AN UPDATE toad may remem ber April issue wrote about Paul Vergers attempts detoad unsatisfactory airplane using magic Futaba 1024 Paul didnt end up princehe toad life support Well Paul called report breakthrough seems Nat Penton deQuincy LA heard about struggle detoad airplane called offer services Paul Verger has popularized Nats reputation high priest voodoo aerodynamics column KFactor Remember Thats newsletter NSRCA Anyway Nat figured problem right up alley listened symp toms said hed get back detoading team Paul Mike Hayden Jim Fife Nat later called Mike Hayden toad told him drop wing leading edge % think give engine additional 1 0 downthrust problem weird pitching characteristics would alleviated Mike figured nothing lose made changes subsequent tests proved voodoo priest knew what talking about Accord ing Paul changes flying characteris tics remarkable didnt turn toad prince Paul figures its least duke now point above airplane can often fixed doesnt fly perfectly right off board fact top-level pi lots will tell job getting airplane fly properly takes about long building airplane Some pilots never stop tinkering airplanes have trimming secrets heads dont realize black magic rest us wish could have memory dump trimming secrets top fliers book goodies would best-seller among Pattern pilots Id buy Did ever shoot yourself down friend confessed hed done quite trick wonder hasnt happened before Lets call guy Jack because need name tell real name probably wont friend longer seems Jack Out flying field great afternoon flying Kwik Fli yes Phil Krafts old designs relaxing after several flights watched another flier lets call him Billtry start engine airplane no avail After minutes frus tration Bills part Jack offered Bill air plane fly Bill accepted offer soon Jacks Kwik Fli up air Jack thought about time Bill land plane Jack went over other airplane flight line prepare flight Thinking Bill surely landed first air plane time took him fuel up second switched transmitter check controls Bill yelled dont have went Jacks first airplane now youve figured out both Jacks transmitters same frequency hed just shot himself down have two radios same frequency Have ever mixed transmitters Did get away have two PCM radios same frequency will changed couple people would like some information first needs some parts HB 60 cant find source under stand plans produce HB engines country now no longer being produced overseas dont know what plans production Please let know can pass word others may need HB parts Editors note RIL dustries PO Box 5 Sierra Madre CA 91025 tel 1-818/359-0016 has parts service HB enginesand others See ad issue RMcM second request information name reliable source YS 60 parts know flier would like crankshaft rear-ex haust YS 60 others would probably welcome name source keeps YS 60 parts stock Flash just discovered Sham rock Competition Imports Inc New Orleans LA has YSFutaba parts See ad magazine recently received two kits via Model Avia tion editorial offices sent kit manufacturers Obviously would like have glowing reviews products feel due fair review Since have too little 44 Model Aviation Radio Control Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32548 Nat Penton unusual Express design Pattern piane pages beforein Juiy 89 issue high priest voodoo aerodynamics turned Paui Vergers toad eec Van Puttes Aprii 89 column much better flying Pattern plane some simple changes planes alignment story what did revealed month Bob Barclay Las Vegas NV won Mas ters class 89 Nats beautiful rendition Bob Hansons Runabout Colors red/whitelbiacklyeilow Paul Verger plc Author Ron Van Putte shook dust off old retired sport plane relearned reason sealing gap between wing ailerons tells us about column time keep Pattern fleet going task building airplanes awarded two local fliers document kit construction narratives pictures Well meet fly ing field test hope Ill have two kit reviews couple months Last fall bought pair Safety Plus glasses try can now report really like contests Gulf Coast have run ways oriented north-south Virtually sites set up fliers stand west side runway means Satur day Sunday mornings fields real test fliers tolerance blinding sun Ive seen fliers lose alrplanes being able see after crossed sun past occasions have used two sets sunglasses stacked top other try block out sun Enter Safety Plus glasses type bought ate called Mirror same Gray mirrored above below center strip enables flier tuck sun up i0 part upper mirrored section dramatical ly cut down effects brilliance supposed block ultraviolet radiation true safety glasses protection agalnst haz ards like debris thrown up propeller also come nice carrying case Take look Safety Plus ad right Model Aviation can