excess cost new Usually drive shaft cord reel broken engine itself has hours excellent performance left CH people related situation phone demonstrating Lil Mac fly-in word spread KmartTM down road weed trimmers sale CH crew left Riverton about dozen new trimmers less engines sticking out trash barrels cant avoid speculating about what conclusion park maintenance crew must have reached Evolution One explanation success Bill Carpenter has lies consistent search development improvement CDI early versions 1981 magnet pressed backplate CB metal spinner sensors tied crankcase aluminum strap tie wraps Later two phenolic wheels fixed movable used per unit Moki 18 photo Tigers have magnet propeller drive sensor case arrangements provided movable timing coupled carburetor barrel other words timing retarded low throttle advances fires piston closer head way up opens Bill calls Throttle Coupled Advance TCA Unlike antique sparkers dont have advance spark rotating arm right behind spinning propeller leaning fuel mix spark advanced result same Nor necessary fine-tune compression carburetion must done diesel arrangements provide timing adjustability optimize starting peak power also involve mechanical linkages can slip out alignment require some skill setting up CH has perfected transistorized detector Syncro spark automatically adjusts timing rpm times second first flip propeller tells sensor retard firing time once engine running spark advanced select optimum timing/carburetor combination somewhat function degree advance preset relative position sensor magnet However since no linkages no retuning adjustment once set earliest ignition modules noticeably larger newer ones used considerably energy four Ni-Cds primitive high-tension connectors plug compared new units fragile coils Several plug connector options available including shielded Bosch units superb quality Additionally new spark plugs US manufacture reasonable prices sale Most radio frequency noise problems emanate plug connector associated placing ignition components including switches too close airborne radio pack have flown spark systems AM equipment FM does seem less sensitive radio frequency noise units combine motor mount CDI available spark advance built making very neat installations added weight module batteries partially offset reduced weight fuel required instance big Tiger will run just long 12 ounces gasoline will 16 ounces glow fuel Service Bill Carpenter has spent years developing what has become worlds best-selling spark ignition system perhaps importantly has developed impeccable reputation high-quality service Inventing better mousetrap doesnt count much unless backed friendly technical advice rapid return damaged units Whats Point Perhaps succinct condensation systems advantages can found George Sauer s use larger models advantages jump out grab 120-inch P-38 beautiful model powered two ST 2500 engines running Carpenter units George has adjusted engines turn within 100 rpm other throttle setting run after run no additional adjustment usually start first flip never kick bite turn relatively oversized three-bladed props great authority idle magnificently What can say mber1997 155 McCulloch weed trimmer engine converted chopping off magneto other unneeded hardware Runs well CDI Syncro spark George Sauers 120-inch P-38 uses two Superigre 2500s perfectly synchronized CH Electronics CDI systems
Edition: Model Aviation - 1997/12
Page Numbers: 154, 155
Edition: Model Aviation - 1997/12
Page Numbers: 154, 155
DB Mathews Mail brings information modeling press about new products directed readers varied interests Some product announcements widely distributed try free plugs usually deferred new products sections magazines However some new products such interest sufficient novelty merit hands-on trials subsequent reports Through years new products such FabriKote Koverall MonoKote Ceconite R/C Solartex cyanoacrylate adhesives Davis diesel conversions etc subjects modeling magazine articles although some products work successfully hands never written about 1981 announcement new potentially revolutionary product modeling use phone call developer testing sample led embarrassing simultaneous publication something editors care articles November 1982 issues ModelAirplane News Flying Models Saying Bill Carpenters CH Electronics capacitive discharge spark ignition CDI system caught modelers gross understatement claim no credit device sold itself 17 years ensuing articles CDI system has become popular around world benchmark imitators time systems invention Carpenter auto mechanic/modeler living Riverton WY worked out way miniaturize electronic ignition system coming use automobiles use successfully run model aircraft engines Carpenter devised method amplifying very low electrical impulses generated passing magnet Hall effect across sensor enough electromotive force EMF fire spark across plugs points Unlike troublesome make break points old spark ignition engines system no open points What did have hottest fattest spark ever seen adaptation should confused Transistorized Ignition Systems such Schmidt Trigger used traditional points antique converted engines required Society Antique Modelers SAM events systems have set off minor revolution own way As popularity large-displacement chainsaw weed trimmer engines modeling increased larger four-stroke power plants introduced real value CH system became apparent Four-strokes can timed start no kickback idle incredibly slowly yet throttle up instantly improved fuel economy reduced noise