Bud Akinson ONE OF THE UNIQUE problems scratch scale builders have find canopy already manufactured will adapt particular scale project course standard P-51 P-47 etc usually advertised WW-lI canopies Sig has several such canopies So other manufacturers course WW-II airplanes dont use standard bubble-type canopies such Axis air forces along own Navy aircraft course air craft 30s So next best thing to make own Im sure us have tried too much luck Practically commercially made canopies vacuum formed requires special equipment consider able work just make two cano pies hope explain easy method have found requires little no spe cial equipment minimum work First off draw out canopy three-view plan find better make canopy plug fuse under construction cabin cockpit cut out formed plug may kind wood prefer balsa because its easy work usually scraps around construct plug because canopies large need too much wood plug Re member make plug little longer needed can trim fit prop erly sure sand plug fine paper scratches dents will transmit themselves canopy need finish paint plug using method Next drill hole bottom plug /2 in diameter glue 6or 7-in dowl glue dry secure ready form canopy Place plug dowel vise plug raised 4 5 jaws Secure tightly because will apply con siderable pressure pulling can opy Most hobby shops carry clear plastic butyrate sheets Sig has several thicknesses sizes $150 $250 sheet Cut butyrate sheet about twice size canopy will need hang-over hold Next step heat butyrate have found simple bathroom electric heater works well better say oven heat butyrate oven re quires form lot trouble dont have small bathroom heater check garage sales like picked up $200 Remove protection screen can easily heat butyrate sheet Cut butyrate sheet about 50% larger canopy able get good grip also heat center canopy trick have right amount heat continued page 80 Bottom Electric drilllower left corneras used Mint Julep meet rotate table Set up assist scale judges Model STA Ryan constructed Sig kit Dinset Fowler 26 Model Aviation Scale / Below Balsa plug used molding plastic canopy described text mounted sturdy dowel can clamped vise Above Wearing gloves pliable hot plastic butyrate pulled down quickly over balsa plug sure wear heavy gloves Below After trimming canopy shown stalled Macchi C-202 fighter scale model ship used Italians WW II Tercel continued mild fuel 10% nitro less 0008 diameter stranded lines up 52 ft can used cables available Sig Pylon cannot obtain lines dealer X-Cell Models Inc 347 Eastland Shopping Center Lexington KY 40505 can contacted prices availability Flying models new experience have booming horsepower larger competition models line tension considerably less However ro tational speed 45- 50-ft lines about same larger models Tercel can useful tool sharpen re conditions fuels exact ignition specifications particular glow plug Its easy-toread 0-10 amp ammeter shows precise power output will tell glance plug good engine flooded self-contained 2 volt battery may recharged over 150 times has fully charged rating 5 ampere hours peak power 200 watts circuitry safety fused 2 diameter highimpact polypropylene case has fluted base convenient han dling have add lead wires plug connector choice color-coded labeled terminals Buy GloBee Fire Plug hobby dealer today oy years fast reliable engine starts perfectly matched special requirements flexes its response very quick have yet looked up Ter cel male hawk particular pere grine falcon interested Control Line Precision Aerobatics want keep formed latest happenings competition scene should consider joining Precision Aerobatics Model Pilots Association dedicated promotion CL Precision Aerobatics Annual dues membership cludes monthly newsletter $600 care Wynn Paul 1630 Maywick Dr Lexington KY 40504 address Keith Trostle 10900 Phillips Dr Upper Marlboro MD 20870 DIVISION OF EMERSON ELECTRIC CO 6000 Fernview Ave Cincinnati Ohio 45212 RC Scale/Atkinson continued page 26 Using good pair gloves place butyrate sheet about 4 heating element slowly move back forth until plastic becomes pliable starts sag also should start smoke Im mediately remove heat lay over plug vise carefully center ing same time very firmly pull straight down over plug must done very quickly plastic will cool quickly around outer edges will distort form plug Hold several minutes cool let set about 10 mm until completely cooled Remove trim suit rea son canopy does come out right may reheat plastic sheet will slowly resume its original shape Its im portant its hot enough care should taken get too hot because canopy will distort