Thu Nov 13 15:49:44 1997
- Message No. 1664
From: Martin Franz
Subject: RE: Straight going of @
Hi Vladimir !
Mine AT had that also for two times:
Reason 1:
the stearing head bearing tension is too strong
Reason 2:
the stearing head bearing is dead/damaged
Test 1:
two people required. Bike on sidestand. One lift's bike over sidestand/rear
wheel unti front wheel comes free. Try to get the bike in balance. Then,
put stearing to straight position and let stearing go. Stearing should fall
gently to the left side. Now do the same, but with completly turn right and
push the stearing a bit. It should also go to left, BUT should never stop
in the straight position !
> doesn't fall
wether bearings completly gone or tension to strong. Decrease tension, try
again.
> goes left "jumping"
bearing dead/damaged
> falls very fast
tension to weak. Increase tension, or bearing will soon be dead.
Test 2:
Put bike on mainstand or some box, push it so, that front wheel comes free.
Dismount stearing plate and increase stearing head tension. Pull stearing
(ie. on the fork legs) from left to right. It should go smoth. When it
"jumps", stearing head bearing is dead.
Strange but true: if the fork has a twist (even a real strong one :-), the
bike still goes straight.
regards, Martin
p.s. front crashes tend to kill those bearing. Maybe the dealer didn't fix
that, it's a real bad bad work....
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