Lotus Elan

Brake pads

PostPost by: mct340 » Sat Jul 09, 2005 7:20 pm

Thanks to all regarding tire pressures.....

Now.... who's making a good type of pads for autocross these days?

I am running stock S4 sprint calipers with braided lines and no servo.

By the way, the car is winning it's class in my region, thanks in part to the members of this website. I think I could do a better job however, if the brakes bit a little harder especially when cold.

http://www3.telus.net/public/miketodd/IACS2_06.jpg
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PostPost by: jrwiseman » Sun Jul 10, 2005 12:02 am

Car looks good at speed. What region are you running in ?

John

PS
Topeka is a nice place to run your Elan in September :)

[quote="mct340"]Thanks to all regarding tire pressures.....

Now.... who's making a good type of pads for autocross these days?

I am running stock S4 sprint calipers with braided lines and no servo.

By the way, the car is winning it's class in my region, thanks in part to the members of this website. I think I could do a better job however, if the brakes bit a little harder especially when cold.

http://www3.telus.net/public/miketodd/IACS2_06.jpg[/quote]
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PostPost by: mct340 » Sun Jul 10, 2005 2:25 am

John,
Well Toto, we're not in Kansas anymore.....we're on Vancouver Island British Columbia, Canada. :lol:
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PostPost by: type26owner » Sun Jul 10, 2005 8:23 pm

Mike,
I like these Carbon/Kevlar ones. They are expensive. I'm using the BLUE rated ones for trackdays. You might consider the RED ones if you don't get the brakes temps above 1200F autocrossing. They should give plenty of braking friction. They work great when stone cold and soaking wet. :D

Best to call Lee and get his advice.
http://www.leechapmanracing.com/kfp_magnum_pads.htm
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PostPost by: steveww » Tue Jul 12, 2005 9:45 am

I use EBC Green on the front and black on the rear. It also has slotted disks on the front. This set up works well for me and I have not yet managed to have any brake fade even when giving it a good thrashing :D
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PostPost by: rgh0 » Tue Jul 12, 2005 11:12 am

I am no autocross braking specialist but the things I would look for would be:

1. Disks in good condition, recently machined and not glazed or with wear grooves.

2. Pads with high coefficent of friction ( about .5) from cold. EBC green stuff or similar pads give good performance from cold plus high temperature performance that would be more than good enough for most autocross courses I would believe. Carbon Kevlar pads from various manufacturers give similar performance from cold but much more expensive as they have better ultimate high temperature life and performance, really only need for track racing applications with sustained high speed braking.

3. Slotted and spotted disks ( EBC make them) give better initial bite than plain disks and work better in wet and at high temperatures.

4. A booster will give better iniital bite than an unboosted system but less control on the limit. If you dont have a booster learn to mentaly adjust from the brake pressures you are used to in your road car and be prepared to give the brake pedal a decent push.

5. Minimum disk run out will minimise pad knock off and pedal travel until the brakes start to work.

6. In an Elan with modern sticky tyres you need to restrict rear braking versus front as weight transfer to front much greater than orginally designed for. Use lower coefficent pads at rear or install a rear pressure limiting valve.

Rohan
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PostPost by: type26owner » Tue Jul 12, 2005 3:54 pm

Hey Mike,
I'm also no autocross expert but I do understand tweaking the supension. You might try toeing out the fronts rather than the normal toe-in. This will increase the ackerman at large steering angles which should increase the grip a bit at those low speeds (it's greatly dependent on the slip angle of your tires though). You don't really need the braking stability that front toe-in provides you at high speed anyways.
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PostPost by: jrwiseman » Sat Jul 16, 2005 4:23 pm

mct340 wrote:John,
Well Toto, we're not in Kansas anymore.....we're on Vancouver Island British Columbia, Canada. :lol:


Well its a bit of a ride/tow from where you are at :) I will try and take some pictures this year. The entry list can be seen at

http://ams.scca.com/netforum/eweb/dynam ... 801c617a5f

enjoy
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