clear may want try sample run before form ing canopy Trimming may painted use trim tape prepainted masking tape cut small strips three pictures show steps complete canopy items may formed manner such gun turrets gun bubbles lights etc time writing have just re turned 4th Annual Mint Julep R/C Meet Rough River Park Ken tucky has finest scale meets country Facilities superb Setting rolling hills north cen tral Kentucky lovely park lake facilities about 2500 ft black-top runway fly state Kentuckys Park Dept co-sponsor contest novelty itself certainly need help cooperation such parks governing bodies Kentucky Park Commission highly commended fine help further interest RC sport hobby flaw meet poor cooperation weather man rained off both Saturday Sun day Still flyable weather although wind little across runway Im afraid heavy rain cold weather Friday night may have kept some contest ants attending Although quan tity down quality evident both static flying attend ance three multi-engine stand-offs two Aerocommanders B-25 variety aircraft truly made up lower number scale models seen past years interesting innovations static turntable slowly rotated give judges really good look model table about 4 ft diameter stood about 2 ft ground gave judges chance see undercarriage plainly well underbelly model table could turned slowly use electric drill large dowel running turn 80 Model Aviation Fire Plug. optimum starting power need power source youll need years glow plug lights new GloBee Fire Plug GloBee Fire Plug igniterits completely inte grated glow plug starting system Its easy-to-operate rheostat con trol lever provides optimum current match weather table use rheostat speed could controlled unique judging table cost very little make Dale Arvin crew com mended excellent effort stand off scale Mint Julep Meet handing out bouquets always tireless effort Doug Early helpers should mentioned Several clubs worked together put fine meet have never attended Munt Julep Meet have missed largest finest Try make next year address 734 N 6th St Terrace Blue Springs MO 64015 CL Speed/Bussell continued page 33 simple terms means takes ex actly e distort brass takes distort mild steel dont have compare tensile yield modulus elasticity strengths free machining brass mild steel very long before realiz ing brass nearly strong reason others should obvious brass cylinder liners should thicker ones made steel Up now production engine manufac turers have taken consideration Brass will take little no abuse would-be engine reworker can bend brass liner use force r loving crankcase casting quicker can bat eye Also careful disassembly sembly easy warp bind brass liner Sometimes very difficult de tect especially piston sleeve assembly set up tight side Most ills caused low yield strength brass Another negative factor working against ABC piston sleeve assembly least us very difficult get exact running fit looking am blowing smoke tell possible pick up 1000 2000 rpms over average ABC assem bly get exact fit runs best Because nature alloys used would turn gray waited around fits run start trying lap hone fits after better have time patience knowledge money will make mistakes mistakes cost money involved heart engine Ah once get fit want can sit back enjoy because silicone chrome start work favor will take leaner runs plug elements hotter fuel its counterparts barring major difficulties extremely lean runs extremely hot fuel piston sleeve should last entire speed sea son Brent has used ST X-15 piston sleeve assembly since early 1975 right middle 1976 still using same engine same piston sleeve still go ing fast will discuss go about fitting ABCs later Tools want try hand improving performance engine certain tools necessary Contrary popular belief dont need have machine shop full expensive tools extremely knowledgeable engines improve performance average production engine However certain amount equipment common sense necessary might well build yourself good strong running bench build buy metal running mount bench because going spend hours bending over hot loudrunning engine also need good ac curate tachometer Believe have used stroboscope sound tach reed tach light tach direct-drive tach perfer good expensive direct drive tach over rest because easy read portable important de pendable am sorry say light tachs very dependable strongly recommend seriously want improve performance equip yourself good dependable direct-drive tach ometer An electric starter must will starting restarting hot cranky engines hand starting hot cranky high performance engine can impos sible compare