17 replies to this topic

[stuart bowes]

handbraking doesn't quite test the rear brakes under the same circumstances though

 

firstly you're pulling the shoes out with a lever mechanism which has no bearing on the way the hydraulics are operating and secondly the car isn't made to pitch forward so the suspension / composition of the car isn't affected in the same way

 

it's fun though 

Edited by stuart bowes, Yesterday, 07:35 PM.

[coopertaz]

 

Thanks everyone.

It's not a historic car dodging MOT's, tax & ULEZ.  It dodges tax & ULEZ for sure......but has an MOT and was tested on brake rollers and passed very recently.

I need to dig into this issue a bit further to see if its a big mismatch across front pair/rear pair.

The car does have all new brake pipework etc. and is servo-assisted.

I will ask for a retest of the brakes across each axle (front/rear).

I just find it strange that it "jinks" arse-end out and right.  :)

 

It`s no surprise it passed an MOT recently as unless they are very familiar with classic minis a good strong reading on the rollers is a pass.

More likely it locked up on the rollers which is also a pass but in reality it`s a dangerous scenario that needs addressing on a ten foot long car with most of it`s weight on the front.

Raise the rear of the car and have an assistant press the brake pedal then give the rear wheels a good hard turn and you should be able to turn them with a good level of resistance.

Try different levels of pedal pressure but if the rear wheels are locked solid off the foot brake there is your problem. It could be wet/leaking or the wrong cylinders or a dodgy limiter valve.

 

any decent mot centre will also check for imbalance on partial brake application aswell as full locked up pressure and any rollin resistance (drag) when released. gives a good guide to brake condition and adjustment when done correctly

[coopertaz]

can just remove rear drums to check for any leak or conatmination of the shoes, as stated above if not pulling steering then it is the rears at fault