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ACRO E-mail Archive Thread: [Acro] Re: S1-S

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ACRO E-mail Archive Thread: [Acro] Re: S1-S


Thread: [Acro] Re: S1-S

Message: [Acro] Re: S1-S

Follow-Up To: ACRO Email list (for List Members only)

From: "Peter Ashwood-Smith" <petera at>

Date: Fri, 26 Jul 2002 18:23:07 UTC


I'm confused. The S-1T has a combined fuel pressure and manifold pressure
guage, not a combined fuel pressure/oil pressure gauge unless they came with
different instrument packages?

If the manifold pressure gauge is starting to fail, its almost certainly
because the snubber is gummed up. Its an easy thing to fix. Just unscrew the
manifold pressure line from the back and with a philips head screw driver,
undo the snubber screw about 1 turn, then turn it back in exactly to where
it was before you unscrewed it. This will probably ungum it. 

The snubber screw is actually right inside the port where the manifold
pressure line fitting attaches to the back of the gauge. Its purpose is to
damp the oscillations from the engine so you get a smooth reading. Its very
easy to set this thing without even running the engine. Just put a small
piece of tubing over the elbow fitting that comes out the back of the gauge,
then you can suck/blow gently on the tube and watch the guage.
You set the snubber so that you get just a bit of delay in the needle
movement to your pressure changes on the line. 



	-----Original Message-----
	From:	Neal Frangesh [SMTP:LGAENG at]
	Sent:	Friday, July 26, 2002 1:23 PM
	To:	INTERNET:acro at
	Subject:	[Acro] Re:  S1-S


	Call Mike DuPont at American Aero Services.  (508) 824-5681.  He had
	one on my S-1T repaired.


	Neal Frangesh
	S-1T,  N11N
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