The weber only needs about 3 psi feed pressure.
Bill Jepson
------Original Message------
From: Charlie England
Sender: Rotary motors in aircraft
To: Rotary motors in aircraft
ReplyTo: Rotary motors in aircraft
Subject: [FlyRotary] Re: ignition confusion
Sent: Apr 10, 2010 9:32 PM

On 4/10/2010 10:16 PM, kevin lane wrote:
> bought an induction-type timing light, pulled the prop off, put the
> 3000rpm pill in the msd box, and ran my engine today.  starts easier
> without the prop on, plus the weather was warmer.  timing appears to
> be dead on 22° like I intended.  what confuses me is that when I move
> the timing light clip to the other rotor[#2], the light quits firing.  
> I pulled #2 lead plug and cranked the engine and saw a spark, and the
> engine actually started and ran on one rotor[#1].  both lead rotor
> plugs fire together from a dual post coil[waste spark].  not sure why
> the timing light appears to show that #2 isn't firing.  when I
> switched posts, then it showed #1 wasn't firing.  so it seems that the
> plug wire is bad, except when I pull the plug and lay it on the block,
> I can see it sparking.  the plug wires are blue silicon, with a rigid,
> spiral wound core wire.  they were originally from the Jeff rose
> electronic ignition on my Lycoming.  perhaps they confuse the timing
> light?  should I pull out my old timing light that used a "T" shaped
> spring coil to pick up the voltage? [pre-induction style]  guess I
> should test wire continuity.(?)
> the engine still won't rev past about 1500 rpm. [assume it is in
> transition to main jets?] I am wondering if the gravity-fed fuel
> doesn't create enough flow/pressure.  I need someone to tell me what
> electric fuel pump [for a Weber carb] I should buy.  the facet that's
> in my RV is too noisy, and seems inadequate for continuous loads.
> at 1000rpm I see 60 lbs oil pressure.  is this adequate?
> KevinLane Carpentry
> www.KevinLaneCarpentry.com <http://www.KevinLaneCarpentry.com>
Hi Kevin,

FWIW, there are guys running O-320H series carb'd engines with no
mechanical pump; just a facet for the main pump & a facet for backup.

I don't know what the Weber expects, but you'd think that if it's a carb
with a float bowl, it wouldn't need a lot of pressure.

Charlie

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