ORIGINAL: Jaysbird
How can one get a real world comparisons of how a given engine compares to other engines of the same size? We know that manufacturer numbers are almost useless.
I bought my first 4S engine a few months ago. Its an ASP 65. I did a search on this engine and as usual some say its a strong engine and others say its not. Ive run almost a gallon of fuel through it and its able to turn an APC 12-6 at 10300 rpm steadily with a lot of smoke coming out. I can get it to about 10600 with less smoke but it will not maintain this RPM. But I don't know if this is good for this sized engine or not. Where can I find practical numbers for given engine sizes and props to compare?
Thanks,
~Jay
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I would change the prop to a 13x5 or 6. Try to keep the ground rpm below 10k rpm to provide some latitude for gaining rpm once flying.
I'm not saying that you will damage the engine by running it that fast, but I don't think that you are getting the best power and throttling characteristics out of the engine with a .50 sized prop.
I have heard good things about ASP engines, generally. In fact, I just bought one of their 1.80 engines. Haven't ran it yet, but I'm moving in that direction.