get through local hobby dealer Ace RIC Inc can also use Safety Plus toll-free 800 number order di rect like wont use anything else now Ive found Theres bonus safety aspects hadnt thought about before trying have louvered wraparound frame cuts down effects wind ordinary glasses eyes would tear wind blew side due venturi ef fect glasses caused Id end up Pattern flight tears streaming down face Most tears due wind poor fly ing Ron Ellis editor Florida Pattern Asso ciation newsletter gave set homemade wind blockers slip bows Continued page 1S6 away wasted tie straps isolate tuned pipe perfect compliment soft mounted engine Easy use Large 60 size tuned pipes can make airplane QUIET Soft mount engine easiest & effective way VIBRA-DAMP VIBRA-DAMP BEAMS & VIBRA-DAMP ALUM TABS UNIVERSAL 2-cycle engines 20 61. everything included mounting PERFORMANCE PRODUCTS UNLIMITED 7093 E Dodge Rd Mt Moms Mi 48458- Phone Orders 313631-4894-Visa/MG accept SILENT ST Length 64Span 69 WIng Area 844 sq Suitable AMA/FAI Pattern Flying kit BasiC Kit $180 Semi-built Kit $325 features high quality epoxy glass fuiage Also available Miss Beetle & BETLE & balsa foam wing construction Mqnufactured PAtTERN TEK 320-H Turtle Greek Cf San Jose CA 96125 Tel 408298-P31 1 FAX 408298-6538 PO BOX 26 NORWOOD NJ 07648 914-429-3484 Special Introductory Price List Price *155 June 1990 45 HUSH-CLAMP Ron sold benefits Safety Pius glasses after buying using mirror type Pattern flight early morning facing toward sun less intimidat ing now information column Hobby oro wrucs aad $50 mnppeng FULL BODY PILOT KIT DARNED GOOD AIRMEN Contains pilot head hands boots helmet Lightest pilots available Lifelike vinyl latex rubbercap goggles full templates easy instruc- tions Easy assemble finish Some simple sewing required Fully Build Sportsman Barnstormer Full Body Bust ositionable too BUST PILOT KIT Price Contains pilot head helmet sport cap goggles#206 acae895 jacket Easy assemble finish#205 scae995 PrIce#204 scae095 #108-iA scale NEW 595#203 acae695 #106-/ scale695 #105-% scale. 795 SinS-lA scale. 895Some 1495 ewing quired SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S074S& 09S ALL CUS TOM & STOCK PARTS VAILABLE INDIWDUALL V COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HARD-TO-FIND HARDWARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOY SR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLA TES & EPOXIES JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less oz Price #308- scale 595 #307- scale 695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog Radio Technique/Myers Continued page 119 Whatever suppose inspires club skeptic doubt people out eyeing Aircraft Only unused chan nels trying figure out take away us Lets say local skeptic says So What OK point out him reason wants keep channels forever can continue use obsolete equipment will see interference anybody else using odd-numbered channels So keep ing fellow RCers off odd-numbered channels doesnt protect old junk just gives away hobby channels forever thinking presents same risks us does boaters RC Aerobatics/Van Putte Continued page 45 regular sunglasses Safety Plus glasses dont need use Rons thoughtful gift rediscovered something recently deserves passed Since Im between Pattern air planes right now wanted some flying during judges training sessions clubs annual Pattern contest decided prepare old sport airplane fly airplane hadnt flown several years aileron-to-wing gap sealed normally seal aileronwing gap Pattern airplanes con sciously reflect Well first tempt Pattern flight sport airplane re minded gap should sealed After flight judges commenting jerkiness constant corrections observed roll axis during looping ma neuvers airplane Bingo hit reason seal aileron-wing gap leaks air Sometimes gap leaks both wings other times leaks wing necessarily same wing time causes airplane unstable roll dur ing loops since wing leaking gap loses lift Lesson relearned Seal aileron-wing gap stability roll during looping maneuvers RC Slope Soaring/Triebes Continued page 49 run-of-the-mill 6-ft-span kippers attempt quantify its F3F performSee Dealer add Dol dit-ect order handling ance group us have conducted trial over F3F course local slope typically Brit ish Slope weather ie some good air some bad air etc results show B3 bit good D3 won Viking Cup event Derbyshire 1987 have maintained unbeaten record domestic F3F competitions nearly two years new model particularly suited reversal tech nique unusual amongst F3F fliers has certainly proved effective especially steep lift gradients Airfoil design testing debate over what airfoil best use given set condi tions has existed long airplanes have flying certain airfoil may have particular ad vantages low