Dingo disc brake sticking

[mr gunby]

After hard braking the disc does not release as it should.
All parts move freely. I added an additional return string, still sticks. Ideas?

 

[mckutzy]

If the pads/caliper is new, you will need to sand the pads. Take a piece of sandpaper(60-80) and work it between the disc and pads.
On my bike I have these calipers. And it had this exact same problem. Sanding helped this alot. It will eventually wear in properly, but it takes a bit due to the infrequent use.

If it just not releasing. The bullet might need lubrication, as it is the only part connected with the pad allowing it to stick. Also grease the track the caliper sits in.

 

[mr gunby]

Pads are not new. How do you get to"the bullet"? I'll try greasing the slides. Not a fan of grease and brakes, but will give it a shot. Thanks

 

[mckutzy]

The caliper has to be taken apart. The bullet is the actuator on the lever side of the caliper, under the arm.

Applying grease sparingly to the arm and bullet should help return movement.

 

[Clintmeister]

Ive had the same problems on a big murry go kart. Ive found all the linkages need to be lubed and the nut bolt assembly that holds them together need to have a gap between them for movement ( thats a good place to put 2 copper washers and lube it so it moves easily). Also check for kinks in the cable, that will stick inside its tube.

Rebuilding the caliper is easy.

Might look at the caliper to see how easily its moving too (inside).

Look at the disk and make sure its aligning up (directly in the middle) of the pads and adjust as needed.

 

[mr gunby]

Have taken the linkage apart cleaned and lubed all pivot points (I added stainless washers) the linkage moves freely. The disc floats on the axles, it also moves freely.
If I have to pull this whole thing apart, thinking I might as well upgrade to hydraulic. Does anyone make a direct fit caliper?

 

[Poboy kartman]

Where'd you run across a Digo? Those are very rare...(only 5 known in existence.....built by a hippie in California in the 70's).....

JK....(Sorry....I couldn't help myself.....)

 

[mr gunby]

I had to Digo deep for it. Can't say as I blame you. Tried to edit original subject line and I can't.
Can I buy an "N" please

 

[Poboy kartman]

Maybe you can find one of the sister karts he manufactured....under the company name 'CanU'.....model "Digit".....

 

[KartFab]

If you are going to spend any money on this, just get a new go kart mechanical caliper, they are like $40 and will last a long time. (the one you have on there now is about 20 yrs old)

Also, here's another thought, have you adjusted the brake so its almost engaged? if you leave too much slop in the pedal, it tends to lock up.

As long as the bullet and lever are clean/without divets/burrs you should be ok. I had to sand one dowwn with my dremel/bench grinder a little bit and then it worked well.

 

[mr gunby]

Found this one

 

[mckutzy]

Ya the calipers are fine, they are kinda finicky though.
Linkage I think, based on seeing the many vehicles using this type, is probably the main source of conflict for the problems of these mechanical brakes.

 

[mr gunby]

Thanks Kartfab. Just pulled it apart, Understand why it has to be adjusted so I can't go past the point of no return. But I believe my main issue is the 2 piece brake pad. Time to order new brake pads.

 

[mr gunby]

I have been thinking about floating disc. I can't think of any reason that the disc should be able to move on the axle. I have to remove the axle to replace the outboard brake pad, should I install a locking collar while I have it apart?

 

[mckutzy]

The disc floats like that, as to allow the caliper grab at whatever angle the disc maybe at. It's not so much a problem that it might allow the key walk out, then you will have problems.
I don't think you need to take off the axle to remove the caliper. If the disc floats already, just remove the axle covers, and whatever stops for the disc. Slide the disc and caliper over to remove, install in reverse.

 

[mr gunby]

Unfortunately the disc does not move far enough to the right to give me enough room to remove the brake pad or remove the left side of the caliper. There is a collar welded to the axel.

 

[KartFab]

You can't unbolt the caliper? It's bolted together by two bolts and splits in half. The collar was welded on there when it was built to keep the axle from sliding back and forth. It's a pain to disassemble the axle, but it is possible.

 

[mr gunby]

Even with the caliper split in half you cant get the left side off. It is between the frame and the disc. You can see how little space there is in picture.

 

[mr gunby]

All too aware of what a pain it s to disassemble the axle. I had to do it about a month ago when I upgraded to a 40 series T.C.. I had to move the drive sprocket to the right of the engine to get the T.C. to line up. Not looking forward to it.

 

[GreyW00lf]

"40 series TV." "to get the TV to line up"

poking fun at this
having fun watching T.v. eh on your axle?


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