Re: Ohlins, Wilbers and Works, Oh my!

[Bruno Valeri <bvaleri@xxxxxxxxxxxx>]

- ---- Original Message ----- 
From: "Robert Silas" <robert.silas@xxxxxxxxxxxx>
To: <oilheads@xxxxxxxxx>
Sent: Sunday, March 20, 2005 8:00 AM
Subject: Re: Ohlins, Wilbers and Works, Oh my!


> It's not that I doubt others opinions, I just would like to know,
technically, mechanically, what goes wrong with shocks.  I assume the RS'
shocks are oil shocks, so if they don't leak, the preload and the dampening
adjustment still work, what went wrong???

Robert,

In shocks, there are always different levels of performance available. The
quality of the valving etc will affect how it performs and this also has a
dramatic effect on how a bike (car) feels with a different shock on). It's
probably the single component that can most change the way your bike feels.

To me, that's not a problem. Just a  fact. A better shock will perform
better and thus feel better.

What is a problem is when an OEM shock is purported to have an unusually
short life. Across many lists, it seems that riders accept this as a given.
I don't. There is no reason for it. If it does occur, it is the result of
unusually poor specs.

> Can it happen that shocks are OK for 3-4 hours of riding but after that
they are not acceptable?? (as one of the response stated)

Yes. This is heat-induced fade. When the shock cools back down, performance
returns. This just means that you are working the shock slighly outside its
performance enveloppe. If this happens frequently, then the fix is a higher
performance shock. In off-road situations, where the shock goes through
sustained high frequency and high amplitude cycles, heat will cause them to
fade. Better ones are more effective in resisting this.

> Or, am I just lucky with my Beta-bike???  In the beginning BMW may have
provided better shocks. I am 165 lbs, no passenger but the boxes are heavy,
the Corbin Rambler seat is also heavy.

This may have something to do with it. I weigh approx 160lbs. So my shock
doesn't work as hard as a rider that weighs 230lbs, for example.

But one thing is for sure. Putting on better quality shocks will make a bike
feel way better.


Bruno
Montreal, Canada
CBR 929
http://pages.videotron.com/mcrides

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