speed may also have some definite disadvantages high-speed flight An other airfoil might just opposite being ideally suited high-speed work Yet another may compromise between two work fairly well conditions However look now have virtu ally endless list airfoils choose can get exact performance parameters looking Much recent work airfoil design US has done Michael Selig John Donovan results testing have sparked what seems endless debate accuracy airfoil testing its application real wings Im going go intricate de tails criticism testing has elicited short explanation testing techniques re sults Selig Donovan another member airfoil research team David Fraser Heres what Michael John David say June issue Slope Soaring News article 5D6060 article quite informative few points need amplification couple wrong Im hoping can clarify points First statement [Reynolds number] refers number air molecules flowing across wing Simply put larger number air flows over wing correct Reynolds number usually abbreviated R Re Rn measure ratio inertial forces fluid air example viscous forces Osborne Reynolds hydraulics engi neer England late 1800s investi gating flow characteristics channels pipes discovered dynamics flow dependent size speed provided certain quantitynow called Reynolds numberwas held constant 156 Model Aviation OUR REV-UP INVENTORY VERA GES OVER 9000 PROPS I! IMMEDIATE SHIPMENT ON VISAIMC ORDER BY MAIL OR PHONE 519 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $200 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HAS
Edition: Model Aviation - 1990/06
Page Numbers: 44, 45, 156
AN UPDATE toad may remem ber April issue wrote about Paul Vergers attempts detoad unsatisfactory airplane using magic Futaba 1024 Paul didnt end up princehe toad life support Well Paul called report breakthrough seems Nat Penton deQuincy LA heard about struggle detoad airplane called offer services Paul Verger has popularized Nats reputation high priest voodoo aerodynamics column KFactor Remember Thats newsletter NSRCA Anyway Nat figured problem right up alley listened symp toms said hed get back detoading team Paul Mike Hayden Jim Fife Nat later called Mike Hayden toad told him drop wing leading edge % think give engine additional 1 0 downthrust problem weird pitching characteristics would alleviated Mike figured nothing lose made changes subsequent tests proved voodoo priest knew what talking about Accord ing Paul changes flying characteris tics remarkable didnt turn toad prince Paul figures its least duke now point above airplane can often fixed doesnt fly perfectly right off board fact top-level pi lots will tell job getting airplane fly properly takes about long building airplane Some pilots never stop tinkering airplanes have trimming secrets heads dont realize black magic rest us wish could have memory dump trimming secrets top fliers book goodies would best-seller among Pattern pilots Id buy Did ever shoot yourself down friend confessed hed done quite trick wonder hasnt happened before Lets call guy Jack because need name tell real name probably wont friend longer seems Jack Out flying field great afternoon flying Kwik Fli yes Phil Krafts old designs relaxing after several flights watched another flier lets call him Billtry start engine airplane no avail After minutes frus tration Bills part Jack offered Bill air plane fly Bill accepted offer soon Jacks Kwik Fli up air Jack thought about time Bill land plane Jack went over other airplane flight line prepare flight Thinking Bill surely landed first air plane time took him fuel up second switched transmitter check controls Bill yelled dont have went Jacks first airplane now youve figured out both Jacks transmitters same frequency hed just shot himself down have two radios same frequency Have ever mixed transmitters Did get away have two PCM radios same frequency will changed couple people would like some information first needs some parts HB 60 cant find source under stand plans produce HB engines country now no longer being produced overseas dont know what plans production Please let know can pass word others may need HB parts Editors note RIL dustries PO Box 5 Sierra Madre CA 91025 tel 1-818/359-0016 has parts service HB enginesand others See ad issue RMcM second request information name reliable source YS 60 parts know flier would like crankshaft rear-ex haust YS 60 others would probably welcome name source keeps YS 60 parts stock Flash just discovered Sham rock Competition Imports Inc New Orleans LA has YSFutaba parts See ad magazine recently received two kits via Model Avia tion editorial offices sent kit manufacturers Obviously would like have glowing reviews products feel due fair review Since have too little 44 Model Aviation