My point is the same as you have made to me and many others on numerous
occasions, don't state facts that are opinions. That's the point.
JVV
----- Original Message ---
From: "Randall" <tr3driver@ca.rr.com>
To: "'Triumph list'" <triumphs@autox.team.net>
Sent: Thursday, January 11, 2007 9:02 AM
Subject: RE: [TR] TR2,3,4 thermostats
> > Randall, The statement was made as if it was factual as it relates to
the
> > TRactor engines and I wanted to know the origin of the facts. While it
may
> > be self evident and the argument that it is appears strong, is there
factual
> > evidence somewhere that the by pass and sleeved thermostat were designed
for
> > the "facts" stated?
>
> Jerry, I guess I don't understand your point. The TRactor motor very
likely had
> a thermostat bypass because _all_ water-cooled engines with water
thermostats
> have thermostat bypasses (both before and after the TRactor motor) ... it
> certainly wasn't designed totally from scratch but instead relied on
proven
> design elements (as all engineering does). That does not keep it from
being
> true that the reason a bypass is necessary is to prevent hot spots and the
> damage they can cause.
>
> And no one AFAIK is trying to claim that the sleeved thermostat has
anything to
> do with hot spots. The theory behind the sleeve is that once you have a
bypass,
> you need to close it off when the thermostat is open, to force all of the
water
> to go through the radiator. Again this is a design element that I feel
> confident the Standard engineers copied from other successful engines.
Later it
> was noticed (by other companies/engineers first, no doubt) that the sleeve
cost
> money and was not an absolute necessity; thus could be eliminated to
reduce
> costs. There was actually a lot of that around 1960, when S-T was taken
over by
> Leyland, and several other areas were modified to reduce costs (like the
fuel
> tap eliminated and the door hinges changed from brass to sheet metal).
>
> Randall
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