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Post by klnteg on Apr 9, 2017 8:19:38 GMT -5
Hey guys,
Just bled the brakes after rebuilding caliper and master cylinder. Master is a 5/8. I feel that I have to build pressure in the lever... my question is. Do I have to bleed more? Is the 5/8 master wrong for a single disk set up on a 75 H1?
Thoughts?
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Post by Jim on Apr 9, 2017 8:30:09 GMT -5
It should be a 9/16" for a single caliper. The 5/8" was used for dual disks. If you want a great brake, put an EX caliper on it with a 1/2" EX master cylinder, per the information on the resource site under "caliper conversion".
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Post by klnteg on Apr 9, 2017 8:53:11 GMT -5
Hmmm
Thanks Jim. Would I be wasting my time if I continue bleeding?
Assuming the 5/8 will still work...?
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Post by Jim on Apr 9, 2017 9:21:52 GMT -5
I don't think you'll be happy with a 5/8" master cylinder and a single disk. Once you get it bled, it'll feel very rigid and require a lot of pull. 5/8" MCs are in demand by guys who want a stock dual disk setup, so you should be able to find a home for it pretty easily. If you sell it, you might be able to finance the entire EX system and have money left over.
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Post by klnteg on Apr 9, 2017 9:34:42 GMT -5
Hmmm
I do have a spare rotor.... just need a left caliper...
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Post by Jim on Apr 9, 2017 9:49:33 GMT -5
Yes, you can go that route too, for a stock look. Calipers can be converted to work on the opposite side. It'll be quite a bit heavier than a single EX, and not feel as good, but it's a lot better than a single disk with a 5/8" master.
I've been running a dual stock disk setup on my H2 for decades, and I'm just about to convert to a single disk and EX caliper/master setup. With HH pads, it gives a 2-finger brake.
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Post by klnteg on Apr 9, 2017 10:07:30 GMT -5
Great info jim! Thank you...
I have an ex caliber also... choices... hmmmm. Will the ex caliber work with 5/8 master?
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Post by JA-Moo on Apr 9, 2017 10:58:49 GMT -5
No, 12 mm for a EX. Mater size is actually super critical.
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Post by klnteg on Apr 9, 2017 11:12:21 GMT -5
Figured... when doesn't size matter;).
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Post by Jim on Apr 9, 2017 11:12:56 GMT -5
I *think* a stock EX master cylinder for the single disk models is either 12.7mm (1/2") or 13mm, but I haven't measured one. You got one around to check, John?
I'm going to use a 12.7mm master with a built in brake light switch that I got from eBay for $22. I have one just like it on my DT100 and it's been excellent for several years now. It was listed for a Honda XR250R.
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Post by shiloh on Apr 9, 2017 11:53:25 GMT -5
I have a spare oem single master if you need one, exclusive ktc pricing  |
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Post by JA-Moo on Apr 15, 2017 13:09:48 GMT -5
I use the stock EX master.
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