engines need measuring instruments depth microm eter measure head piston clearance must also important have 0to-l micrometer 0-to-6 dial vernier caliper use both what going try accomplish article recommend good 0-to-6 dial vernier caliper versatile faster patience can learn use al accurately micrometers can now record performance compare parts feeler gauge setting rotor clearance also handy use Xacto knife old blade deburring parts removing flash castings good cleaning fluid necessary light weight machine oil protect clean parts oxidation useful time time will want alter production piston cylinder fit recommend least inexperienced person done lap ping use 1200-grit carborundum and/ white Dupont #7 polishing compound Dupont fl7 water soluble reason recommend Other above mentioned cant think anything else will need degree wheel check timing can very informative equipment properly alter sleeve timing necessary will necessary able move head engine smaller increments stock gaskets suggest make several gaskets differ ent sizes shim stock play head clearance point making gaskets 200 300 time out 003 shim brass inconvenienced build ing engines Custom-built thin 003 head gaskets sleeve shims available 0putar demaOUlhIUVIOIEB rLYI NOW AVAILABLE hetsIOStruciioas build 2 ig planOBIRD Stable tue tIre jamausY buildS last loam arid balsa _____ tlyer 3 cbaIO1 Send name address 6flenqroacliecIr ormotOESES zip 51050YARD BIRD 941 SHERWOOD DR LA GRANGE PARK ILLINOIS 0ii525 September 1976 81
Edition: Model Aviation - 1976/09
Page Numbers: 26, 80, 81
Bud Akinson ONE OF THE UNIQUE problems scratch scale builders have find canopy already manufactured will adapt particular scale project course standard P-51 P-47 etc usually advertised WW-lI canopies Sig has several such canopies So other manufacturers course WW-II airplanes dont use standard bubble-type canopies such Axis air forces along own Navy aircraft course air craft 30s So next best thing to make own Im sure us have tried too much luck Practically commercially made canopies vacuum formed requires special equipment consider able work just make two cano pies hope explain easy method have found requires little no spe cial equipment minimum work First off draw out canopy three-view plan find better make canopy plug fuse under construction cabin cockpit cut out formed plug may kind wood prefer balsa because its easy work usually scraps around construct plug because canopies large need too much wood plug Re member make plug little longer needed can trim fit prop erly sure sand plug fine paper scratches dents will transmit themselves canopy need finish paint plug using method Next drill hole bottom plug /2 in diameter glue 6or 7-in dowl glue dry secure ready form canopy Place plug dowel vise plug raised 4 5 jaws Secure tightly because will apply con siderable pressure pulling can opy Most hobby shops carry clear plastic butyrate sheets Sig has several thicknesses sizes $150 $250 sheet Cut butyrate sheet about twice size canopy will need hang-over hold Next step heat butyrate have found simple bathroom electric heater works well better say oven heat butyrate oven re quires form lot trouble dont have small bathroom heater check garage sales like picked up $200 Remove protection screen can easily heat butyrate sheet Cut butyrate sheet about 50% larger canopy able get good grip also heat center canopy trick have right amount heat continued page 80 Bottom Electric drilllower left corneras used Mint Julep meet rotate table Set up assist scale judges Model STA Ryan constructed Sig kit Dinset Fowler 26 Model Aviation Scale / Below Balsa plug used molding plastic canopy described text mounted sturdy dowel can clamped vise Above Wearing gloves pliable hot plastic butyrate pulled down quickly over balsa plug sure wear heavy gloves Below After trimming canopy shown stalled Macchi C-202 fighter scale model ship used Italians WW II Tercel continued mild fuel 10% nitro less 0008 diameter stranded lines up 52 ft can used cables available Sig Pylon cannot obtain lines dealer X-Cell Models Inc 347 Eastland Shopping Center Lexington KY 40505 can contacted prices availability Flying models new experience have booming horsepower larger competition models line tension considerably less However ro tational speed 45- 50-ft lines about same larger models Tercel can useful tool sharpen re conditions fuels exact ignition specifications particular glow plug Its easy-toread 0-10 amp ammeter shows precise power output will tell glance plug good engine flooded self-contained 2 volt battery may recharged over 150 times has fully