May 9, 2010
Whats the smallest rc airplane engine out there?
I've recently gotten into the wonderful world of rc. Ive been a model builder for years and now im learning to fly some of the models i build. As most modelers obcess about is making things smaller. II want to stay with nitro, but all the engines i see would be too heavy. Can anyone reccomend a nitro engine that would be very small and still be able to have throttle control?
The smallest engine in regular production was the Cox, .010.
HOWEVER, planes using 1 engine that size are simply too small for RC use, AND the engine did NOT have a throttle that was adjustable in flight. (There WAS an add-on "exhaust" throttle for Cox engines, but it did NOT work well and seriously shortened the life of the engine.)
About the smallest engine capable of flying an RC equipped plane, AND having an "in flight" throttle adjustment is the .15. These are made by various manufacturers.
The OTHER problem is that these smaller planes, (single engine,) can only be flown on very calm days. Even a light breeze can make them uncontrollable, in part due to their light weight.
Aircraft using multiple engines are a different story entirely because while they use a small engine, they use multiple engines and are larger and heavier.
NOTE that there were RC "speed" planes built that did NOT have throttle controls. They simply flew "wide open" at all times. Some were powered by early Jet engines, (the Dynajet), that did NOT have a throttle at all! It ran wide open or not at all, being a pulse-jet.
Filed under RC Model Airplane by Lee

Comments on Whats the smallest rc airplane engine out there? »
the cox 0.10
References :
Hello !
I write from germany ,
when i was a young man i build some " flyingmachines " and all nitro driven. I take always " Cox " engines , it was the littlest was i ever see in serial building.
My idea is : look at ebay for cox engines and take the smallest engine
was built by cox , its named " pee wee " ( if i remember ) she has 0,33
cc !!! and turns maybee 25000 revolutions per minit …
other engines from cox going up to 08 -1,5 cc
have a lot of fun
regards
walt
References :
The smallest engine in regular production was the Cox, .010.
HOWEVER, planes using 1 engine that size are simply too small for RC use, AND the engine did NOT have a throttle that was adjustable in flight. (There WAS an add-on "exhaust" throttle for Cox engines, but it did NOT work well and seriously shortened the life of the engine.)
About the smallest engine capable of flying an RC equipped plane, AND having an "in flight" throttle adjustment is the .15. These are made by various manufacturers.
The OTHER problem is that these smaller planes, (single engine,) can only be flown on very calm days. Even a light breeze can make them uncontrollable, in part due to their light weight.
Aircraft using multiple engines are a different story entirely because while they use a small engine, they use multiple engines and are larger and heavier.
NOTE that there were RC "speed" planes built that did NOT have throttle controls. They simply flew "wide open" at all times. Some were powered by early Jet engines, (the Dynajet), that did NOT have a throttle at all! It ran wide open or not at all, being a pulse-jet.
References :
40+ years designing, building and flying RC aircraft.