Author Topic: Front Brake Issue  (Read 3430 times)

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#20

Offline XCaTel

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Re: Front Brake Issue
Reply #20 on: October 13, 2020, 05:15:43 PM
Ah, OK. You could add a partially collapsed wheel bearing to the "investigate" list then. The good news on those is that they are cheap too. There are only so many causes, shouldn't be too hard to find.

#21

Offline Will Morgan

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Re: Front Brake Issue
Reply #21 on: October 13, 2020, 05:32:54 PM
*Originally Posted by andrewr138 [+]
The tire took a hit and that’s when all of this started.

Well I'd have started my investigations from that point = assess for impact damage to discs or caliper mounts rather than checking for internal problems in the calipers (seals, pistons etc) or the pads. If a disc doesn't run true in its caliper it can cause greater problems than might be expected.

#22

Offline andrewr138

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Re: Front Brake Issue
Reply #22 on: October 13, 2020, 06:30:56 PM
After all this, the dealer said it’s normal. Though that maybe the impact knocked some air out of the line which is why it engages sooner. Perhaps it was all in my head.

#23

Offline MarksMotorCycleParts

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Re: Front Brake Issue
Reply #23 on: October 13, 2020, 06:48:53 PM
the impact knocked some air out of the line
- nonsense.
And if you can't spin the wheel freely when its off the ground then its not normal.

If there was air in the line your brakes wouldn't have worked properly. However you should start from first principles and check things in order.

1, Calipers off (or just pads out), does the wheel spin freely? If no then its the wheel bearings.
2, If yes, then do the discs run true? If no then the discs are warped
3, Have you overfilled the reservoir when you bled the brakes? Reassemble everything then try drawing some fluid out of the bleed nipple and see if the brakes stop dragging.

#24

Offline andrewr138

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Re: Front Brake Issue
Reply #24 on: October 13, 2020, 08:53:11 PM
It free spins, but there is some friction with the calipers on.

It free spins well with calipers off. The discs looked straight per my eye. And the reservoir isn't overfilled. I used your manual to do the job.  :169:

#25

Offline MarksMotorCycleParts

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Re: Front Brake Issue
Reply #25 on: October 14, 2020, 09:33:38 AM
Do you feel some resistance when pushing the bike forwards? If No then everything is normal and the pads are lightly contacting the discs. If Yes then you have some brake drag.
Does one disk feel warmer than the other after a ride? If a one side is dragging you'll feel which one by holding a had a centimeter away from the discs.

#26

Offline andrewr138

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Re: Front Brake Issue
Reply #26 on: October 14, 2020, 02:56:27 PM
*Originally Posted by MarksMotorCycleParts [+]
Do you feel some resistance when pushing the bike forwards? If No then everything is normal and the pads are lightly contacting the discs. If Yes then you have some brake drag.
Does one disk feel warmer than the other after a ride? If a one side is dragging you'll feel which one by holding a had a centimeter away from the discs.

No more resistance than what I’m used to.

Rode to work, and both discs were the same temp and warm to the touch.

The only thing that annoys me is the catch point being sooner. Any way to change that?

#27

Online Chippy4467

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Re: Front Brake Issue
Reply #27 on: October 14, 2020, 03:52:36 PM
The only thing that annoys me is the catch point being sooner. Any way to change that?
Span adjuster on lever?
Chippy

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#28

Offline MarksMotorCycleParts

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Re: Front Brake Issue
Reply #28 on: October 14, 2020, 04:09:00 PM
If both were warm to touch as opposed to hot, I'd say you don't have a problem.

+1 to the span adjuster but it still begs the question, how did the effective brake-biting-point change?

#29

Offline andrewr138

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Re: Front Brake Issue
Reply #29 on: October 14, 2020, 04:12:09 PM
*Originally Posted by MarksMotorCycleParts [+]
If both were warm to touch as opposed to hot, I'd say you don't have a problem.

+1 to the span adjuster but it still begs the question, how did the effective brake-biting-point change?

Good question. And my adjustable lever is all the way in.