[Mikko Nassi]

Interesting stuff on the wet.

I have a few more questions that I hope others will benefit from as well:

-Does ambient temperature have a big effect on brake pad choice? Most of the time we race in 30C+ heat over here.

-As you mentioned you're not supposed to bed-in a new set of brake pads on a new disc. What do you do if you have a brand new kart and no old parts for it?

This brake disc need to run in a balanced state too.........at 14,000 revolutions per minute, this disc is shaking the hell out of your back axle,

I assume you mean 14,000rpm at the engine not the axle.

No i'm not a dealer directly.. i do race in a dealer's team.

[brakeguru]

I have painstakingly looked at the previous insertions of the post about bedding in and running in discs............I cannot see this what you have put?

Ambient temperatures

All types of brake products are now man made fibres we lost asbetos because of its harmful effects to health and this fibre (Asbestos) was really great for heat.....and because that cannot be used in any brake pad material anymore, we have to treat pad materials slightly friendlier........but now the fibres have change (in the make up of the pad materials) ambient temperature plays around with the ooperating temperatures of the brakes too.

Here is the UK, take a normal 206mm kart disc and a set of brake pads for a kart..........when the driver operates the brake pedal at maximum braking, the disc is running around 600 degrees centigrade....as the pad is small / surface area is small too, so it maximises the heat being transferred derivied from the 'friction' that the pad has created by being operated.

The data that was collected at these readings, the ambient temperature was approximately 25/6 degrees C............If these fibres were subjected to increased ambient temperatures (30) C, then the result would be they would react quicker to their function (pad material) and also, the metal brake disc would already have a different temperature to initially operate from too..Probably why, I have found that some of your brake pad materials would not be completely compatible working here in the UK because, it is a colder climate and also, you have such a vast choice of pads as you are closer to Countries like China.

So in answering your question, yes I believe that ambient temperatures would play a significant part of your braking performances and varying materials to would have an affect too in their operating temperatures.

[brakeguru]

Interesting stuff on the wet.

I have a few more questions that I hope others will benefit from as well:

-Does ambient temperature have a big effect on brake pad choice? Most of the time we race in 30C+ heat over here.

-As you mentioned you're not supposed to bed-in a new set of brake pads on a new disc. What do you do if you have a brand new kart and no old parts for it?

This brake disc need to run in a balanced state too.........at 14,000 revolutions per minute, this disc is shaking the hell out of your back axle,

I assume you mean 14,000rpm at the engine not the axle.

No i'm not a dealer directly.. i do race in a dealer's team.

Yes, 14,000 RPM at the engine...............apologies if it mis lead you.

New materials / components such as a brake disc..........and pads........I cannot see where I put this statement as it is incorrect.

[Mikko Nassi]

Thanks again for taking the time to answer, it's great to have someone that really knows what they're talking about.

Nice info on asbestos... and good that it isn't used anymore.

I misread your comment on bedding-in on new brake discs - i read "is" when you typed "if" which completely changes what you wrote. Sorry about that.

[sweed speed]

Hi guys,

new on here as well but this seems to be a place for good information.

I recently bought an 08 evxx and am having braking issues. After 20min run cycles my rear caliper seems to be overheating and the pistons are not returning back into the housing. This is leaving me with a rock-hard pedal but almost no braking ability.

Is this Master cylinder related or caliper?

using DOT4 fluid and OTK pads. Not sure of the caliper part number but it's stock otk for 180mm brake system

Thanks in advance

[pistole]

- otk brakes are famous for being awful !!

- haha , sorry !!!

.