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This...
g.
You are working on this problem too hard. Or.....as once advised by an old,
successful pro racer "more throttle, less brake"
The real issue to worry about is rear axles, front spindles and front and rear
hubs. Modern tires are the villain here, not brakes. Actually, modern tires
make the brake issue smaller.
-----Original Message-----
From: Mike Jackson <grandwazoo@earthlink.net>
To: Scott Janzen <sjanzen@me.com>; STEPHEN BOROWSKI <biznzman@pacbell.net>
Cc: FOT List <fot@autox.team.net>
Sent: Tue, Dec 1, 2015 6:37 pm
Subject: Re: [Fot] Race Car Brake Calipers
I had planned on staying out of this but my fingers have over ruled my brain....
My poor old TR3 has NEVER faded a brake at any race anywhere! That includes an
amazing bumper to bumper race with an ex IMSA, 6cyl Vitesse at Road America at
a previous TR reunion. I led him twice and we finished with a separation of a
few inches. There was no other 4 cyl Triumph within sight. Similarly at
tracks as brutal on brakes as Sebring at the 12 hr support race. Ran it many
times. NO FADE, even at the old hairpin config.
You are working on this problem too hard. Or.....as once advised by an old,
successful pro racer "more throttle, less brake"
The real issue to worry about is rear axles, front spindles and front and rear
hubs. Modern tires are the villain here, not brakes. Actually, modern tires
make the brake issue smaller.
Mike Jackson
-----Original Message-----
From: Scott Janzen
Sent: Dec 1, 2015 2:59 PM
To: STEPHEN BOROWSKI
Cc: FOT List
Subject: Re: [Fot] Race Car Brake Calipers
Brakes are definitely a limiting factor in many vintage cars. One of the
things that keep them vintage. The rules for the three clubs below essentially
say - calipers of the same size and number of pistons, rotors ditto.
SVRA says - 3. Alternate rotors and drums of the same diameter and thickness
are permitted. Rotors may bedrilled or grooved.
4. Alternate calipers or wheel cylinders must be of the same material, design
and number of pistonsas the original component. There must be no increase in
the frictional surface of the pads or shoes
VRG - Brakes must be the original type (disc, drum), size, and design as
supplied by the manufacturer, or listed option, for the model. Updating from
drum to disc will result in reclassification if eligibility timeline (e.g.
1960) is crossed. Lining and pad materials are free. Rotors may be drilled or
grooved, but must be same diameter, thickness, and material as originally
supplied. Modern aftermarket calipers are not permitted.
VDCA - Braking systems must be of the same type as standard for the year of
manufacture or as homologated by the original manufacturer for that year.
Updating or backdating is not allowed.
1. Aftermarket brake calipers are prohibited
On Dec 1, 2015, at 2:24 PM, STEPHEN BOROWSKI wrote:
Hello All,
I am starting the selection for front brakes on my TR4 racer. Naturally the old
stock ones are out. Are the Toyota four piston calipers good enough? They are
less expensive and easy to get, with disks and assorted pads. Which after
market models work well and bolt wright in? Which disks work the best and last?
10 inch, 10.5 inch -- bigger or smaller?
All comments are welcome!
Thank You,
Steve & Matthew
Florida TR4 Racing
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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<font color='black' size='2' face='Arial, Helvetica, sans-serif'>Th<font
size="2">is...<br>
g.<br>
</font>
<div> <br>
</div>
<div style="font-family:arial,helvetica;font-size:10pt;color:black"><blockquote
style="border-left: 2px solid blue; padding-left: 3px;">
<div>You are working on this problem too hard. Or.....as once advised by
an old, successful pro racer "more throttle, less brake"</div>
<div><br>
</div>
<div>The real issue to worry about is rear axles, front spindles and front and
rear hubs. Modern tires are the villain here, not brakes. Actually,
modern tires make the brake issue smaller.</div>
<div></div>
</blockquote></div>
<div> <br>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div
style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original
Message-----<br>
From: Mike Jackson <grandwazoo@earthlink.net><br>
To: Scott Janzen <sjanzen@me.com>; STEPHEN BOROWSKI
<biznzman@pacbell.net><br>
Cc: FOT List <fot@autox.team.net><br>
Sent: Tue, Dec 1, 2015 6:37 pm<br>
Subject: Re: [Fot] Race Car Brake Calipers<br>
<br>
<div id="AOLMsgPart_1_5e23cd5b-d708-4a67-92ce-568bdd54ca0c">
<style type="text/css"
scoped="">#AOLMsgPart_1_5e23cd5b-d708-4a67-92ce-568bdd54ca0c td{color: black;}
.aolReplacedBody DIV {margin:0px;} </style>
<div class="aolReplacedBody">
<div style="font-size: 16px;color: rgb(0, 0, 0);font-family: arial,
sans-serif;">I had planned on staying out of this but my fingers have over
ruled my brain....
