I was just wondering something i was reading the specs on a plane were the motor size was a stock electric 400 and it said or a td.049 will that be about the same power difference wish there was a document that gave electric to glow conversion is there such a document thanks

http://www.maxxprod.com/mpi/tips3.html

Please note that under Engine Type Power Output should be Watts/cubic inch.

Forget it easyest way to see if its true is to try it i have depends on the weight of the plane thanks

The surest way is to try it. I wrote the above article and it is based on 10 years of flying electric airplanes and dozens of engine reviews. Math is not many peoples best friend, but it is accurate. The only thing you can't consider with the mentioned article is prop efficiency. Electric systems geared or outrunner can turn huge props and results in good performance on seemingly little power.

Performance is all about power to weight ratio.

Greg, that's a pretty neat page. It lays out a simple formula. The average TD puts out about 90 watts with an APC 5.7x3, so figure your power loading from there layback2.

It is pretty cool. I had never thought about calculating full size watts per pound until I needed a way to compare performance to engine displacement and get it across to a reader. And when I calculated glow racing engines power output it was amazing. The only thing more impressive was the time I calculated a model turbine engines HP output.

What did that work out at?
You only ever hear of turbines in terms of thrust. Be interesting to know what they do in HP or Watts.

I posted this in another modeling forum in 2004.
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The only turbine I have found a complete list of specs for is the JetcatP160. Old these days? Anyhow it makes 160N of thrust statically, while consuming 229kW worth of fuel. They list Efflux velocity as 444m/s. Mass flow at .38 kg/s. Output power(jet power) is quoted as 28kW or 37.5HP. Why wouldn't a turbine aircraft perform? When you have 444m/s efflux, flying at a paltry 89m/s(200MPH) is not a challenge, right? The amount of power available is tremendous.
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160 Newtons of thrust is equal to 36Lb. I guess I pulled most of the specs out of a catalog, but we were contemplating how fast we could get an electric ducted fan to fly.