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From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3883682@logan.com>
Subject: Re: [FlyRotary] Re: intake manifold 13b 86
Date: Tue, 13 Oct 2009 11:20:35 +1000
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Bob,
The small centre ports are the primary ports  and serve a useful function, 
as their smaller and provide greater inlet velocity for low power and idle. 
However their not available for the P-ports and PP operate OK if not as good 
as the two side ports, at lower RPM.
At a certain RPM both ports are open to the rotor providing better 
breathing, I don't know if the one larger side port is large enough to do it 
alone - better to leave them both there OR use a PP.
George (down under)

> Richard,
>
> My concern with not using the center ports would be not having the second 
> injector per rotor. I you place two injectors per tube, in your plan, it 
> might work since we aren't getting max RPM anyway.
>
> Bob Tilley
> Albany, Ga
>
> -------------- Original message ----------------------
> From: "jrhopkins" <jrhopkins@windstream.net>
>>
>> has anyone used blocked off the center two apertures and used the front 
>> and rear
>> intake manifolds only?  i do not understand the need for the center split 
>> intake
>> for aircraft use.   thanks   richard
>
>
>
>
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