charged rating 5 ampere hours peak power 200 watts circuitry safety fused 2 diameter highimpact polypropylene case has fluted base convenient han dling have add lead wires plug connector choice color-coded labeled terminals Buy GloBee Fire Plug hobby dealer today oy years fast reliable engine starts perfectly matched special requirements flexes its response very quick have yet looked up Ter cel male hawk particular pere grine falcon interested Control Line Precision Aerobatics want keep formed latest happenings competition scene should consider joining Precision Aerobatics Model Pilots Association dedicated promotion CL Precision Aerobatics Annual dues membership cludes monthly newsletter $600 care Wynn Paul 1630 Maywick Dr Lexington KY 40504 address Keith Trostle 10900 Phillips Dr Upper Marlboro MD 20870 DIVISION OF EMERSON ELECTRIC CO 6000 Fernview Ave Cincinnati Ohio 45212 RC Scale/Atkinson continued page 26 Using good pair gloves place butyrate sheet about 4 heating element slowly move back forth until plastic becomes pliable starts sag also should start smoke Im mediately remove heat lay over plug vise carefully center ing same time very firmly pull straight down over plug must done very quickly plastic will cool quickly around outer edges will distort form plug Hold several minutes cool let set about 10 mm until completely cooled Remove trim suit rea son canopy does come out right may reheat plastic sheet will slowly resume its original shape Its im portant its hot enough care should taken get too hot because canopy will distort clear may want try sample run before form ing canopy Trimming may painted use trim tape prepainted masking tape cut small strips three pictures show steps complete canopy items may formed manner such gun turrets gun bubbles lights etc time writing have just re turned 4th Annual Mint Julep R/C Meet Rough River Park Ken tucky has finest scale meets country Facilities superb Setting rolling hills north cen tral Kentucky lovely park lake facilities about 2500 ft black-top runway fly state Kentuckys Park Dept co-sponsor contest novelty itself certainly need help cooperation such parks governing bodies Kentucky Park Commission highly commended fine help further interest RC sport hobby flaw meet poor cooperation weather man rained off both Saturday Sun day Still flyable weather although wind little across runway Im afraid heavy rain cold weather Friday night may have kept some contest ants attending Although quan tity down quality evident both static flying attend ance three multi-engine stand-offs two Aerocommanders B-25 variety aircraft truly made up lower number scale models seen past years interesting innovations static turntable slowly rotated give judges really good look model table about 4 ft diameter stood about 2 ft ground gave judges chance see undercarriage plainly well underbelly model table could turned slowly use electric drill large dowel running turn 80 Model Aviation Fire Plug. optimum starting power need power source youll need years glow plug lights new GloBee Fire Plug GloBee Fire Plug igniterits completely inte grated glow plug starting system Its easy-to-operate rheostat con trol lever provides optimum current match weather table use rheostat speed could controlled unique judging table cost very little make Dale Arvin crew com mended excellent effort stand off scale Mint Julep Meet handing out bouquets always tireless effort Doug Early helpers should mentioned Several clubs worked together put fine meet have never attended Munt Julep Meet have missed largest finest Try make next year address 734 N 6th St Terrace Blue Springs MO 64015 CL Speed/Bussell continued page 33 simple terms means takes ex actly e distort brass takes distort mild steel dont have compare tensile yield modulus elasticity strengths free machining brass mild steel very long before realiz ing brass nearly strong reason others should obvious brass cylinder liners should thicker ones made steel Up now production engine manufac turers have taken consideration Brass will take little no abuse would-be engine reworker can bend brass liner use force r loving crankcase casting quicker can bat eye Also careful disassembly sembly easy warp bind brass liner Sometimes very difficult de tect especially piston sleeve assembly set up tight side Most ills caused low yield strength brass Another negative factor working against ABC piston sleeve assembly least us very difficult get exact running fit looking am blowing smoke tell possible pick up 1000 2000 rpms over average ABC assem bly get exact fit runs best Because nature alloys