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From: david mccandless <daval@iprimus.com.au>
Subject: Re: [FlyRotary] Re: Fuel Injector Position (was  Re: Makingprogress on Chris n Dave's Velocity Engine)
Date: Tue, 21 Jun 2005 04:06:32 +0800
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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> On PL's recent PP dyno run, he stated that with the injectors placed=20=

> near the entry of the runners, there was considerable evaporative=20
> cooling taking place and as the tubes were running very cold VE should=20=

> be good. The worry to me here is that with the TB at the other end of=20=

> the runner,ie close to the port, there is a real risk of ice build up=20=

> on the throttle body butterfly. The old bugbear of carb ice is back.=20=

> FWIW, Dave McC

>   since the
>> ----- Original Message ----- From: Jerry Hey
>> =A0
>> based on Paul Lamar's current p port testing there is no problem with=20=

>> placing the injectors at the far end of the runners. This is also=20
>> backed up by an article on the internet (How to Fabricate an Intake=20=

>> Manifold) The idle issue is not with injector location but rather=20
>> with butterfly location.=

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<excerpt>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

</excerpt>

<excerpt>  since the=20

<excerpt><fontfamily><param>Arial</param><x-tad-bigger>----- Original
Message -----
=
</x-tad-bigger><bold><x-tad-bigger>From:</x-tad-bigger></bold><x-tad-bigge=
r> =
</x-tad-bigger><color><param>0000,0000,EEEE</param><x-tad-bigger>Jerry
Hey</x-tad-bigger></color><x-tad-bigger> </x-tad-bigger></fontfamily>

=A0

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.</excerpt></excerpt>=

--Apple-Mail-23--743128370--