Topica Loopframe_Guzzi Archive


Subject: Front Brakes

Author: Alacritas

Date: Nov 14, 2001, 1:31 AM

Post ID: 1708886328



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Hi everyone,

I have been having problems with my front brakes - or as some would say
- what front brakes. This despite sanding the pads and reajusting them.
I have tried the green pads - not happy with the results - Karl
Kologiski was writting recently that he was going to use them.

Ian A. heard about a guy who specializes in brakes for vintage
motorcycle racing enthousiasts. Another friend who races vintage bikes
also recommended this person. Neither of them told me that I was going
to meet a man who's life long passion has been and still is racing
motorcycles. Brian Henderson now races vintage class. I was with a
friend who had seen him race and crash -rather spectacularly- at
Mosport. He also owns a Lemans and has a soft spot for Guzzi's. The
brake linings Brian installs are Vintage Brake 2520V.

What follows is direct quote from tech info:

2520V is a semi-flexible molded, non-asbestos high friction material,
light gray in color, suitable for riveted and bonded applications. It
has unit pressures, rotational speed, and coefficient of friction
applicable to mechanical drum brake motorcycle use. This is a layered
type of material, and care must be exercise in riveting, as over
clenching can produce fractures between the layers. It includes small
chippings of copper, brass, and cast iron as frictin modifiers in a
water resistant rubber based binder. It is suitable for use in dry, wet
and oil immersion.

For a high friction material, it is considered kind to cast iron drums;
steel liners experience an increase wear factor of 3 to 4 % at a 12 to
15% reduction in coefficient of friction. Dry, cold performance is very
good, but improves to in excess,5COF with heat. Preheating is not
necessary, as glazing is not a problem, but recommended in racing
applications.

SAE J661 test curves show a virtually flat coefficient of friction vs.
temperature response from 200 degrees F to in excess of 650 degrees F.
In addition, fade recovery is complete and virtually instantaneous.

Just passing on the info - and with the fall of the canadian dollar what
a deal for most of you! If anyone wants - I can send them Brian's
address. He doesn't have internet. I will have new brakes for next
season and hopefully will not have to go to another Guzzi rally without
my Eldorado! (next project before Xmas is getting the forks apart...and
back together)

Ciao,
Elisabeth
72 Eldorado
98 Tigger





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Hi everyone,
<p>I have been having problems with my front brakes - or as some would
say - what front brakes. This despite sanding the pads and reajusting
them. I have tried the green pads - not happy with the results - Karl
Kologiski was writting recently that he was going to use them.
<p>Ian A. heard about a guy who specializes in brakes for vintage motorcycle
racing enthousiasts. Another friend who races vintage bikes also recommended
this person. Neither of them told me that I was going to meet a man who's
life long passion has been and still is racing motorcycles. Brian
Henderson now races vintage class. I was with a friend who
had seen him race and crash -rather spectacularly- at Mosport. He also
owns a Lemans and has a soft spot for Guzzi's. The brake linings
Brian installs are Vintage Brake 2520V.
<p><b>What follows is direct quote from tech info</b>:
<p>2520V is a semi-flexible molded, non-asbestos high friction material,
light gray in color, suitable for riveted and bonded applications. It has
unit pressures, rotational speed, and coefficient of friction applicable
to mechanical drum brake motorcycle use. This is a layered type of material,
and care must be exercise in riveting, as over clenching can produce fractures
between the layers. It includes small chippings of copper, brass, and cast
iron as frictin modifiers in a water resistant rubber based binder. It
is suitable for use in dry, wet and oil immersion.
<p>For a high friction material, it is considered kind to cast iron drums;
steel liners experience an increase wear factor of 3 to 4 % at a 12 to
15% reduction in coefficient of friction. Dry, cold performance is
very good, but improves to in excess,5COF with heat. Preheating is
not necessary, as glazing is not a problem, but recommended in racing applications.
<p>SAE J661 test curves show a virtually flat coefficient of friction vs.
temperature response from 200 degrees F to in excess of 650 degrees F.
In addition, fade recovery is complete and virtually instantaneous.
<p>Just passing on the info - and with the fall of the canadian dollar
what a deal for most of you! If anyone wants - I can send them Brian's
address. He doesn't have internet. I will have new brakes for next season
and hopefully will not have to go to another Guzzi rally without my Eldorado!
(next project before Xmas is getting the forks apart...and back together)
<p>Ciao,
<br>Elisabeth
<br>72 Eldorado
<br>98 Tigger
<br>
<br>


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