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Date: Mon, 21 Mar 2005 19:36:41 -0500
Subject: Re: [FlyRotary] Re: P  port intake design
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From: Jerry Hey <jerryhey@earthlink.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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Ed,  you are right on all counts.  Space and Ease of fabrication and  
the idea of cold side fuel all play a part.  If I go to an injector  
close the the butterfly such as Power Sport is doing, then I will have  
to go to a single injector as there is not room down there for two. I  
like using  two injectors if I can.  P ports (if the runners are not  
too large) can generate some howling velocities, probably more than an  
intake with four runners, that I hope will help with the throttle  
response.  But we shall see.  This is an experiment and I will change  
what does not work.    Jerry


On Monday, March 21, 2005, at 07:08 PM, Ed Anderson wrote:

> No error Jerry, but wonder why are you putting the injectors so far  
> away
> from the port? Space? Ease of fabrication?   I tried putting my four
> injectors 21 inches away from the port myself and found that while I  
> could
> not tell any difference in power( up or down), I found a distinctive
> hesitation bog if I opened the throttle quickly.  Also it was hell to  
> start
> on a cold morning.  But, a PP port may be a different animal in those
> regards - actually cold starting should be OK as any liquid fuel will  
> flow
> down hill.  With my plugs up it has to flow up hill {:>).
>
> Good luck, we are all eagerly awaiting the results and I have two  
> almost new
> rotor housings just waiting.
>
> Ed Anderson
> ----- Original Message -----
> From: "Jerry Hey" <jerryhey@earthlink.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Monday, March 21, 2005 6:34 PM
> Subject: [FlyRotary] P port intake design
>
>
>> I've been messing with the p port intake design.  I think it is about
>> ready to build.  If anybody sees a glaring stupidity or even a subtle
>> one, please let me know.
>>
>> Still to be resolved is which injectors to use.  Tracy,  do  you have
>> any suggestions?  Using the 80 per cent rule, I need injectors for
>> around 260 hp.   Thanks  Jerry
>>
>>
>
>
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