a wheel centering question

Paul Nevai said:

I had my wheel hubs repacked last year and yesterday I put them into a truing
stand and I noticed that both were off the center to the right by about 1 mm.
I am not sure how to describe this. The truing was correct but the wheels
were not properly centered on an the hub axis.

Is this a problem and does it have to be fixed or I shouldn't worry about it?

Thanks, PaulN

Paul,

No

Ernie

Paul Nevai said:

I had my wheel hubs repacked last year and yesterday I put them into a truing
stand and I noticed that both were off the center to the right by about 1 mm.

Flip the wheel around in the truing stand. If the offset moves to the
other side the wheel dish is off. If it stays on the same side, the
truing stand is off.

A dishing tool works better than a truing stand for making this
measurement. But in any case, I wouldn't worry about 1mm.

Art Harris

"Art Harris" <[email hidden]> aszonygya:
:Flip the wheel around in the truing stand. If the offset moves to the
:other side the wheel dish is off. If it stays on the same side, the
:truing stand is off.

I did that before I posted the problem and the offset moved. However, almost
all of you guys suggested not to worry about 1 mm so I won't.

Actually, a 1 mm difference really means an actual 1/2 mm offset. I am not a
bike expert but a mathematician and my conclusion is theoretical. I might be
wrong though in practice.

/Paul

Paul Nevai said:

"Calvin Jones" <[email hidden]> aszonygya:
:If the wheel appears centered in the frame, the wheel is considered
:adequately centered. Keep in mind the wheel is used by riding the
:bike, of course, not by riding the truing stand.

Good point. It is centered in the frame.

Since you are from Park Tool, I mention that I have the Professional Wheel
Truing Stand TS-2 and has served me well for many years. Alas, my hand is
becoming weaker since today I could barely turn the crank adjusting the axle
distance. I can't believe how hard it is to turn it. I wonder if some oiling
would help.

All=my=best, Paul

the ts2 is notoriously bad at accurate centering. you can set it center
for one axle width, but the next one is /way/ off. utterly bizarre &
completely annoying. best practice is to rely on a bona-fide dishing
gauge to confirm centering, /not/ the ts2.

Paul Nevai said:

I had my wheel hubs repacked last year and yesterday I put them into a truing
stand and I noticed that both were off the center to the right by about 1 mm.
I am not sure how to describe this. The truing was correct but the wheels
were not properly centered on an the hub axis.

Is this a problem and does it have to be fixed or I shouldn't worry about it?

Not 1mm - but if both are the same, is the truing stand itself straight?

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

I had my wheel hubs repacked last year and yesterday I put them into a truing
stand and I noticed that both were off the center to the right by about 1 mm.
I am not sure how to describe this. The truing was correct but the wheels
were not properly centered on an the hub axis.

Is this a problem and does it have to be fixed or I shouldn't worry about it?

1mm is nothing. Just leave it.
-----------
Alex

Zog The Undeniable <[email hidden]> aszonygya:
:Not 1mm - but if both are the same, is the truing stand itself straight?

Good point but, amazingly, it is. I happen to have a dish measuring device
too by Park [I am not sure about the name] and it shows the same offset. I
used it with the tires off the wheel.

All=my=best, Paul

On Wed, 25 May 2005 06:41:45 -0700, jim beam <[email hidden]>

Quoted message said:

the ts2 is notoriously bad at accurate centering. you can set it center
for one axle width, but the next one is /way/ off. utterly bizarre &
completely annoying. best practice is to rely on a bona-fide dishing
gauge to confirm centering, /not/ the ts2.

I seem to do ok. I build the front wheel first and check the rear
with a dishing tool. The TS2 must have lots going for it because I
see so many of them.