Robert Reynolds wrote:
>
>
> Bob Cowell wrote:
>> On Mon, 30 Jun 2008 15:3
>> Your charts look pretty "normal" to me ;-)
>>
>> I would add a disclaimer that props from different manufacturers vary
>> widely in
>> their performance.
>>
>> THE single BEST 16x8 I ever laid hands on was an ancient "RevUp"
>> I have been buying and trying different brands and styles ever since I
>> broke it.
>>
>> For the .40 size, PLAIN BEARING ENGINE, a 10x5 APC seems to be a
>> pretty good
>> match for those big draggy trainers.
>
>> bob
>
>
> It's funny you say that, because I use those plain bearing 40 engines
> all the time, and the 10x6 is about as much prop as you would ever put
> on one. 9x6 or 10x5 would be better, depending on the plane you're
> powering. I have a Cloud Dancer with a 40FP and a 10x5, and it's just
> right.
>
I had a 40 cub and it flew great on a PB os40 on an 11x4...
If I were to do it again it would be on about half that power and
electric and a 12x8 or 13x10.
> When I was punching in all those numbers for the charts my mind started
> to wander. I should have thought of that one myself.
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