Simon,
I can imagine this is certainly not what you expected after spending
the money required to own a set of Dymags. However, it just doesn't
seem logical that a particular wheel can cause mis-alignment. A wheel
has to rotate on the axle and the wheel is either straight or not ..
if it is not straight then it will wobble as it rotates on the axle
shaft, (even if the axle is removed from the swingarm and suspended on
it's own .. and this is easy to measure with a dial gauge).
So my point is ... that any wheel that is straight, (doesn't wobble
with excessive runout), has no choice other than to point in the
direction dictated by the axle that is fixed .. and therefore ... if
it is pointing in the wrong direction now ... it was also pointing in
the wrong direction when you had the stock wheel mounted.
If the steering stem is not perpendicular to the axle that is of
course a problem ... On the other hand ... if an axle points slightly
to the right or to the left ... it will push or pull on the frame,
(assuming the frame can never be completely rigid), in it's direction
of mis-alignment and induce a shimmy during acceleration or
de-acceleration .. but otherwise it will simply "not" track behind the
front wheel, (not a biggie .. or even an offset wheel that does not
track exactly behind the front is not a problem as long as it is
pointing straight ahead .. so it is not pushing or pulling on the
chassis at an angle).
If you "buy" into the concept that the "wheel" could not cause this
problem, (assuming you are not dealing with run out on this wheel/tire
.. or have a twisted swingarm), then it's reduced sidewall
flexibility, etc .. blah .. blah ... is simply amplifying a problem
that you already had .. and there would be no point to go back to the
previous setup to mask it, (which I assume you have already
concluded). Isn't there a "frame/chassis" alignment shop there
somewhere with more precise laser alignment tools that could check
this out for you ??
campbell
----- Original Message -----
From: simon crook <[EMAIL PROTECTED]>
Subject: frame straightening...any advice!
>
> high y'all...i wonder what you'll think of my frame
> straightening idea?...i'm intending to hydraulically
> move my headstock in a frame jig to line up with my
> out of line rear dymag!!!...is this a case of two
> wrongz making a right...
> snip <
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