Radio Control Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32548 Nat Penton unusual Express design Pattern piane pages beforein Juiy 89 issue high priest voodoo aerodynamics turned Paui Vergers toad eec Van Puttes Aprii 89 column much better flying Pattern plane some simple changes planes alignment story what did revealed month Bob Barclay Las Vegas NV won Mas ters class 89 Nats beautiful rendition Bob Hansons Runabout Colors red/whitelbiacklyeilow Paul Verger plc Author Ron Van Putte shook dust off old retired sport plane relearned reason sealing gap between wing ailerons tells us about column time keep Pattern fleet going task building airplanes awarded two local fliers document kit construction narratives pictures Well meet fly ing field test hope Ill have two kit reviews couple months Last fall bought pair Safety Plus glasses try can now report really like contests Gulf Coast have run ways oriented north-south Virtually sites set up fliers stand west side runway means Satur day Sunday mornings fields real test fliers tolerance blinding sun Ive seen fliers lose alrplanes being able see after crossed sun past occasions have used two sets sunglasses stacked top other try block out sun Enter Safety Plus glasses type bought ate called Mirror same Gray mirrored above below center strip enables flier tuck sun up i0 part upper mirrored section dramatical ly cut down effects brilliance supposed block ultraviolet radiation true safety glasses protection agalnst haz ards like debris thrown up propeller also come nice carrying case Take look Safety Plus ad right Model Aviation can get through local hobby dealer Ace RIC Inc can also use Safety Plus toll-free 800 number order di rect like wont use anything else now Ive found Theres bonus safety aspects hadnt thought about before trying have louvered wraparound frame cuts down effects wind ordinary glasses eyes would tear wind blew side due venturi ef fect glasses caused Id end up Pattern flight tears streaming down face Most tears due wind poor fly ing Ron Ellis editor Florida Pattern Asso ciation newsletter gave set homemade wind blockers slip bows Continued page 1S6 away wasted tie straps isolate tuned pipe perfect compliment soft mounted engine Easy use Large 60 size tuned pipes can make airplane QUIET Soft mount engine easiest & effective way VIBRA-DAMP VIBRA-DAMP BEAMS & VIBRA-DAMP ALUM TABS UNIVERSAL 2-cycle engines 20 61. everything included mounting PERFORMANCE PRODUCTS UNLIMITED 7093 E Dodge Rd Mt Moms Mi 48458- Phone Orders 313631-4894-Visa/MG accept SILENT ST Length 64Span 69 WIng Area 844 sq Suitable AMA/FAI Pattern Flying kit BasiC Kit $180 Semi-built Kit $325 features high quality epoxy glass fuiage Also available Miss Beetle & BETLE & balsa foam wing construction Mqnufactured PAtTERN TEK 320-H Turtle Greek Cf San Jose CA 96125 Tel 408298-P31 1 FAX 408298-6538 PO BOX 26 NORWOOD NJ 07648 914-429-3484 Special Introductory Price List Price *155 June 1990 45 HUSH-CLAMP Ron sold benefits Safety Pius glasses after buying using mirror type Pattern flight early morning facing toward sun less intimidat ing now information column Hobby oro wrucs aad $50 mnppeng FULL BODY PILOT KIT DARNED GOOD AIRMEN Contains pilot head hands boots helmet Lightest pilots available Lifelike vinyl latex rubbercap goggles full templates easy instruc- tions Easy assemble finish Some simple sewing required Fully Build Sportsman Barnstormer Full Body Bust ositionable too BUST PILOT KIT Price Contains pilot head helmet sport cap goggles#206 acae895 jacket Easy assemble finish#205 scae995 PrIce#204 scae095 #108-iA scale NEW 595#203 acae695 #106-/ scale695 #105-% scale. 795 SinS-lA scale. 895Some 1495 ewing quired SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S074S& 09S ALL CUS TOM & STOCK PARTS VAILABLE INDIWDUALL V COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HARD-TO-FIND HARDWARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOY SR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLA TES & EPOXIES JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less oz Price #308- scale 595 #307- scale 695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog Radio Technique/Myers Continued page 119 Whatever suppose inspires club skeptic doubt people out eyeing Aircraft Only unused chan nels trying figure out take away us Lets say local skeptic says So What OK point out him reason wants keep channels forever can continue use obsolete equipment will see interference anybody else using odd-numbered channels So keep ing fellow RCers off odd-numbered channels doesnt protect old junk just gives away hobby channels forever thinking presents same risks us does boaters RC Aerobatics/Van Putte Continued page 45 regular sunglasses Safety