levels suspect some people reading have seen four-cycle run slowly quietly CDI revolutions could almost counted visually spectacular results occur Carpenter ignition systems Walbro carburetors adapted glow fuelguzzling tough-to-needle ST 3000 OS BGX Big Moki etc conversions have touch carburetor settings four years heavy flying start flip idle theyre floor fans have saved nearly enough fuel costs pay CDI Prejudice Until recently cared much commonly used converted gas engines feelings motivated mostly weight large magnetos made difficult cowl other hand robust construction using needle bearings rods ball bearings large crankshafts pump-type carburetors ability run well minimal maintenance years appeal Bill Carpenter mentioned several occasions should remove magneto flywheel weed trimmer engine install CDI resisted grounds CDIs still ugly sin maybe because resistance change comes creeping age exasperation Bill sent McCulloch 32 conversions evaluation Lil Mac Bill calls conversion weedie reference its origins think classier name Lil Mac love engine starts easily idles wonderfully puts out 7800 rpm 18 x 8 composite propeller runs three ounces 154 Model Aviation rigre 3000 gasoline Waibro pump carburetor spark ignition Turns 8500 rpm 18 x 8 Master Airscrewl Moki 18 3000 CH module mount Waibro carburetor throttle couple advance TCA battery pack switch mount under tank Bel Ray oil gallon unleaded gas weighs 39 ounces bare still ugly Lii Mac well suited aerobatic models about 950 square inches 11-13 pounds Its small frontal area makes relatively easy cowl -scale Cub T-Craft etc would wonderful scheme things engine slightly less powerful G-38 close Quadra 35 much stronger G-23 yet weighs costs much less Tigers Mokis ST 3000s turn about 8500 rpm 18 x 8 propeller Moki 18 shows full 9000 tachometer However big glow engines have needle bearings rods require least 10 ounces Klotz Kl 100 other high quality oil per gallon gas avoid damage Carpenter associates can convert engines will sell complete units say some discount stores special complete weed trimmer less $100 small engine repair shops often have engines left trimmers require repairs excess cost new Usually drive shaft cord reel broken engine itself has hours excellent performance left CH people related situation phone demonstrating Lil Mac fly-in word spread KmartTM down road weed trimmers sale CH crew left Riverton about dozen new trimmers less engines sticking out trash barrels cant avoid speculating about what conclusion park maintenance crew must have reached Evolution One explanation success Bill Carpenter has lies consistent search development improvement CDI early versions 1981 magnet pressed backplate CB metal spinner sensors tied crankcase aluminum strap tie wraps Later two phenolic wheels fixed movable used per unit Moki 18 photo Tigers have magnet propeller drive sensor case arrangements provided movable timing coupled carburetor barrel other words timing retarded low throttle advances fires piston closer head way up opens Bill calls Throttle Coupled Advance TCA Unlike antique sparkers dont have advance spark rotating arm right behind spinning propeller leaning fuel mix spark advanced result same Nor necessary fine-tune compression carburetion must done diesel arrangements provide timing adjustability optimize starting peak power also involve mechanical linkages can slip out alignment require some skill setting up CH has perfected transistorized detector Syncro spark automatically adjusts timing rpm times second first flip propeller tells sensor retard firing time once engine running spark advanced select optimum timing/carburetor combination somewhat function degree advance preset relative position sensor magnet However since no linkages no retuning adjustment once set earliest ignition modules noticeably larger newer ones used considerably energy four Ni-Cds primitive high-tension connectors plug compared new units fragile coils Several plug connector options available including shielded Bosch units superb quality Additionally new spark plugs US manufacture reasonable prices sale Most radio frequency noise problems emanate plug connector associated placing ignition components including switches too close airborne radio pack have flown spark systems AM equipment FM does seem less sensitive radio frequency noise units combine motor mount CDI available spark advance built making very neat installations added weight module batteries partially offset reduced weight fuel required instance big Tiger will run just long 12 ounces gasoline will 16 ounces glow fuel Service Bill Carpenter has spent years developing what has become worlds best-selling spark ignition system perhaps importantly has developed impeccable reputation high-quality service Inventing better mousetrap doesnt count much unless backed friendly technical advice rapid return damaged units Whats Point Perhaps succinct condensation systems advantages can found George Sauer s use larger models advantages jump out grab 120-inch P-38 beautiful model powered two ST 2500 engines running Carpenter units George has adjusted engines turn within 100 rpm other throttle setting run after run no additional adjustment usually start first flip never kick bite turn relatively oversized three-bladed props great authority idle magnificently What can say mber1997 155 McCulloch weed trimmer engine converted chopping off magneto other unneeded hardware Runs well CDI Syncro spark George Sauers 120-inch P-38 uses two Superigre 2500s perfectly synchronized CH Electronics CDI systems