<div><br>
</div>
<div>My poor old TR3 has NEVER faded a brake at any race anywhere! That
includes an amazing bumper to bumper race with an ex IMSA, 6cyl Vitesse at Road
America at a previous TR reunion. I led him twice and we finished with a
separation of a few inches. There was no other 4 cyl Triumph within
sight. Similarly at tracks as brutal on brakes as Sebring at the 12 hr
support race. Ran it many times. NO FADE, even at the old hairpin
config.</div>
<div><br>
</div>
<div>You are working on this problem too hard. Or.....as once advised by
an old, successful pro racer "more throttle, less brake"</div>
<div><br>
</div>
<div>The real issue to worry about is rear axles, front spindles and front and
rear hubs. Modern tires are the villain here, not brakes. Actually,
modern tires make the brake issue smaller.</div>
<div><br>
</div>
<div>Mike Jackson<br>
<br>
<blockquote style="padding-left: 5px; margin-left: 0px; border-left: #0000ff
2px solid; font-weight: normal; font-style: normal; text-decoration: none;
font-size: 10pt; font-family: arial,sans-serif; color: black;">-----Original
Message-----
<br>
From: Scott Janzen
<br>
Sent: Dec 1, 2015 2:59 PM
<br>
To: STEPHEN BOROWSKI
<br>
Cc: FOT List
<br>
Subject: Re: [Fot] Race Car Brake Calipers
<br>
<br>
Brakes are definitely a limiting factor in many vintage cars. One of the
things that keep them vintage. The rules for the three clubs below
essentially say - calipers of the same size and number of pistons, rotors ditto.
<div><br>
</div>
<div>SVRA says - <span class="Apple-style-span" style="font-family: Arial;
font-size: 12px; ">3. Alternate rotors and drums of the same diameter and
thickness are permitted. Rotors may be
drilled or grooved.</span>
<div class="column">
<div><span style="font-size: 9.000000pt; font-family: 'Arial'">4. Alternate
calipers or wheel cylinders must be of the same material, design and number of
pistons
as the original component. There must be no increase in the frictional surface
of the pads or shoes </span></div>
</div>
<div><span style="font-size: 9.000000pt; font-family: 'Arial'">VRG
- </span><span class="Apple-style-span" style="color: rgb(36, 93,
63); font-family: Arial, Helvetica, sans-serif; font-size: 14px; line-height:
18px; ">Brakes must be the original type (disc, drum), size, and design as
supplied by the manufacturer, or listed option, for the model. Updating
from drum to disc will result in reclassification if eligibility timeline (e.g.
1960) is crossed. Lining and pad materials are free. Rotors may be
drilled or grooved, but must be same diameter, thickness, and material as
originally supplied. Modern aftermarket calipers are not permitted.
</span></div>
<div>VDCA - <span class="Apple-style-span" style="color: rgb(153, 51, 0);
font-family: Geneva; ">Braking systems must be of the same type as standard for
the year of manufacture or as homologated by the original manufacturer for that
year. Updating or backdating is not allowed.</span></div>
<div class="MsoNormal" style="color: rgb(0, 0, 0); font-family: georgia, 'Times
New Roman', Times; font-size: medium; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height: normal; orphans:
auto; text-align: start; text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 204); text-indent: -20pt; margin-left: 38pt;"><font
color="#993300"><span style="font-family: Geneva;">1.<span style="font-style:
normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height:
normal; font-family: 'Times New
Roman';"> </span>Aftermarket brake
calipers are prohibited</span></font></div>
<div><br>
</div>
<div>
<div>On Dec 1, 2015, at 2:24 PM, STEPHEN BOROWSKI wrote:</div>
<br class="Apple-interchange-newline">
<div>
<div style="color:#000; background-color:#fff; font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px">
<div id="yui_3_16_0_1_1448996838782_3858"><br>
Hello All,</div>
<div id="yui_3_16_0_1_1448996838782_3890">I am starting the selection for front
brakes on my TR4 racer. Naturally the old stock ones are out. Are the
Toyota four piston calipers good enough? They are less expensive and easy to
get, with disks and assorted pads. Which after market models work well and bolt
wright in? Which disks work the best and last? 10 inch, 10.5 inch -- bigger or
smaller?</div>
<div id="yui_3_16_0_1_1448996838782_3989">All comments are welcome!</div>
<div id="yui_3_16_0_1_1448996838782_3990"> </div>
<div id="yui_3_16_0_1_1448996838782_3991">Thank You,</div>
<div id="yui_3_16_0_1_1448996838782_3992">Steve & Matthew</div>
<div id="yui_3_16_0_1_1448996838782_3993">Florida TR4 Racing</div>
</div>
</div>
_______________________________________________<br>
<a target="_blank" href="mailto:fot@autox.team.net";>fot@autox.team.net</a><br>
<br>
<a href="http://www.fot-racing.com";
target="_blank">http://www.fot-racing.com</a><br>
<br>
Archive: <a href="http://www.team.net/archive";
target="_blank">http://www.team.net/archive</a><br>
Forums: <a href="http://www.team.net/forums";
target="_blank">http://www.team.net/forums</a><br>
<br>
<br>
</div>
<br>
</div>
</blockquote></div>
</div>
</div>
</div>
_______________________________________________<br>
<a href="mailto:fot@autox.team.net";>fot@autox.team.net</a><br>
<br>
<a href="http://www.fot-racing.com";
target="_blank">http://www.fot-racing.com</a><br>
<br>
Archive: <a href="http://www.team.net/archive";
target="_blank">http://www.team.net/archive</a><br>
Forums: <a href="http://www.team.net/forums";
target="_blank">http://www.team.net/forums</a><br>
<br>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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