|Aug 06, 2012, 11:33 AM|
General question: gas consumption?
Can anyone tell me how much his DLE (20, 30, 35,55) or comparable gas engine consumes? Like: my DLE xx usually drains a xx oz tank in x minutes, when I do (cruising/3D/, whatever) with my xx lbs plane. I have to do some math on fuel budget 'cause I am going to buy my first gas engine.
|Aug 07, 2012, 10:15 AM|
Joined Aug 2005
A general rule of thumb for 2 stroke gas engines is fuel consumption = engine displacement per minute.
Thus, 20cc = about .68 oz; 30cc = about 1.0 oz.
These are fuel consumption at full throttle. Throttle management will extend consumption time considerably.
I fly a Zenoah G20, and using a 12 oz tank is usually good for 2 aerobatic flights of 8 minutes with adequate reserve left. An 8oz tank would be probably a better choice as I would be carrying less "cargo" as excess fuel.
Flying style, state of tune, prop choice all have an effect on results.
|Aug 16, 2012, 05:56 AM|
Cheaper too ! And a gas 4 stroke can probably reduce consumption by that much again..
I had converted a 4 cycle Stihl String trimmer FS110 engine to use in my Great Planes Stearman. It was not over powered,but was adequate.
My testing was because someone who didn't know,challenged the ability to fly inverted with that engine.
The FS110 uses a two-stroke fuel mix,although it's a four cycle eng.,and there were no problems with lubrication at all.
Model airplane power is becoming diversified,to be sure.
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