used would turn gray waited around fits run start trying lap hone fits after better have time patience knowledge money will make mistakes mistakes cost money involved heart engine Ah once get fit want can sit back enjoy because silicone chrome start work favor will take leaner runs plug elements hotter fuel its counterparts barring major difficulties extremely lean runs extremely hot fuel piston sleeve should last entire speed sea son Brent has used ST X-15 piston sleeve assembly since early 1975 right middle 1976 still using same engine same piston sleeve still go ing fast will discuss go about fitting ABCs later Tools want try hand improving performance engine certain tools necessary Contrary popular belief dont need have machine shop full expensive tools extremely knowledgeable engines improve performance average production engine However certain amount equipment common sense necessary might well build yourself good strong running bench build buy metal running mount bench because going spend hours bending over hot loudrunning engine also need good ac curate tachometer Believe have used stroboscope sound tach reed tach light tach direct-drive tach perfer good expensive direct drive tach over rest because easy read portable important de pendable am sorry say light tachs very dependable strongly recommend seriously want improve performance equip yourself good dependable direct-drive tach ometer An electric starter must will starting restarting hot cranky engines hand starting hot cranky high performance engine can impos sible compare engines need measuring instruments depth microm eter measure head piston clearance must also important have 0to-l micrometer 0-to-6 dial vernier caliper use both what going try accomplish article recommend good 0-to-6 dial vernier caliper versatile faster patience can learn use al accurately micrometers can now record performance compare parts feeler gauge setting rotor clearance also handy use Xacto knife old blade deburring parts removing flash castings good cleaning fluid necessary light weight machine oil protect clean parts oxidation useful time time will want alter production piston cylinder fit recommend least inexperienced person done lap ping use 1200-grit carborundum and/ white Dupont #7 polishing compound Dupont fl7 water soluble reason recommend Other above mentioned cant think anything else will need degree wheel check timing can very informative equipment properly alter sleeve timing necessary will necessary able move head engine smaller increments stock gaskets suggest make several gaskets differ ent sizes shim stock play head clearance point making gaskets 200 300 time out 003 shim brass inconvenienced build ing engines Custom-built thin 003 head gaskets sleeve shims available 0putar demaOUlhIUVIOIEB rLYI NOW AVAILABLE hetsIOStruciioas build 2 ig planOBIRD Stable tue tIre jamausY buildS last loam arid balsa _____ tlyer 3 cbaIO1 Send name address 6flenqroacliecIr ormotOESES zip 51050YARD BIRD 941 SHERWOOD DR LA GRANGE PARK ILLINOIS 0ii525 September 1976 81
Edition: Model Aviation - 1976/09
Page Numbers: 26, 80, 81
Bud Akinson ONE OF THE UNIQUE problems scratch scale builders have find canopy already manufactured will adapt particular scale project course standard P-51 P-47 etc usually advertised WW-lI canopies Sig has several such canopies So other manufacturers course WW-II airplanes dont use standard bubble-type canopies such Axis air forces along own Navy aircraft course air craft 30s So next best thing to make own Im sure us have tried too much luck Practically commercially made canopies vacuum formed requires special equipment consider able work just make two cano pies hope explain easy method have found requires little no spe cial equipment minimum work First off draw out canopy three-view plan find better make canopy plug fuse under construction cabin cockpit cut out formed plug may kind wood prefer balsa because its easy work usually scraps around construct plug because canopies large need too much wood plug Re member make plug little longer needed can trim fit prop erly sure sand plug fine paper scratches dents will transmit themselves canopy need finish paint plug using method Next drill hole bottom plug /2 in diameter glue 6or 7-in dowl glue dry secure ready form canopy Place plug dowel vise plug raised 4 5 jaws Secure tightly because will apply con siderable pressure pulling can opy Most hobby shops carry clear plastic butyrate sheets Sig has several thicknesses sizes $150 $250 sheet Cut butyrate sheet about twice size canopy will need hang-over hold Next step heat butyrate