Scott/ Randall:
Please recall our list discusssions regarding my problesm with the fan-
that it refuses to 'balance' no matter how I have 'tweeked the blades' or
used the original balance piece - in its proper (factory) location. My
problem is a vibration which starts @ 3800 RPM and becomes totally
unacceptable at 4500 RPM. I usually shift at 4,000, but there are times on
the interstate when passing one would be better served at closer to 5000
RPM.
My decision was to convert to an electric fan, and I thought it was you
(Randall) who gave me the correct replacement bolt size. Notes at home.
Anyway Scott, I think that it was 'greenman 62' who installed a harmonic
balancer kit, but the general consensus was that for other than race use,
removing the metal fan and extension housing' and replaceing the unit with a
flat washer and bolt to hold the two part pulley in place was not an unusual
conversion.
AS soon as I finish my workshop construction- that's the Triumph project for
late winter.
Sherman Taffel
'65 TR4 CT40054L
TRAC/CTR
--------
Date: Wed, 30 Jan 2002 22:55:10 -0800
From: "Randall Young" <ryoung@navcomtech.com>
Subject: RE: Harmonic Balancer
Scott, believe it or not, the fan serves as the harmonic dampener! I don't
know if Standard planned it that way, but that's the way it works out. The
little rubber bushings are the active element, and the fan provides the
counterweight. The fan is supposed to be balanced on it's own, but it's
probably a good idea to install it when doing final balance on the crank.
Randall
>
> Does a TR3A (comm. no. TS42153) have a harmonic balancer? When
> I take my block to the shop, I will include the shafts, fly wheel
> and they want the harmonic balancer so they can balance the
> engine when they go over everything. It certainly isn't listed or
> named as such in the parts catalog.
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