In my "dumber days" I used in the damper whatever oil I happened to be using
in the crankcase. What IS the "proper" oil to use in the damper? I hope
it's not the $1.00 per ounce stuff that the usual sources sell because my
damper used oil like it was free.
Reid, K7YX
-----Original Message-----
From: Patrick Barber [mailto:sailnbail@earthlink.net]
Sent: Wednesday, May 12, 1999 6:45 PM
To: wizardz
Cc: LARRY ELSWICK; triumphs@autox.team.net
Subject: Re: Carb Damper
wizardz wrote:
> the oil acts as a dampener to slow the speed at which
> the main air pot rises... at the minimum....for two reasons
>
> 1) when you suddenly open the throttle, you want the mixture
> slightly rich. The oil will slow the rising of the pot, restricting
> the airflow volume, and at the same time create greater vacuum
> pressure on the gas being sucked up from around the needle.
>
> 2) if you've ever watched a vacuum gauge on your manifold,
> you'd see how quickly the vac. can rise or fall from near zero
> to 21-26 in/Hg. This rapid change can actually can slam the pot up
> or down (depending on throttle action) this rapid change would (does)
> not accurately control flow of either air or the gas. You go from
> excessively
> rich to excessively lean almost instantaneously. This will lead to
> wide temperature swings, and the sudden temperature rise is (among
> others) one of the common causes of burned spark plugs and valve problems.
>
> -----Original Message-----
> From: LARRY ELSWICK <sos@kymtnnet.org>
> To: triumphs@autox.team.net <spitfires@autox.team.net>
> Date: Tuesday, May 11, 1999 11:42 PM
> Subject: Carb Damper
>
> >
> >Would someone please tell the purpose
> >of the oil in the dashpot of the Stromberg
> >carb. I checked the level and found practically none.
> >Thanks!
> >
> >
It also prevents the slide from "resonating" or uncontrolled oscillation. It
acts very much like shock absorbers on your suspension.
--
Patrick Barber, Allen Park, MI
70 Spitfire MkIII FDU89984L
Visit My Triumph Website at
http://www.geocities.com/motorcity/pit/7864/Triumph/
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