FREE FLIGHT OLD-TIMERS RECENTLY COMPLETED -scale Pietenpol problem clearing wide firewall muffler solved simply turning cylinder rear K&B Sportster 65 possible because 1 cylinder attached crankcase four bolts square pattern 2 engine Schnuerle ported flat-top pistonthat no baffle piston piston still 900 off moving exhaust side rear right left should done engine yet broken K&B may approve what did because some chance wrist pin fouling exhaust ports bypass ports People have never anything Schnuerle-ported engines might know older engines mostly loop scavenged some sort baffle piston directed incoming fuel/air mixture upward entered cylinder exhaust gas escaped dont want baffle exhaust side cylinder modelers have put together wrong embarrassed find out after much frustration engines would fire run young flew great deal Control Line liked turn exhaust center circle Super Cyclones McCoys could see orange-red fire began get dark bats would start reacting disturbance space Ah simple pleasures youth such engines piston must rotated cylinder either removing connecting rod crankshaft removing wrist pin reassembling piston baffle new bypass side aware connecting rod may have front back side get wrong crankshaft counterweight may damage engines such McCoy rear-intake disk rotary valve models can reassemble engine front rear thereby rotating exhaust Ohlsson Forster engines what have can get far exhaust orientation Ohlsson engines cylinder permanently attached hopefully spot weld crankcase no relocation exhaust direction possible However because contortions necessary insert piston engines using connecting rod handle easy twist wrong direction get baffle wrong side original needle valves leak air severely unless display engines should replaced good such K&B universal needle valve OS needle valve K&B racing needle valve fits McCoy perhaps other racing engines just fine use old needle valves Ohlssons ones have two holes needle valve body holes should oriented across axis intake right angles make plain should look sides intake tube other needle valves know have hole should look straight down intake tube engine wont get good performance things arent right fuel draw will greatly reduced worn leaky needle valve cautious about using electric starter old ignition engines until familiar construction Some engines can seriously damaged designed have load shaft direction other pull propeller reverse load may cause bad things happen such shaft moving aft perhaps thing preventing cam rider can easily lump track connecting rod getting damaged broken have seen crankpin chip metal off rear crankcase cover metal chip entered bypass fouled piston/cylinder liner old engines timers removed converted glow no timer assembly shaft would violently come back crackup hit rear crankcase cover damaging often bending breaking connecting rod Im guilty youth could buy used Ardens Forsters etc about $3 throw away timers gives nightmares remember Campbells Custom Kits 7233 Signature Lane San Antonio TX 78263 Tel [210] 649-3980 9 am-9 pm has new catalog number 18 $3 includes Free Flight things need companys line modern Old-Timer Nostalgia kits Noteworthy extensive line modern Old-Timer Hand-Launched Gliders may have seen ads OK Cub 049 have roots late 1940s-early 1950s engine sent pleased ordered two Its fine sport flying Its competitive later engines such Hornet flies early /2A designs well fewer 200 square inches models size now use TD 020 Cub 049 lots nitro makes fly well would great sport flying engines ordinary fuel model mounts correspond Cox reed valve engines mounting pattern and B models have external fuel tube easy rig timer shutoff Cubs great little engines fun flying OK Engines Box 355 Mohawk NY 13407 Credit card orders accepted charged $5 shipping handling two engines $1495 4March 1998 123 Authors K&B 65 arranged exhaust facing aft muffler Anderson Spitfire 65 Development Super Cyclone perhaps across transverse clearing Pietenpols wide firewall best general-purpose ignition engine Robert Elerman photo