Tue, 12 May 1998 15:55:53 +0200
- Message No. 2975
From: Martin Franz
Subject: Re: Fork pressure etc
Hi Pete,
Remote diagnoses is always hard :-))
> tap the nut a little, I also have a slight occasional knock from the
> front headstock area when going over bumps and turning on bumps, what do
> you think ??
Very likely, that the stearing head bearing is too loose. Try also a
"sudden brake" at 10km/h (very lowe speed) without a helmet. If you hear
a "knack", then it is 99.99% stearing head bearing...
> the front forks say a special tool is needed to adjust the bearings is
> this true or can I get around it with careful use of a chisel to just
I use screwdriver/hammer...but I don't recommend that :-))) Some hint:
the "endresult" is very much influenced by closing the "main" screw on
the top...so prepare to spend some time on this task.
btw: the NM force for closing this screw is IMHO only a rough number.
The only rule is: "Stiff enough to avoid ANY play, but loose enough to
no influence stearing too much. Measure __after__ applying correct
tension to top screw.".
> or should I just get some new bearings for the front headstock ??
This is awfull much work...so be shure, that they are really gone.
Getting the inner bearing ring from the fork bridge...brrrrrrrrr.
As long as you haven't driven too long with an incorrect tension, just
retensioning should really do it.
btw: there are "roll type" bearings. I tried them...but it was
imposible, to get them in without risking to destroy the bearing seat.
So I recommend the genuine "ball type" ones...unless the bearing seat is
too wide anyway...
> Air pressure in the front forks ! -seems a bit too bouncy at the front
> end when just cruising along at say 50kmh , what would this be and what
Never fill air in the front fork. When the problem persists, after
correcting stearing head bearing (if that is a problem, "remote
diagnosis" is always hard), better investigate, if fork is damped too
less.
I was also playing around with additional air...now I know: it was
complete waste of time. There are much better ways to reach total
satisfaction.
> For the users with the Garmin GPS 12, today I bought the handlebar
> bracket and although its only plastic :( it seems fairly strong and at
> only £10.95ukp very reasonable,
I've this for the Garmin IIPlus. I also like this handle bar mount :-))
best regards, Martin

dipper@normans.isd.uni-stuttgart.de