Triumph Experts:
It's been a busy week and I haven't had much time for progress on my
distributor troubles. This morning I noticed something, however.
How easy should it be to twist the ends of the distributor shafts (in
opposite directions) to feel the advance mechanism working? If I
hold one end of the shaft and try to twist the other in either
direction, I can hardly get the thing to budge. The upper part of
the shaft should twist relative to the main shaft, and I would have
thought it would twist easier than this one does. I seriously don't
think I'm able to twist it at all. If I am, it's not twisting very
much.
Second question is about the advance springs. Looking inside the
distributor body at the advance mechanism, I see there are two
springs. However, in my distributor, one of the springs appears to
be a much lighter spring than the other. One spring is made of
heavier wire with a larger coil diameter, and as I look at it right
now it is coil-bound. (the coils are touching each other) The other
spring is of lighter wire and a smaller coil diameter and the coils
have plenty of space between them (not coil-bound). As I look at the
mechanism, I cannot think of any reason why these springs should not
be identical to each other. Yet, quite obviously, they are VASTLY
different.
What does this all have to do with my cracked rotors? Maybe nothing.
But could it be that a problem with the centrifugal advance mechanism
could create a situation that causes the rotor's orbit to expand
enough to touch the terminals inside the cap only under certain
circumstances? If this were possible, it could explain why I can't
get the rotor to come anywhere near the terminals while holding the
dizzy in my hand, and yet I see evidence of light contact on the
terminals, as if the rotor HAS been rubbing the terminals when it was
on the car. I can't personally imagine such a thing, but I've got
some conflicting circumstances here and I need to find a way to
reconcile them. That might require more imagination than I have!
Does this give anyone any ideas?
--
Pete Chadwell
1973 TR6
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