Hi Hans;
I can't offer a solution, but I can say that some TR3 speedometers are
moderately accurate, whilst most wave all over the place and offer no
indication of actual speed. Between my dad and I, we've owned 5 sidescreen
TR's and
a total of 18 Triumphs. The speedometers of sidescreen TR's are by far the
worst, and I no longer look at that instrument. I had one early TR3 where
the needle would spin completely around. The faster I drove, the faster is
spun, to the point where it spun so fast (propeller-like) that I could not
see it. In reverse, it spun backwards. My suggestion is to just drive the
car and not worry about it. Sorry to be a spoilsport.
Tim
In a message dated 16/03/2012 12:02:34 A.M. Eastern Daylight Time,
tr3 at roadrunner.com writes:
My TR3 speedometer whips at low speed, steadies out mid range and
then becomes erratic around 60 mph. I replaced the cable, routed it
exactly same way as the original , but the problem remained. I
suspect it is still a cable problem.
I read somewhere that lubricating with oil or other liquid is bad as
the factory carbon lubricant may migrate with it upwards into the
speedometer bearings which is harmful in the long run.
Is the speedometer the more likely culprit? Has anyone serviced one?
Could lack of damping with age be a problem?
Hans, 61TR3A
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