ORIGINAL: rc34074
ORIGINAL: rmh
ORIGINAL: rc34074
To
Pete Bergstrom
Saito, Evolution & Zenoah Manager
Pete- please tell me what rpm this engine turns a 13-8 prop, both on the ground and in the air? I see that the website says it will handle a 13-8 so I figure you must have some data to base this on, and I would like to know this because I'm thinking of putting this engine in my 40 size mustang.
Ed
For those who really care -
the prop reading on the ground is TOTALLY independant from in the air readings .
The max power in the air is NOT the same as the max torque available .
The maximum torque available with no muffler and or a muffler or a pipe is again not the same in any of those cases
The best prop for a given type model is a case by case thing -involving the engine- prop and plane and the manner in which it is flown.
When asking about how well the engine will work for YOU- -it is necessary to include all this info.
In the case of the 13x8-on this engine - it would likely be best on a light model which was not intended to be a fast flyer.
The smaller props which allow the engine to run faster are better matched to it - for most sport applications.
Hmm I have read your post and I'm still trying to unerstand what your point might be. If your main point is your last 2 sentences then from the data I have seen you are only thinking of this engine as it might be used in 3d type planes. To me this engine sppears to be capable of many more uses and you are not considering those possibilities. So your statements in those two sentences is wrong. My mustang is light enough that if this engine performs as I have read here then the 10gx would be a good engine for it - maybe even an excellent engine. But if Evolution came out with a 15cc version this would be a superb engfine for 40 size warbirds, especially if they also had a compact inverted pitts muffler for it.
Ed
The point was -overpropping it reduces max power - The BUT is - on a slower, lightly loaded model - this may be a perfect match