Plus glasses dont need use Rons thoughtful gift rediscovered something recently deserves passed Since Im between Pattern air planes right now wanted some flying during judges training sessions clubs annual Pattern contest decided prepare old sport airplane fly airplane hadnt flown several years aileron-to-wing gap sealed normally seal aileronwing gap Pattern airplanes con sciously reflect Well first tempt Pattern flight sport airplane re minded gap should sealed After flight judges commenting jerkiness constant corrections observed roll axis during looping ma neuvers airplane Bingo hit reason seal aileron-wing gap leaks air Sometimes gap leaks both wings other times leaks wing necessarily same wing time causes airplane unstable roll dur ing loops since wing leaking gap loses lift Lesson relearned Seal aileron-wing gap stability roll during looping maneuvers RC Slope Soaring/Triebes Continued page 49 run-of-the-mill 6-ft-span kippers attempt quantify its F3F performSee Dealer add Dol dit-ect order handling ance group us have conducted trial over F3F course local slope typically Brit ish Slope weather ie some good air some bad air etc results show B3 bit good D3 won Viking Cup event Derbyshire 1987 have maintained unbeaten record domestic F3F competitions nearly two years new model particularly suited reversal tech nique unusual amongst F3F fliers has certainly proved effective especially steep lift gradients Airfoil design testing debate over what airfoil best use given set condi tions has existed long airplanes have flying certain airfoil may have particular ad vantages low speed may also have some definite disadvantages high-speed flight An other airfoil might just opposite being ideally suited high-speed work Yet another may compromise between two work fairly well conditions However look now have virtu ally endless list airfoils choose can get exact performance parameters looking Much recent work airfoil design US has done Michael Selig John Donovan results testing have sparked what seems endless debate accuracy airfoil testing its application real wings Im going go intricate de tails criticism testing has elicited short explanation testing techniques re sults Selig Donovan another member airfoil research team David Fraser Heres what Michael John David say June issue Slope Soaring News article 5D6060 article quite informative few points need amplification couple wrong Im hoping can clarify points First statement [Reynolds number] refers number air molecules flowing across wing Simply put larger number air flows over wing correct Reynolds number usually abbreviated R Re Rn measure ratio inertial forces fluid air example viscous forces Osborne Reynolds hydraulics engi neer England late 1800s investi gating flow characteristics channels pipes discovered dynamics flow dependent size speed provided certain quantitynow called Reynolds numberwas held constant 156 Model Aviation OUR REV-UP INVENTORY VERA GES OVER 9000 PROPS I! IMMEDIATE SHIPMENT ON VISAIMC ORDER BY MAIL OR PHONE 519 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $200 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HAS
Edition: Model Aviation - 1990/06
Page Numbers: 44, 45, 156
AN UPDATE toad may remem ber April issue wrote about Paul Vergers attempts detoad unsatisfactory airplane using magic Futaba 1024 Paul didnt end up princehe toad life support Well Paul called report breakthrough seems Nat Penton deQuincy LA heard about struggle detoad airplane called offer services Paul Verger has popularized Nats reputation high priest voodoo aerodynamics column KFactor Remember Thats newsletter NSRCA Anyway Nat figured problem right up alley listened symp toms said hed get back detoading team Paul Mike Hayden Jim Fife Nat later called Mike Hayden toad told him drop wing leading edge % think give engine additional 1 0 downthrust problem weird pitching characteristics would alleviated Mike figured nothing lose made changes subsequent tests proved voodoo priest knew what talking about Accord ing Paul changes flying characteris tics remarkable didnt turn toad prince Paul figures its least duke now point above airplane can often fixed doesnt fly perfectly right off board fact top-level pi lots will tell job getting airplane fly properly takes about long building airplane Some pilots never stop tinkering airplanes have trimming secrets heads dont realize black magic rest us wish could have memory dump trimming secrets top fliers book goodies would best-seller among Pattern pilots Id buy Did ever shoot yourself down friend confessed hed done quite trick wonder hasnt happened before Lets call guy Jack because need name tell real name probably wont friend longer seems Jack Out flying field great afternoon