Re: [ST] Tank Slap

["ksmith955" <ksmith955@xxxxxxxxxxx>]

Chris,

Forgive my mentioning the obvious, but are yout tyres OK?  I have just
replaced my second set at 17,000 miles and what a difference! I had
Bridgestone 020s on my ST, and found latterly with the rear well squared off
and the front down to the wear indicators 2mm that everything could get a
bit vague, especially cranked over.  Never got into a tank slapper, though.
I thought that only happend to Suzuki TL 1000s.  Fitted Avon Azaro IIs -
whole thing now a lot more poised, even nimble over the trial sections that
are laughingly called streets in London.

Kevin (Reservoir Dawg)
99 Sprint ST
London.


- ----- Original Message -----
From: "Chris Maher" <mahervis@xxxxxxxxxxxxxx>
To: <ST@xxxxxxxxxxxxxx>
Sent: Friday, June 14, 2002 9:13 AM
Subject: Re: [ST] Tank Slap


> Thanks Nick
>
> The bike is 12,500k's old, I have had it since new so can vouch for the
> frame etc and other areas you mentioned.
>
> My question was mainly based on something you hear people mention or has
> happened to other riders but not something you can practice for or even
try
> to avoid it unless its happened to you personnally.  I was of the
> understanding that the shorter wheelbase, sharper steering angle styles
were
> more prone to it than our sprints but you can never know enough to be
fully
> aware of all riding situations.
>
> Thanks for the reply anyway.
>
> Cheers, Chris
>
> ----- Original Message -----
> From: "by way of Message_Redirector@xxxxxxxxxxxxxx" <owner-st@xxxxxxxxxx>
> To: <ST@xxxxxxxxxxxxxx>
> Sent: Friday, June 14, 2002 7:21 AM
> Subject: [ST] Tank Slap
>
>
> > From: "Nick" <nick@xxxxxxxxxxxxxxxxxxxx>
> > To: <ST@xxxxxxxxxxxxxx>
> > Subject: Tank Slap
> > Date: Thu, 13 Jun 2002 19:05:04 +0100
> >
> > Chris,
> >           You shouldn't get a tank slapper on an RS or ST,  the
wheelbase,
> > steering geometry and very rigid frame make my RS (same frame
> > as ST) as stable as a rock, and it has a reputation for being so.  You
> only
> > get tank slappers with very quick steering bikes nowadays and
> > stiill I believe that something is out of line to cause it, or
> > manufacturers would fit steering dampers as standard equipment.  I
believe
> > that the steering on the RS is quicker than an ST due to higher back
wheel
> > ride height making the effective rake of the forks steeper.
> >
> > Reasons
> >
> > 1)  It's been pranged and something is out of line.  You don't say if
you
> > have had the bike from new and some frames can be straightened, good
> enough
> > to fool the next buyer and your local 'Mr Straightenit's' jig but not
good
> > enough to stop tankslappers.    Could have been dropped and therefore is
> > out of line.  This is the most serious cause.
> >
> > 2)  Check that the back wheel is not out of line.  On chain adjustment
you
> > could have the back wheel 'on different notches on each side'
> >
> > 3)  What is the mileage, check head bearings for play, check forks for
> > play, check wheel bearings for play, check swing arm bushes for play.
> > These allow things to move out of line.
> >
> > I have never known a new bike, sold without a steering damper get the
> > wobbles.   I did once have a bike that somersaulted down the road after
I
> > flipped it in the wet and although it looked all OK, at about 80mph it
> > could suddenly go into a vicious wobble that I found quite frightening.
> >
> > Nick.
> >
> >
> >      *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
*
> *
> >       The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
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>
>
>      *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
*
>       The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
>           http://www.TriumphNet.com/st/lilley for more info
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     *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
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          http://www.TriumphNet.com/st/lilley for more info
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