Uprated Brakes

[Sprint36]

Lewis,<br>
<br>
Can you tell me the dimensions of the discs in the Sprintparts kit please? Diameter and overall depth front to rear are most important.<br>
<br>
Cheers,<br>
<br>
David

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[LewisK]

No problems! I'll get the calipers out in a bit and go measure 'em.<br>
<br>
They are designed to fit under standard Sprint alloys if that helps, mind <!--EZCODE EMOTICON START :) --><img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)"><!--EZCODE EMOTICON END-->

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[Sprint36]

Discs not calipers!!<br>
<br>
David

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[MaddMart]

<!--EZCODE EMOTICON START :lol --><img src=http://www.ezboard.com/images/emoticons/laugh.gif ALT=":lol"><!--EZCODE EMOTICON END-->

<p>Martin<br>
<br>
<!--EZCODE LINK START--><a href="http://www.dolomitesprint.com/" target="top">www.dolomitesprint.com</a><!--EZCODE LINK END--></p><i></i>

[LewisK]

Vernier calipers! <br>
<br>
<!--EZCODE EMOTICON START :lol --><img src=http://www.ezboard.com/images/emoticons/laugh.gif ALT=":lol"><!--EZCODE EMOTICON END-->

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[SprintV8]

The Chris Witter Brake Kit will only fit the Stag/2000/2500 Range or a Dolomite Sprint that's already fitted with the Stag Hub Brake Arangement like mine<!--EZCODE EMOTICON START ;) --><img src=http://www.ezboard.com/images/emoticons/wink.gif ALT=";)"><!--EZCODE EMOTICON END--> <!--EZCODE EMOTICON START ;) --><img src=http://www.ezboard.com/images/emoticons/wink.gif ALT=";)"><!--EZCODE EMOTICON END--> <br>
<br>
<!--EZCODE IMAGE START--><img src="http://i87.photobucket.com/albums/k159/ ... WBrake.jpg" style="border:0;"/><!--EZCODE IMAGE END-->

<p>1980 Dolomite SprintV8 (In the process of modifying the Alloy sump)<br>
2002 Citroen Xsara 2.0 HDi Estate.... Part's delivery Vehicle.<br>
Alloy Carb Mount's fit and forget or keep changing the RUBBER one's.<br>
<br>
</p><i>Edited by: <A HREF=http://p206.ezboard.com/bthetriumphdolo ... printV8</A> at: 21/9/06 9:05 pm<br></i>

[Sprint36]

Lewis,<br>
<br>
Did you manage to measure the discs?<br>
<br>
David

<p></p><i></i>

[LewisK]

Hi, Yes! Sorry about the delay, packing for Uni <!--EZCODE EMOTICON START :) --><img src=http://www.ezboard.com/images/emoticons/smile.gif ALT=":)"><!--EZCODE EMOTICON END--> <br>
<br>
I'll put up the diagram tomorrow morning for you - currently AWOL from my own machine <!--EZCODE EMOTICON START :lol --><img src=http://www.ezboard.com/images/emoticons/laugh.gif ALT=":lol"><!--EZCODE EMOTICON END-->

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[dollyboy]

does anyone on here have experience of adding additional standard caliper to other side of vertical link?<br>
<br>
does it work/make much difference?<br>
<br>
<!--EZCODE EMOTICON START :rolleyes --><img src=http://www.ezboard.com/images/emoticons/eyes.gif ALT=":rolleyes"><!--EZCODE EMOTICON END-->

<p>project orange - gradual progress<br>
project STEALTH - PASS!!! <br>
project white - AAARGGGHHH!!! too many cars!!!</p><i></i>

[davepoth]

I dunno how much use it would be. You'd need to beef up the hydraulics as there would be a need for extra pressure in the system, and the puny discs would have twice as much heat going into them. I reckon it would work really well for one stop, but then the discs would be knacked.