flying Kwik Fli yes Phil Krafts old designs relaxing after several flights watched another flier lets call him Billtry start engine airplane no avail After minutes frus tration Bills part Jack offered Bill air plane fly Bill accepted offer soon Jacks Kwik Fli up air Jack thought about time Bill land plane Jack went over other airplane flight line prepare flight Thinking Bill surely landed first air plane time took him fuel up second switched transmitter check controls Bill yelled dont have went Jacks first airplane now youve figured out both Jacks transmitters same frequency hed just shot himself down have two radios same frequency Have ever mixed transmitters Did get away have two PCM radios same frequency will changed couple people would like some information first needs some parts HB 60 cant find source under stand plans produce HB engines country now no longer being produced overseas dont know what plans production Please let know can pass word others may need HB parts Editors note RIL dustries PO Box 5 Sierra Madre CA 91025 tel 1-818/359-0016 has parts service HB enginesand others See ad issue RMcM second request information name reliable source YS 60 parts know flier would like crankshaft rear-ex haust YS 60 others would probably welcome name source keeps YS 60 parts stock Flash just discovered Sham rock Competition Imports Inc New Orleans LA has YSFutaba parts See ad magazine recently received two kits via Model Avia tion editorial offices sent kit manufacturers Obviously would like have glowing reviews products feel due fair review Since have too little 44 Model Aviation Radio Control Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32548 Nat Penton unusual Express design Pattern piane pages beforein Juiy 89 issue high priest voodoo aerodynamics turned Paui Vergers toad eec Van Puttes Aprii 89 column much better flying Pattern plane some simple changes planes alignment story what did revealed month Bob Barclay Las Vegas NV won Mas ters class 89 Nats beautiful rendition Bob Hansons Runabout Colors red/whitelbiacklyeilow Paul Verger plc Author Ron Van Putte shook dust off old retired sport plane relearned reason sealing gap between wing ailerons tells us about column time keep Pattern fleet going task building airplanes awarded two local fliers document kit construction narratives pictures Well meet fly ing field test hope Ill have two kit reviews couple months Last fall bought pair Safety Plus glasses try can now report really like contests Gulf Coast have run ways oriented north-south Virtually sites set up fliers stand west side runway means Satur day Sunday mornings fields real test fliers tolerance blinding sun Ive seen fliers lose alrplanes being able see after crossed sun past occasions have used two sets sunglasses stacked top other try block out sun Enter Safety Plus glasses type bought ate called Mirror same Gray mirrored above below center strip enables flier tuck sun up i0 part upper mirrored section dramatical ly cut down effects brilliance supposed block ultraviolet radiation true safety glasses protection agalnst haz ards like debris thrown up propeller also come nice carrying case Take look Safety Plus ad right Model Aviation can get through local hobby dealer Ace RIC Inc can also use Safety Plus toll-free 800 number order di rect like wont use anything else now Ive found Theres bonus safety aspects hadnt thought about before trying have louvered wraparound frame cuts down effects wind ordinary glasses eyes would tear wind blew side due venturi ef fect glasses caused Id end up Pattern flight tears streaming down face Most tears due wind poor fly ing Ron Ellis editor Florida Pattern Asso ciation newsletter gave set homemade wind blockers slip bows Continued page 1S6 away wasted tie straps isolate tuned pipe perfect compliment soft mounted engine Easy use Large 60 size tuned pipes can make airplane QUIET Soft mount engine easiest & effective way VIBRA-DAMP VIBRA-DAMP BEAMS & VIBRA-DAMP ALUM TABS UNIVERSAL 2-cycle engines 20 61. everything included mounting PERFORMANCE PRODUCTS UNLIMITED 7093 E Dodge Rd Mt Moms Mi 48458- Phone Orders 313631-4894-Visa/MG accept SILENT ST Length 64Span 69 WIng Area 844 sq Suitable AMA/FAI Pattern Flying kit BasiC Kit $180 Semi-built Kit $325 features high quality epoxy glass fuiage Also available Miss Beetle & BETLE & balsa foam wing construction Mqnufactured PAtTERN TEK 320-H Turtle Greek Cf San Jose CA 96125 Tel 408298-P31 1 FAX 408298-6538 PO BOX 26 NORWOOD NJ 07648 914-429-3484 Special Introductory Price List Price *155 June 1990 45 HUSH-CLAMP Ron sold benefits Safety Pius glasses after buying using mirror type Pattern flight early morning facing toward sun less intimidat ing now information column Hobby oro wrucs aad $50 mnppeng FULL BODY PILOT KIT DARNED GOOD AIRMEN Contains pilot head hands boots helmet Lightest pilots available Lifelike vinyl latex rubbercap goggles full templates easy instruc- tions Easy assemble finish Some simple sewing required Fully Build Sportsman Barnstormer Full Body Bust ositionable too BUST PILOT KIT Price Contains pilot head helmet sport cap goggles#206 acae895 jacket Easy assemble finish#205 scae995 PrIce#204 scae095 #108-iA scale NEW 595#203 acae695 #106-/ scale695 #105-% scale. 