Sharp front brake

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Isettaman
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Sharp front brake

Postby Isettaman » Wed Jan 24, 2018 10:34 pm

Hi
I'm fairly new to the K75, and to disc brakes - my previous bike being a '56 Triumph Speed Twin.
My query is that the front brake is very sharp, not progressive like I think it should be. The sharpness is consistent
so not indicative of a warped disc, I believe.
Has anyone any thoughts on this?
Cheers
Dave
Life's too short to be miserable

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george baker
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Re: Sharp front brake

Postby george baker » Wed Jan 24, 2018 11:31 pm

hi
welcome, where are you based

my k75 feels Progressive to me and i get variable amount of squeaking with lever Pressure

if you are local you can try my k75

george
Member 21, R100R, K75 and a Hyosung 250 FOR SALE

Isettaman
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Re: Sharp front brake

Postby Isettaman » Wed Jan 24, 2018 11:53 pm

Hi George
Thanks for the reply.
I'm in Wakefield so may take you up on your offer when the weather improves!
Would it have anything to do with adjustment at all?
Dave
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Inge K.
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Re: Sharp front brake

Postby Inge K. » Thu Jan 25, 2018 7:51 am

Could be that your pads and/or pistons don't move as smooth as they should.
If so your brakes should also drag a bit just after they have been applied.....
and then dismantle, clean, lubricate as needed.

Isettaman
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Re: Sharp front brake

Postby Isettaman » Fri Jan 26, 2018 12:17 pm

Cheers Inge.
A friend has offered me a pair of refurbed calipers so I've initially swopped over the pads and will
give it a road test later today.
Dave
Life's too short to be miserable

Isettaman
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Re: Sharp front brake

Postby Isettaman » Sat Jan 27, 2018 1:35 pm

Success! Had a test drive with alternative pads installed and the brake performance was much better, still stopping but
not with the scary sharpness I was experiencing.
Thanks for your comments.
Dave
Life's too short to be miserable

King Herald
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Re: Sharp front brake

Postby King Herald » Mon Jan 29, 2018 10:30 am

A good strip, clean and inspect of calipers and pads would be my starting point. You should be able to slowly push the pistons in by hand, and they should smoothly push out with a gentle squeeze of the brake lever. Check to see if there is corrosion behind the rubber piston covers.

You may find the new pads are less sharp simply because they are not yet bedded in to the disc wear pattern, so are not as efficient as the old ones.
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SteveD
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Re: Sharp front brake

Postby SteveD » Tue Feb 13, 2018 9:24 am

A good strip, clean and inspect of calipers and pads would be my starting point. You should be able to slowly push the pistons in by hand, and they should smoothly push out with a gentle squeeze of the brake lever. Check to see if there is corrosion behind the rubber piston covers.

You may find the new pads are less sharp simply because they are not yet bedded in to the disc wear pattern, so are not as efficient as the old ones.
The piston wiper ring can also split. It'd be worth replacing them if you split the calipers.
Cheers, Steve.
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