Air heart mechanical brakes

[xxmiaja]

Can anyone tell me how to tighten up my brake caliber to the frame, it is flopping around on the bracket. the caliber assembly slides on the mount of the gokart frame but there is no way to tighten the caliber to the mount on the frame, therefore the entire assembly flopps around on the gokart

 

[itsid]

bad angle to judge what might be sloppy..

but the caliper NEEDS to float, that's why it's a sliding bracket

like that one for example


'sid

 

[xxmiaja]

Yes, it looks just like that but, the caliber slides back and forth on the bracke, and also every time I adjust the brakes after a day or two usage they have to be adjusted again...is this normal

 

[mckutzy]

I have them on my bike, they seem to need adjustment often. I don't ride my bike that much, but I know I look at them before each ride, just in case.
If the caliper really moves alot, Check to see if the rotor isn't warped.

Prop up the kart, spin the axle, see the alignment. Alot of movement in the caliper will cause the pads to wear unevenly and thus need constant adjustment.

Just curious. How tight are you tightening the lock nut. It might be backing off.

 

[xxmiaja]

Thanks for your reply..The lock nut is very tight and I have to really put strength in it to get it loose.when I rode it tonight when I have to keep breaking it smells like burning rubber but they are stopping good for now

 

[mckutzy]

How straight is the axle. Is it warped by any means. That would certainly cause irratic movement with the caliper, like wise with the disc.

 

[Half-breeder]

Can anyone tell me how to tighten up my brake caliber to the frame, it is flopping around on the bracket. the caliber assembly slides on the mount of the gokart frame but there is no way to tighten the caliber to the mount on the frame, therefore the entire assembly flopps around on the gokart

That's the unfortunate 'design' of that setup. I too use the same caliper however, I designed a bracketing system that held the caliper firm and stable... and I allow the disk to do the sliding. Not positive(from the pics) if 'you' are 'able' to fashion up a simular setup... but anything is possible.

... and Ive never had to adjust my brake.

 

[itsid]

Tihm, don't get me wrong.. but is that a good idea?

I mean just thinking about it I'd rather have the -loose- part stationary than rotating.
any small imbalance in the disc is already bothering if the disc is fixed,
I don't think I would want to see such imbalance on a disc that's allowed to move *shrugs*

Also the disc is much larger (from it's mounting point to the contact surface)
than the caliper, thus the lever is bigger and the part (in that case the disc)
is more likely to encounter unwanted forces...
and it's more unlikely that the disc slides at all!

But it's hard to judge without even seeing a picture, so
it might work, but from here I'd say it's much more difficult than to have the caliper and it's bracket set up correctly and what's more... less reliable.

'sid

 

[Half-breeder]

Tihm, don't get me wrong.. but is that a good idea?

I mean just thinking about it I'd rather have the -loose- part stationary than rotating.
any small imbalance in the disc is already bothering if the disc is fixed,
I don't think I would want to see such imbalance on a disc that's allowed to move *shrugs*

Also the disc is much larger (from it's mounting point to the contact surface)
than the caliper, thus the lever is bigger and the part (in that case the disc)
is more likely to encounter unwanted forces...
and it's more unlikely that the disc slides at all!

But it's hard to judge without even seeing a picture, so
it might work, but from here I'd say it's much more difficult than to have the caliper and it's bracket set up correctly and what's more... less reliable.

'sid

Well... I agree(w/ his kart). Asfar as mine is concerned, the hub I got for the disk was designed for the option of stationary or floating... his... not too sure.

Also when I designed/fabbed my setup I took into the factor that the caliper if stationary... had a better chance of 'staying' adjusted... where as the disk had no 'adjustments' to vibrate loose.

 

[xxmiaja]

Thanks for all reply guys.i will look into a floating disc,however I kinda want to stay within how the car was originally designed I will do more research to see which is more reliable

 

[mckutzy]

An idea, find a floating rear disc from a motorcycle. It has a fixed hub, but a floating rotor assembly on its perimeter.

If you have a disc allowed to float, it needs to be a really smooth shaft and keyway. You will defiantly need some collars. One, for a limit stop for the allowance of movement, and second to hold the key in place, in the keyway with the disc and shaft.