New Front Master Cylinder Needed

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New Front Master Cylinder Needed

Post  Mauser on Mon Aug 27, 2012 7:56 pm

Hi guys,
Need your help, my US imported piggy has no front brake light switch; I fitted a hydraulic pressure switch which has worked OK for last 12 months but now has failed....question is will a master cylinder from another bike fit and if yes which ?, ideally 1 which takes a stock brake switch so I can plug into my stock UK wiring loom.
Of course I am checking ebay for UK spec master cylinders as I type !!!

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Re: New Front Master Cylinder Needed

Post  BuRP on Mon Aug 27, 2012 8:26 pm

No idea....... but I'd get a new pressure switch, they - normally - last a lifetime.
The problem you face is, the diameter of the master cylinder must be same, otherwise you might end up going over the bars (smaller dia) or going straight through those stone walls I've heard about (bigger dia).
Considering this, do mount a helmet cam pleeeaaasse?

KIS bru, get same, cheapest too I think Wink
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Re: New Front Master Cylinder Needed

Post  Mauser on Mon Aug 27, 2012 8:55 pm

BuRP wrote:No idea....... but I'd get a new pressure switch, they - normally - last a lifetime.
The problem you face is, the diameter of the master cylinder must be same, otherwise you might end up going over the bars (smaller dia) or going straight through those stone walls I've heard about (bigger dia).
Considering this, do mount a helmet cam pleeeaaasse?

KIS bru, get same, cheapest too I think Wink

I did think about another switch but reading the forums and other peoples problems it seems these switches fail when you are lightly applying the brakes...99% time for me..the contacts are therefore only slightly touching and soon become dirty due to arcing and then they fail....hence replacement MC needed.
Update just spoken to Paul over at www.650R.co.uk and he will be sorting out a new MC and hose..... Smile.

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Re: New Front Master Cylinder Needed

Post  BuRP on Tue Aug 28, 2012 6:48 pm

Well, if that is the prob.... mount an LED rear brake light! Less current so less arcing of the contact points, and normally more light too?
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Re: New Front Master Cylinder Needed

Post  Mauser on Tue Aug 28, 2012 8:39 pm

BuRP wrote:Well, if that is the prob.... mount an LED rear brake light! Less current so less arcing of the contact points, and normally more light too?
Great idea...apart from I am running a LED rear light lol.....keep up the good work my friend banana

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Re: New Front Master Cylinder Needed

Post  rikco on Tue Aug 28, 2012 11:39 pm

and youre old one cant be fixed?

i fixed one that did not work on my scooter (for electric start and brakelight), it was a verry small part but opened it up and made the feather a bit longer and its working like new till today.

wake up

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Re: New Front Master Cylinder Needed

Post  Mauser on Wed Aug 29, 2012 8:52 am

These are sealed units.....






Don't think it's possible to repair or worth it they are only £15 razz

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Re: New Front Master Cylinder Needed

Post  rikco on Wed Aug 29, 2012 9:48 am

ah ok

never seen one of those because im not into cars BRP smile

well so cheap? buy a new one and handle with care

cheapest sollution is.............hit the rear brake pedal for a light razz
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Re: New Front Master Cylinder Needed

Post  Mauser on Wed Aug 29, 2012 2:30 pm

rikco wrote:ah ok

never seen one of those because im not into cars BRP smile

well so cheap? buy a new one and handle with care

cheapest sollution is.............hit the rear brake pedal for a light razz

All being well should have a UK model master cylinder with the proper brake switch attached Smile....and new hose to go with it Smile.

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Re: New Front Master Cylinder Needed

Post  BuRP on Wed Aug 29, 2012 8:08 pm

Aargh Maus',

you've cut it up already so can't be reused - so, I give up!


Wait.... what about don't have a working braketail? lol!
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Re: New Front Master Cylinder Needed

Post  Mauser on Wed Aug 29, 2012 10:53 pm

BuRP wrote:Aargh Maus',

you've cut it up already so can't be reused - so, I give up!


Wait.... what about don't have a working braketail? lol!


But Burp...you told me to chop it up and find out what was wrong..... Frustrated
Not mine just a set of pictures i found on the wonderweb..... razz

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