have found simple bathroom electric heater works well better say oven heat butyrate oven re quires form lot trouble dont have small bathroom heater check garage sales like picked up $200 Remove protection screen can easily heat butyrate sheet Cut butyrate sheet about 50% larger canopy able get good grip also heat center canopy trick have right amount heat continued page 80 Bottom Electric drilllower left corneras used Mint Julep meet rotate table Set up assist scale judges Model STA Ryan constructed Sig kit Dinset Fowler 26 Model Aviation Scale / Below Balsa plug used molding plastic canopy described text mounted sturdy dowel can clamped vise Above Wearing gloves pliable hot plastic butyrate pulled down quickly over balsa plug sure wear heavy gloves Below After trimming canopy shown stalled Macchi C-202 fighter scale model ship used Italians WW II Tercel continued mild fuel 10% nitro less 0008 diameter stranded lines up 52 ft can used cables available Sig Pylon cannot obtain lines dealer X-Cell Models Inc 347 Eastland Shopping Center Lexington KY 40505 can contacted prices availability Flying models new experience have booming horsepower larger competition models line tension considerably less However ro tational speed 45- 50-ft lines about same larger models Tercel can useful tool sharpen re conditions fuels exact ignition specifications particular glow plug Its easy-toread 0-10 amp ammeter shows precise power output will tell glance plug good engine flooded self-contained 2 volt battery may recharged over 150 times has fully charged rating 5 ampere hours peak power 200 watts circuitry safety fused 2 diameter highimpact polypropylene case has fluted base convenient han dling have add lead wires plug connector choice color-coded labeled terminals Buy GloBee Fire Plug hobby dealer today oy years fast reliable engine starts perfectly matched special requirements flexes its response very quick have yet looked up Ter cel male hawk particular pere grine falcon interested Control Line Precision Aerobatics want keep formed latest happenings competition scene should consider joining Precision Aerobatics Model Pilots Association dedicated promotion CL Precision Aerobatics Annual dues membership cludes monthly newsletter $600 care Wynn Paul 1630 Maywick Dr Lexington KY 40504 address Keith Trostle 10900 Phillips Dr Upper Marlboro MD 20870 DIVISION OF EMERSON ELECTRIC CO 6000 Fernview Ave Cincinnati Ohio 45212 RC Scale/Atkinson continued page 26 Using good pair gloves place butyrate sheet about 4 heating element slowly move back forth until plastic becomes pliable starts sag also should start smoke Im mediately remove heat lay over plug vise carefully center ing same time very firmly pull straight down over plug must done very quickly plastic will cool quickly around outer edges will distort form plug Hold several minutes cool let set about 10 mm until completely cooled Remove trim suit rea son canopy does come out right may reheat plastic sheet will slowly resume its original shape Its im portant its hot enough care should taken get too hot because canopy will distort clear may want try sample run before form ing canopy Trimming may painted use trim tape prepainted masking tape cut small strips three pictures show steps complete canopy items may formed manner such gun turrets gun bubbles lights etc time writing have just re turned 4th Annual Mint Julep R/C Meet Rough River Park Ken tucky has finest scale meets country Facilities superb Setting rolling hills north cen tral Kentucky lovely park lake facilities about 2500 ft black-top runway fly state Kentuckys Park Dept co-sponsor contest novelty itself certainly need help cooperation such parks governing bodies Kentucky Park Commission highly commended fine help further interest RC sport hobby flaw meet poor cooperation weather man rained off both Saturday Sun day Still flyable weather although wind little across runway Im afraid heavy rain cold weather Friday night may have kept some contest ants attending Although quan tity down quality evident both static flying attend ance three multi-engine stand-offs two Aerocommanders B-25 variety aircraft truly made up lower number scale models seen past years interesting innovations static turntable slowly rotated give judges really good look model table about 4 ft diameter stood about 2 ft ground gave judges chance see undercarriage plainly well underbelly model table could turned slowly use electric drill large dowel running turn 80 Model Aviation Fire Plug. optimum starting power need power source youll need years glow plug lights new GloBee