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Re: [Fot] Lifter Reconditioning

To: "Larry Young" <cartravel@pobox.com>, "Bill Babcock" <Billb@bnj.com>
Subject: Re: [Fot] Lifter Reconditioning
From: "MadMarx" <tr4racing@googlemail.com>
Date: Sun, 16 Mar 2008 11:51:27 +0100
My opinion is, that the clearance lifter to wall does compensate missalignment
of lifter and cam surface.
The domed crown was created to enforce rotation in combination with a cam
taper.

Evidence for this is, that nowadays cams die very quickly.


----- Original Message -----
From: "Larry Young" <cartravel@pobox.com>
To: "Bill Babcock" <Billb@bnj.com>
Cc: "FOT Triumph" <fot@autox.team.net>
Sent: Sunday, March 16, 2008 12:35 AM
Subject: Re: [Fot] Lifter Reconditioning


> Apparently, they discovered somewhere back about 1940 that in practice
> you can't get perfect alignment, so if you make everything flat, you'll
> probably end up with contact on the edge.  For one thing, you'll get
> some misalignment because there is clearance between the lifter and the
> lifter bore, so the lifter can tilt slightly. This is when they came up
> with the idea to put a slight crown on the lifter.
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