Hi
This is a question about real r/c model airplanes. I just moved to La Paz Bolivia some time ago. THis ity is the highest city in south america. They told me that I should by a stronger motor for my plane because of the altitude. In my plane box it said a motor 40 FX but they told me to buy a 46 FX please give me an answer I donot know what to do.
Sturdy Birdy 10
real airplanes
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by Sturdy Birdy 10 » Thu Jun 26, 2003 4:52 pm
- Sturdy Birdy 10
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by jon » Sun Jun 29, 2003 7:47 pm
Hi
When the altitude increases, the air(density) gets thinner. Every engine need oxygene and fuel mixture to make a comburstion.
The fuel/oxygene ratio is pretty fixed. When the air is thinner you have to lean the throttle needle and simply take avay some fuel so the engine won't run too rich.
This will reduce the power of the engine, so that a .46 engine will in the high-altitude level provide about the same power as a .40 engine at sea-level.
May be you shold consider even a .50 size. You don't need to run it on full power all the time, but you would have some power extra when you need it.
When the altitude increases, the air(density) gets thinner. Every engine need oxygene and fuel mixture to make a comburstion.
The fuel/oxygene ratio is pretty fixed. When the air is thinner you have to lean the throttle needle and simply take avay some fuel so the engine won't run too rich.
This will reduce the power of the engine, so that a .46 engine will in the high-altitude level provide about the same power as a .40 engine at sea-level.
May be you shold consider even a .50 size. You don't need to run it on full power all the time, but you would have some power extra when you need it.
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Jon@Norway
Jon@Norway
- jon
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