Control Line Racing John Ballard LETS LOOK 21 racing Last year Nationals least two pseudo entries 21 Rat Racing last fall several competitors build little aircraft found nylon store-bought propellers quite satisfactory engines performed well l0o nitro understanding several Midwest con tests year will feature 21 racing old speed colleague Al Stegens Cleveland has sent 21 Fun Speed event flyer contest June 15 Cleveland Fliers utilize 10% nitro solid lines 016 diameter 60 feet long timed seven laps bottom contest cir cular Al wrote An event super human effort would necessary think aptly explains 21 Racing event since little planes time fly ing about 75-80 miles hour pro pellers engines tank accessories certainly have reasonable price tag addition least 10 different 21-size engines could utilized Replacement parts no problem performance/starting ability engines seems good high-performance counterparts know some Racing enthusiasts Dallas/Fort Worth area planning 21-style Racing would certainly inter ested hearing anyone else plan ning contest during 1986 flying season Archives 10cc racing engine old school competitors sent advertisement 1948 magazine believe Air Trails advertises new Black Panther racing engine ad cries out Screaming streak FURY"Vicious diabolical Deadly competitors"Absolutely hottest piece iron ever hit track have never heard engine being called vicious diabolical having $35 price tag understanding engine used race car boats speed planes era brochure goes indicate individual would receive excellent power stamina necessary winning performance dinging hopping up particular powerplant Engine vibrations Scale Racers have several letters commenting problems Racers vibrating high-perfor mance 15 racing engines checking several major competitors find use 3/6-in magnesium plate sandwiched internally profile fuselage carefully drilling holes lighten magnesium use vibration-dampening plate over full frontal area including approximately inch behind leading edge wing care fully mounting plate construction profile body vibration held minimum 1985 Nats several competi tors found themselves engine vibrations just 10% nitro rule required use small high-revving propellers noteworthy competitor improved situation using small X-Acto knife carving out area install additional magnesium mounting plate merely install ing plate 2 3-sec improvement airspeed obtained Also impor tant mount engine 4-40 mounting screws made hardened steel soft ones generally available marketplace During flying season Midwest several contests featuring Half-A Mouse Racing important problem noticed general lack proper marking shorter Mouse Race circle Obviously markings 60-foot circles Rat Scale Racing quite adequate little Mouse Racers circles cases poorly marked series unfortu nate disasters occurred am enclosing picture type flight box Junior Senior competitors use Mouse Racers Competing event seems require great amount glowhead-changing plus availability great number props fuel bulbs other acces sories Keeping hand requires flight kit same items cases Ive seen would serve competitor Rat Scale Racing rate flight kit awfully large compared size model also large enough cumber some move around circles improperly marked very easy competitor land hit flight kit resulting damaged propeller broken wing finishes competition plane day since wing gets smashed tip cannot properly Hot-Stuffed back place confusion pit stop filling little engine-mounted tanks installing proper glow plug attachments messing spring starters etc easy pit crew leave pit box containing ac cessory items flight path other competitors case noticed flight box far circle competitor landed line snagged carrying handle case causing plane wrap lines around pitting box noticed happen ing Open competitors well Juniors Seniors Next month have some plans will share Midwest Sport Racer consolidation various designs have seen flying Midwest consolidation should give very stable decent-flying Sport Racer As always comments appreciated June1986 65 John C Ballard 10102 Kimllewick Dr Louisville KY 40223 pitman carving out groove wooden engine-mounting area can install magnesium plate plate will dampen engine vibration pit box used 1AA Racing competi tors typical Its comparatively huge order hold parapher nalia needed race 21-size profile Rat Racer could also used 21 Speed events Note absence high-tech tank fueling sys tem etc clean attractive design