[TR] Tach needle (TR3)

[Carl TR]

Red letter day for me as well.  I took a 143 mile (round trip) drive in my
'3.  First trip really outside of the neighborhood.   Total miles about 350
(speedometer not hooked up part of the time - it now reads 248). 

 

Anyway - I am having the same nagging issue with the tach.  Under load it
travels fairly smooth but at idle or constant speed it bounces about 250-300
rpm in either direction of what it should be.   Before installing I measured
the part of the cable protruding and it was 11/32" which was within the
specs I was told by Morris who rebuilt the unit.  (5/16-3/8")

 

I didn't check the other end at the diz - is there a similar issue?  

 

The other issues I am having are:

The prop rod rattle others have talked about.   Going to change out the
fasteners at the pivot point and see what happens. I had used a pinjoint,
washer and cotter pin so it is real loose.  Will drive a bit without the rod
in place to make sure that is the rattle.

 

Still have a 'dead' fuel gauge.  It reads ok out of the car in a test
environment so there must be an issue with wiring.  I do not want to take
the instrument cluster out (again for the fourth time) - next weekend I will
take the cubby box back out so that I have access to do some continuity
probes.  

 

The steering seems to bind a bit sometimes.  I used the TR4 bushings so that
may be the problem.   It isn't critical and I am going to see if it loosens
up with more use.   Also thinking about putting some white lube or graphite
down the column.  Speaking of steering - the auto-cancel doesn't work on the
turn signals.  Is there a 'how to' out there somewhere to troubleshoot
that..

 

It was a great day for a long drive here in Tampa area.  Low 80's - humidity
in the 60's.  (not the normal 80/80)

 

 

 

Carl

 

 

Carl

1961 Triumph TR3A - TS81802LO

http://mysite.verizon.net/cfmtr3a/  - Verizon has discontinued the mysite
URL.  Looking for a new home.

Tampa, FL

 

From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Andrew
Uprichard
Sent: Sunday, May 03, 2015 5:01 PM
To: triumphs at autox.team.net
Subject: [TR] Tach needle (TR3)

 

I have just put 100 miles on my newly-restored '57 small-mouth and am
working through the usual "teething" problems:  leaks, oil pressure
adjustment, electrical glitches, etc.  One thing I cannot work out is that
the needle on the tach swings about quite a bit:  it's ok at steady rpm, but
gear changes cause marked fluctuations.

 

I had the gauge rebuilt by Nisonger and I have a new cable.  Any thoughts
why this should be so?

Andrew

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/triumphs/attachments/20150504/89b764ae/attachment.html>