RE: [ST] Tech Info

["Heyer, Matthew A." <mheyer@xxxxxxxxx>]

Good to know!

Matt Heyer 

- -----Original Message-----
From: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx] On Behalf Of Neil
Lindsey
Sent: Thursday, September 30, 2004 1:07 PM
To: ST@xxxxxxxxxxxxxx
Subject: Re: [ST] Tech Info


OEM Sprint brakelines ARE stainless-steel braided lines.  They are just
covered in rubber so you can't see the braiding.

DOT5 brake fluid is silicone-based and DOT5 was originally designed for
military vehicles which are often left unattended for long periods of
time.  It doesn't attack rubber.  DOT5 fluid is also not hydroscopic (it
does not absorb water and will not mix with water).
It's only major advantage is that it doesn't attack paint, unlike
poly-glycol fluids.
DOT5 brake fluid also has higher dry and wet boiling points, which means
that it is better suited for extreme temperature situations.  However,
since it does not absorb water, any water (which is heavier than brake
fluid) that inevitably gets into the system will pool at the lowest
points (usually the calipers) and when that water boils it will affect
braking iin the same way that moisture in hydroscopic brake fluid does.
It will, over time, also cause corrosion of caliper pistons.  Also, as
it approaches its boiling point,
DOT5 fluid will become slightly compressible -- hence a spongy brake
feel.  Lastly, silicone and poly-glycol fluids are incompatible and
should therefore never be mixed.  So if you really want to switch to
DOT5, you'll need to disassemble and thoroughly clean the ENTIRE system.

So the recommendation against using DOT5 is correct, but not for the
reason given.

Neil


- ----- Original Message -----
From: "Nathan Maher" <nate@xxxxxxxxxx>
To: <ST@xxxxxxxxxxxxxx>
Sent: September 30, 2004 8:59 AM
Subject: RE: [ST] Tech Info


> Matt,
>
> Call me crazy, but I was under the impression that the stock lines on 
> my RS were already braided SS, that's straight from the mechanics 
> mouth, at least the front anyway.
>
> Can someone set the record straight?
>
> Nate
> 00SprintRS
>
> --Original Message-----
> From: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx]On Behalf Of 
> Heyer, Matthew A.
> Sent: Thursday, September 30, 2004 11:31 AM
> To: ST@xxxxxxxxxxxxxx
> Subject: [ST] Tech Info
>
> 1 - DOT5 brake fluid.  This should not be used on our bikes.  The 
> reason is that DOT5 fluid can have an ill effect on the rubber in our 
> brake lines.  You can use DOT5 brake fluid if you change your brake 
> lines (like to stainless steel braided).
>
> Matt Heyer
>
>
>
>
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*   *
>       The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
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>


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*   *
      The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
          http://www.TriumphNet.com/st/lilley for more info
   http://www.TriumphNet.com/st for ST, RS and Mailing List info


     *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
      The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
          http://www.TriumphNet.com/st/lilley for more info
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