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Master cylinder, size ? (Read 27 times)
klx650sm2002
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Master cylinder, size ?
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  Cheesy
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Savage_Greg
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Re: Master cylinder, size ?
Reply #1 - 10/18/04 at 02:30:00
 
I really don't know.  What you gonna do?
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klx650sm2002
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Re: Master cylinder, size ?
Reply #2 - 10/18/04 at 06:43:53
 
Probably get one off a scooter.

Clive W  Cheesy
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Kropatchek
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Re: Master cylinder, size ?
Reply #3 - 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: Grin
      half an inch ( 1/2 ")
Glad to be of service


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Kropatchek
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klx650sm2002
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Re: Master cylinder, size ?
Reply #4 - 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.

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Savage_Greg
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Re: Master cylinder, size ?
Reply #5 - 10/20/04 at 02:59:52
 
klx650sm2002 wrote on 12/31/69 at 16:00:10:
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  Cheesy


Why  ???
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klx650sm2002
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Re: Master cylinder, size ?
Reply #6 - 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  Cheesy
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klx650sm2002
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Re: Master cylinder, size ?
Reply #7 - 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.

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Savage_Greg
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Re: Master cylinder, size ?
Reply #8 - 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.
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klx650sm2002
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Re: Master cylinder, size ?
Reply #9 - 10/25/04 at 07:00:03
 
More clamping pressure for the same lever pressure.

Clive W  Cheesy
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Savage_Greg
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Re: Master cylinder, size ?
Reply #10 - 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?
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klx650sm2002
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Re: Master cylinder, size ?
Reply #11 - 10/25/04 at 07:44:33
 
With the lever travel increaceing I might find the need to go to 11mm.

Clive W  Cheesy
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