795 SinS-lA scale. 895Some 1495 ewing quired SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S074S& 09S ALL CUS TOM & STOCK PARTS VAILABLE INDIWDUALL V COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HARD-TO-FIND HARDWARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOY SR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLA TES & EPOXIES JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less oz Price #308- scale 595 #307- scale 695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog Radio Technique/Myers Continued page 119 Whatever suppose inspires club skeptic doubt people out eyeing Aircraft Only unused chan nels trying figure out take away us Lets say local skeptic says So What OK point out him reason wants keep channels forever can continue use obsolete equipment will see interference anybody else using odd-numbered channels So keep ing fellow RCers off odd-numbered channels doesnt protect old junk just gives away hobby channels forever thinking presents same risks us does boaters RC Aerobatics/Van Putte Continued page 45 regular sunglasses Safety Plus glasses dont need use Rons thoughtful gift rediscovered something recently deserves passed Since Im between Pattern air planes right now wanted some flying during judges training sessions clubs annual Pattern contest decided prepare old sport airplane fly airplane hadnt flown several years aileron-to-wing gap sealed normally seal aileronwing gap Pattern airplanes con sciously reflect Well first tempt Pattern flight sport airplane re minded gap should sealed After flight judges commenting jerkiness constant corrections observed roll axis during looping ma neuvers airplane Bingo hit reason seal aileron-wing gap leaks air Sometimes gap leaks both wings other times leaks wing necessarily same wing time causes airplane unstable roll dur ing loops since wing leaking gap loses lift Lesson relearned Seal aileron-wing gap stability roll during looping maneuvers RC Slope Soaring/Triebes Continued page 49 run-of-the-mill 6-ft-span kippers attempt quantify its F3F performSee Dealer add Dol dit-ect order handling ance group us have conducted trial over F3F course local slope typically Brit ish Slope weather ie some good air some bad air etc results show B3 bit good D3 won Viking Cup event Derbyshire 1987 have maintained unbeaten record domestic F3F competitions nearly two years new model particularly suited reversal tech nique unusual amongst F3F fliers has certainly proved effective especially steep lift gradients Airfoil design testing debate over what airfoil best use given set condi tions has existed long airplanes have flying certain airfoil may have particular ad vantages low speed may also have some definite disadvantages high-speed flight An other airfoil might just opposite being ideally suited high-speed work Yet another may compromise between two work fairly well conditions However look now have virtu ally endless list airfoils choose can get exact performance parameters looking Much recent work airfoil design US has done Michael Selig John Donovan results testing have sparked what seems endless debate accuracy airfoil testing its application real wings Im going go intricate de tails criticism testing has elicited short explanation testing techniques re sults Selig Donovan another member airfoil research team David Fraser Heres what Michael John David say June issue Slope Soaring News article 5D6060 article quite informative few points need amplification couple wrong Im hoping can clarify points First statement [Reynolds number] refers number air molecules flowing across wing Simply put larger number air flows over wing correct Reynolds number usually abbreviated R Re Rn measure ratio inertial forces fluid air example viscous forces Osborne Reynolds hydraulics engi neer England late 1800s investi gating flow characteristics channels pipes discovered dynamics flow dependent size speed provided certain quantitynow called Reynolds numberwas held constant 156 Model Aviation OUR REV-UP INVENTORY VERA GES OVER 9000 PROPS I! IMMEDIATE SHIPMENT ON VISAIMC ORDER BY MAIL OR PHONE 519 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $200 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HAS