wrote: I assume you are talking about a 6000 rpm limited rotary vs a wide open 0-360. Run the rotary faster and thats the end of the story. Jerry Ed Anderson wrote: > Tom, > I don't really think anyone can accurately make a generalization like > that. > From: Tom > It's my understanding that NA non-renesis rotary installations > produce less power than 360s, Perry Mick might have a word on this. > Eric Ruttan wrote: > A 360 Lyc does not produce the same power as a rotary. > If true, then the Ellison card may not get enough air. > If not true, then there is no real reason why the Ellison cannot feed a > rotary. > > Ed, I understand your math, but even if the local inlet velocity is much > higher, we dont care. the velocities adverage out to the same, as the > volume of air = velocity * carb area. > > If the velocities are higher, the rotary consumes more air, and makes > more power. > --------------------------------- Do you Yahoo!? Yahoo! Search presents - Jib Jab's 'Second Term' --0-69053167-1108050746=:48332 Content-Type: text/html; charset=us-ascii

Ed / Jerry,

I stand corrected. Let me say that 'the 13b power I see being achieved so far in NA 13b airplane installations seem to be less than what O-360 guys are getting'. After mounting props was anybody able to attain even 6000 rpm in their 13b NA aircraft installation, level-flight?

Tom

Jerry Hey <jerryhey@earthlink.net> wrote:

I assume you are talking about a 6000 rpm limited rotary vs a wide open
0-360. Run the rotary faster and thats the end of the story. Jerry

Ed Anderson wrote:
> Tom,
> I don't really think anyone can accurately make a generalization like
> that.

> From: Tom
> It's my understanding that NA non-renesis rotary installations
> produce less power than 360s, Perry Mick might have a word on this.

> Eric Ruttan wrote:
> A 360 Lyc does not produce the same power as a rotary.
> If true, then the Ellison card may not get enough air.
> If not true, then there is no real reason why the Ellison cannot feed a
> rotary.
>
> Ed, I understand your math, but even if the local inlet velocity is much
> higher, we dont care. the velocities adverage out to the same, as the
> volume of air = velocity * carb area.
>
> If the velocities are higher, the rotary consumes more air, and makes
> more power.
>

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