Fire Plug GloBee Fire Plug igniterits completely inte grated glow plug starting system Its easy-to-operate rheostat con trol lever provides optimum current match weather table use rheostat speed could controlled unique judging table cost very little make Dale Arvin crew com mended excellent effort stand off scale Mint Julep Meet handing out bouquets always tireless effort Doug Early helpers should mentioned Several clubs worked together put fine meet have never attended Munt Julep Meet have missed largest finest Try make next year address 734 N 6th St Terrace Blue Springs MO 64015 CL Speed/Bussell continued page 33 simple terms means takes ex actly e distort brass takes distort mild steel dont have compare tensile yield modulus elasticity strengths free machining brass mild steel very long before realiz ing brass nearly strong reason others should obvious brass cylinder liners should thicker ones made steel Up now production engine manufac turers have taken consideration Brass will take little no abuse would-be engine reworker can bend brass liner use force r loving crankcase casting quicker can bat eye Also careful disassembly sembly easy warp bind brass liner Sometimes very difficult de tect especially piston sleeve assembly set up tight side Most ills caused low yield strength brass Another negative factor working against ABC piston sleeve assembly least us very difficult get exact running fit looking am blowing smoke tell possible pick up 1000 2000 rpms over average ABC assem bly get exact fit runs best Because nature alloys used would turn gray waited around fits run start trying lap hone fits after better have time patience knowledge money will make mistakes mistakes cost money involved heart engine Ah once get fit want can sit back enjoy because silicone chrome start work favor will take leaner runs plug elements hotter fuel its counterparts barring major difficulties extremely lean runs extremely hot fuel piston sleeve should last entire speed sea son Brent has used ST X-15 piston sleeve assembly since early 1975 right middle 1976 still using same engine same piston sleeve still go ing fast will discuss go about fitting ABCs later Tools want try hand improving performance engine certain tools necessary Contrary popular belief dont need have machine shop full expensive tools extremely knowledgeable engines improve performance average production engine However certain amount equipment common sense necessary might well build yourself good strong running bench build buy metal running mount bench because going spend hours bending over hot loudrunning engine also need good ac curate tachometer Believe have used stroboscope sound tach reed tach light tach direct-drive tach perfer good expensive direct drive tach over rest because easy read portable important de pendable am sorry say light tachs very dependable strongly recommend seriously want improve performance equip yourself good dependable direct-drive tach ometer An electric starter must will starting restarting hot cranky engines hand starting hot cranky high performance engine can impos sible compare engines need measuring instruments depth microm eter measure head piston clearance must also important have 0to-l micrometer 0-to-6 dial vernier caliper use both what going try accomplish article recommend good 0-to-6 dial vernier caliper versatile faster patience can learn use al accurately micrometers can now record performance compare parts feeler gauge setting rotor clearance also handy use Xacto knife old blade deburring parts removing flash castings good cleaning fluid necessary light weight machine oil protect clean parts oxidation useful time time will want alter production piston cylinder fit recommend least inexperienced person done lap ping use 1200-grit carborundum and/ white Dupont #7 polishing compound Dupont fl7 water soluble reason recommend Other above mentioned cant think anything else will need degree wheel check timing can very informative equipment properly alter sleeve timing necessary will necessary able move head engine smaller increments stock gaskets suggest make several gaskets differ ent sizes shim stock play head clearance point making gaskets 200 300 time out 003 shim brass inconvenienced build ing engines Custom-built thin 003 head gaskets sleeve shims available 0putar demaOUlhIUVIOIEB rLYI NOW AVAILABLE hetsIOStruciioas build 2 ig planOBIRD Stable tue tIre jamausY buildS last loam arid balsa _____ tlyer 3 cbaIO1 Send name address 6flenqroacliecIr ormotOESES zip 51050YARD BIRD 941 SHERWOOD DR LA GRANGE PARK ILLINOIS 0ii525 September 1976 81