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Message-ID: <428EA79D.5070009@bellsouth.net>
Date: Fri, 20 May 2005 22:14:37 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Intermediate housing ports/porting
References: <list-951552@logan.com>
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Russell Duffy wrote:

> But that would happen only if the pressure coming from the throttle were
> less that the pressure at the rotor.  How could the pressure at the
> rotor be less if it has been *sucking* in air?
>
>  
> When the intake starts on the second rotor, the suction will be enough 
> to at least reduce the amount of air that would have otherwise made it 
> into the first rotor.  Then again, if the velocity of the air is high 
> enough in the combined primary runner, perhaps that would overcome the 
> negative.  It's just hard to say, but I'm not sure I'm willing to cut 
> up my intake to find out yet. 
>  
> Cheers,
> Rusty (getting behind, must type faster)


Tracy talked somewhere about the siamesed center ports on his old carb 
setup costing significant power. The rotors definitely steal from each 
other & it kills intake tuning.

(come on down next weekend & get an explanation from Tracy himself.)

Charlie
Slobovia Outernational Airport