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Re: Dashpot oil

To: <spitfires@autox.team.net>
Subject: Re: Dashpot oil
From: "Nolan Penney" <npenney@mde.state.md.us>
Date: Tue, 24 Jun 2003 08:22:26 -0400
I've played around a fair bit with my SU's and the ZS, trying different
oils to see what the effect is.

Starting with too thick an oil, you floor the throttle, and the engine
very slowly responds.  It takes a long time for the piston to move up,
causing the small venturi under the piston to limit air flow.

You thin the oil, and the throttle response progressively becomes
better.

Eventually, you can reach the point where the throttle response is
essentially too fast.  As in you floor the throttle, the piston quickly
too quickly, creating a bog a half second after the throttle is snapped
open.  

>>> "Steve Carter" <steve@juggler.net> 06/21/03 08:20AM >>>
Fellow spitters,

I'm still puzzled over the mysteries of what oil to use in my dashpots
(mkII
spit on twin SU HS2s) as far as I can figure, lighter dashpot oil is
better,
but no dashpot oil is bad...  How do I judge  the tradeoff?  Can
anyone
explain this in simple terms to a simpleton like me?!

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