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[LewisK]

Right, here you go - the dimensions for the Sprintparts disc.<br>
<br>
These are a bit approximate as it's in plastic covering to stop it corroding <!--EZCODE EMOTICON START :lol --><img src=http://www.ezboard.com/images/emoticons/laugh.gif ALT=":lol"><!--EZCODE EMOTICON END--> <br>
<br>
Total disc diameter : 220mm<br>
Central hub diameter : 134mm<br>
Central hole diameter : 65mm<br>
Disc width : 20mm<br>
Hub width : 18mm<br>
Overall width : 38mm<br>
<br>
Sorry for them being approximate, I packed my calipers away so can't get a decent reading off the disc.<br>
<br>
As mentioned tho, it should (according to their site) fit behind standard Sprint alloys - I believe them, at least <!--EZCODE EMOTICON START :lol --><img src=http://www.ezboard.com/images/emoticons/laugh.gif ALT=":lol"><!--EZCODE EMOTICON END--> <br>


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[LewisK]

And this :<br>
<br>
Rear of disc to rear of hub face : 33~mm

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[tinweevil]

Conservation of energy, energy cannot be created or destroyed only converted from one form to another. Brakes convert kinetic energy into heat energy. Having twice the friction surface can't produce any more heat unless you drive faster 'cos your brakes are better. <br>
<br>
Dual calipers <!--EZCODE ITALIC START--><em>would</em><!--EZCODE ITALIC END--> have the advantage that you could do more stops before you overheat your fluid because you have a greater specific volume to heat.<br>
<br>
Dual calipers <!--EZCODE ITALIC START--><em>may</em><!--EZCODE ITALIC END--> allow you to do lots and lots more stops without overheating because you have a greater heated volume and so a greater surface area to disperse heat. They may even cure the problem but I wouldn't bet on it.<br>
<br>
Dual calipers <!--EZCODE ITALIC START--><em>may</em><!--EZCODE ITALIC END--> overheat and warp your disks over repeated stops if the second set of pads etc cannot remove heat from the disks as fast as the plain air they replace. On the other hand they may be able to remove heat faster and so be a benefit.<br>
<br>
Dual calipers <!--EZCODE ITALIC START--><em>will</em><!--EZCODE ITALIC END--> reduce handling performance because of the increased unsprung mass. You might be able to negate this if Canley ever get their reproduction alloy calipers online but a kit like Scotts, Sprintparts or Sierra (spit) will be cheaper.<br>
<br>
Dual calipers <!--EZCODE ITALIC START--><em>will not</em><!--EZCODE ITALIC END--> increase the pressure in the system, only pushing harder on the pedal can do that. The same pressure on the pedal will result in the same pressure on the disk but over twice the area leading to a greater retardation effect. If anything you'll have to push the pedal further but less hard to stop at the same rate of retardation. I think. This would result in finer control of your brakes and with practice allow you to get closer to the friction limit of your tyres on each stop.<br>
<br>
Where'd I leave that coat?<br>
<br>
Tinweevil<br>


<p>1978 <!--EZCODE LINK START--><a href="http://www.triumphowners.com/704">Dolomite Sprint</a><!--EZCODE LINK END--> Blue, a bit tetley. - Current daily drive.<br>
1972 <!--EZCODE LINK START--><a href="http://www.triumphowners.com/754">Spitfire IV</a><!--EZCODE LINK END--> No name, in bits.<br>
1968 <!--EZCODE LINK START--><a href="http://www.triumphowners.com/705">GT6 II</a><!--EZCODE LINK END--> Little blue, nice!<br>
1973 <!--EZCODE LINK START--><a href="http://www.triumphowners.com/755">Dolomite Sprint</a><!--EZCODE LINK END--> VA41, seriously tetley.<br>
1980 <!--EZCODE LINK START--><a href="http://www.triumphowners.com/864">Dolomite 1500HL</a><!--EZCODE LINK END--> Orange, really quite tidy.</p><i></i>

[davepoth]

I think I may have accidentally picked it up on the way out...<br>
<br>
<!--EZCODE EMOTICON START :o --><img src=http://www.ezboard.com/images/emoticons/embarassed.gif ALT=":o"><!--EZCODE EMOTICON END--> <br>
<br>
<!--EZCODE EMOTICON START :D --><img src=http://www.ezboard.com/images/emoticons/happy.gif ALT=":D"><!--EZCODE EMOTICON END-->

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[dollyboy]

hmmmmmm.<br>
<br>
could be worth an experiment then...<br>
<br>
<!--EZCODE EMOTICON START :rolleyes --><img src=http://www.ezboard.com/images/emoticons/eyes.gif ALT=":rolleyes"><!--EZCODE EMOTICON END-->

<p>project orange - gradual progress<br>
project STEALTH - PASS!!! <br>
project white - AAARGGGHHH!!! too many cars!!!</p><i></i>