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Message started by klx650sm2002 on 10/17/04 at 08:53:34

Title: Master cylinder, size ?
Post by klx650sm2002 on 10/17/04 at 08:53:34

Does anyone know the bore size of the front master size, don't have my manual yet.
Thanks in advance.

Clive W :D

Title: Re: Master cylinder, size ?
Post by Greg_650 on 10/18/04 at 02:30:00

I really don't know. What you gonna do?

Title: Re: Master cylinder, size ?
Post by klx650sm2002 on 10/18/04 at 06:43:53

Probably get one off a scooter.

Clive W :D

Title: Re: Master cylinder, size ?
Post by Kropatchek on 10/19/04 at 08:44:25

Did the measurement for you on my spare unit.
Its 12.7 mm or for you non-metric guys and dolls: ;D
half an inch ( 1/2 ")
Glad to be of service

Greetz
Kropatchek

Title: Re: Master cylinder, size ?
Post by klx650sm2002 on 10/19/04 at 09:34:55

Thanks Kropatchek,
My standard m/cyl is 1/2" and I am looking to try a 10mm but might end up with an 11mm.

Clive W :D

Title: Re: Master cylinder, size ?
Post by Greg_650 on 10/20/04 at 02:59:52

klx650sm2002 wrote:

Thanks Kropatchek,
My standard m/cyl is 1/2" and I am looking to try a 10mm but might end up with an 11mm.

Clive W :D

Why ???

Title: Re: Master cylinder, size ?
Post by klx650sm2002 on 10/20/04 at 03:17:44

If you go from a 1/2" to 11mm m/cyl you get a 33% increase in line presure for the same force on the lever, the drawback is more lever travel.

Clive W :D

Title: Re: Master cylinder, size ?
Post by klx650sm2002 on 10/25/04 at 06:46:52

If you go from 1/2" to 10mm you get 61.29% more line pressure for the same lever pressure.

Clive W :D

Title: Re: Master cylinder, size ?
Post by Greg_650 on 10/25/04 at 06:54:37

What are you wanting to achieve? More piston pressure to clamp the caliper harder or a more gradual feel for the braking.

Title: Re: Master cylinder, size ?
Post by klx650sm2002 on 10/25/04 at 07:00:03

More clamping pressure for the same lever pressure.

Clive W :D

Title: Re: Master cylinder, size ?
Post by Greg_650 on 10/25/04 at 07:06:22

But as you said, the lever travel will be greater....with the same brake caliper. What if the volume of the KLX caliper is too large for the travel?

Title: Re: Master cylinder, size ?
Post by klx650sm2002 on 10/25/04 at 07:44:33

With the lever travel increaceing I might find the need to go to 11mm.

Clive W :D