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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Centering brakes?
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Author Topic: Centering brakes?  (Read 1039 times)

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Offline funkyfresh

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Centering brakes?
« on: October 05, 2007, 01:28 PM »
I'm just finishing of my first build, a TA survivor. It’s got copy MX1000 callipers.

They never seem to return to centre setting, the RH side (viewed from front) seems to not really move away from wheel much at all.

From memory side pull brakes have that characteristic, don’t they? Is there anything I’m doing wrong? :crazy2:


.....waits for loads of abuse!! :idiot2:

Lazarou

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Re: Centering brakes?
« Reply #1 on: October 05, 2007, 01:35 PM »
Some have a self centre mechanism on top but if you don't have those the old trick is to tap down on the rear spring.

That sounds like gibberish! sorry!

Lazarou

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Re: Centering brakes?
« Reply #2 on: October 05, 2007, 01:36 PM »
Can anyone explain in English?

Offline OrgasmDonor

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Re: Centering brakes?
« Reply #3 on: October 05, 2007, 02:34 PM »
Some have a self centre mechanism(YOURS DOESN'T) on top but if you don't have those the old trick is to tap  down on the rear spring. (THE SIDE THATS HIGHER, PLACE A SCREW DRIVER ON THAT SIDE ON THE SPRING BIT AND WHACK THE SCREWWY WITH A BIG FOOK OFF HAMMER TO MOVE THE SPRING DOWN LEVEL WITH THE OTHER SIDE AND IT RELEASES WITH THE SAME DISTANCE ON BOTH SIDES.

That sounds like gibberish! sorry!

 :LolLolLolLol:

SaMAlex

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Re: Centering brakes?
« Reply #4 on: October 05, 2007, 02:39 PM »
Here is a quick way:

If its a quick reliese brake, open the quick reliese to open out the arms.
Un hook the springs from behind the arm that is staying on.
Bend the spring up to give more force on that side. Use a small ring spanner or a small metal tube to bend it up (dont go mad)
hook up the spring again.
Do up the QR again.
Check the brake, repeat if you need (it may take a few times)

HOZAT?!

Lazarou

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Re: Centering brakes?
« Reply #5 on: October 05, 2007, 03:18 PM »
Some have a self centre mechanism(YOURS DOESN'T) on top but if you don't have those the old trick is to tap  down on the rear spring. (THE SIDE THATS HIGHER, PLACE A SCREW DRIVER ON THAT SIDE ON THE SPRING BIT AND WHACK THE SCREWWY WITH A BIG FOOK OFF HAMMER TO MOVE THE SPRING DOWN LEVEL WITH THE OTHER SIDE AND IT RELEASES WITH THE SAME DISTANCE ON BOTH SIDES.

That sounds like gibberish! sorry!

 :LolLolLolLol:


 :LolLolLolLol: :LolLolLolLol:

Offline funkyfresh

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Re: Centering brakes?
« Reply #6 on: October 05, 2007, 04:37 PM »
THanks for your help guys, i'm gonna try the bening spring trick tonight......

have a good one..

M :LolLolLolLol:

Offline SteveG

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Re: Centering brakes?
« Reply #7 on: October 05, 2007, 05:47 PM »
Just to add to the spring bending you can twist the center pin a bit with a spanner on the rear fixing nut up as well. Before you do this though check that the pivot nuts aren't too tight as this will stop the caliper opening up when you release the lever. You have to be careful not to loosen it too much though as the caliper arms will be a bit sloppy.

Offline MartyC

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Re: Centering brakes?
« Reply #8 on: October 06, 2007, 12:14 AM »
The best way to centre them is to use a cone spanner (nice and thin) on the main spindle which should have flat sides, pulling the lever while turning the cone spanner in the right direction (depending on which side is out of centre) should get a spot on centre for the brake  :daumenhoch:.


Better to crash and burn than fade away

gt0733

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Re: Centering brakes?
« Reply #9 on: October 06, 2007, 12:27 PM »
Some have a self centre mechanism on top but if you don't have those the old trick is to tap down on the rear spring.

That sounds like gibberish! sorry!


not gibberish................a gentle tap with a pin punch and hammer right on top of the spring ring. or just get shimano tourney's  :daumenhoch:

Offline funkyfresh

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Re: Centering brakes?
« Reply #10 on: October 07, 2007, 04:17 PM »
The bending of the spring trick worked a treat, thanks..

Anyone remember who had the self centring mechanisms for MX brakes for sale a while back? - (for another project)

Offline Rombloke

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Re: Centering brakes?
« Reply #11 on: October 07, 2007, 05:16 PM »
you need the later centre bolt to use those fella, they dont work on regular mx1000/900's

Dave
haro, how do you do

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