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Jim,
I think you skimmed over an important qualification of Dave's comment: ... The worry to me here is that with the
TB at the other end of the runner,ie close to the port,
which exactly fills this part of your analysis:
... I think carb ice is pretty much always associated with fuel sprayed into a venturi, and the injectors in our application are always downstream of the "venturi" formed by the partially open throttle.
Dale R.
(the world needs more Lerts ...)
From: Jim Sower <canarder@frontiernet.net>
Date: 2005/06/20 Mon PM 09:18:54 EDT
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Fuel Injector Position (was Re:
Makingprogress on Chris n Dave's Velocity Engine)
But wouldn't that be true of ANY injectors placed a significant distance from the block? I think carb ice is pretty much always associated with fuel sprayed into a venturi, and the injectors in our application are always downstream of the "venturi" formed by the partially open throttle.
I wouldn't worry ... Jim S.
david mccandless wrote:
> On PL's recent PP dyno run, he stated that with the injectors
> placed near the entry of the runners, there was considerable
> evaporative cooling taking place and as the tubes were running
> very cold VE should be good. The worry to me here is that with the
> TB at the other end of the runner,ie close to the port, there is a
> real risk of ice build up on the throttle body butterfly. The old
> bugbear of carb ice is back. FWIW, Dave McC
>
>
> since the
>
> ----- Original Message ----- *From:* Jerry Hey
> > based on Paul Lamar's current p port testing there is no
> problem with placing the injectors at the far end of the
> runners. This is also backed up by an article on the internet
> (How to Fabricate an Intake Manifold) The idle issue is not
> with injector location but rather with butterfly location.
>
>
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
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