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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Chassis » Wheels » Archive through October 03, 2005 » PM Calipers « Previous Next »

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Kdkerr2
Posted on Wednesday, May 04, 2005 - 02:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was wondering about the PM calipers on certain Buells. What years did they have the PM calipers on Buells. Are they any good? Do they hold up? And Why did Buell go to a Nissan 6 pot calipers?
I am sure one you fonts of knowledge will know the answer to these questions.
KK
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Buelliedan
Posted on Wednesday, May 04, 2005 - 02:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

They were on the early Buells thru 1997. In 98 they switched to Nissins. The PMs are beautiful calipers, the ones on my RS are works of Art!! They have always worked wonderfully on my bikes equipped with them. I am not sure why Buells switched to Nissins but I sure cost and parts availabilty had much to do with the decision.
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S2pengy
Posted on Wednesday, May 04, 2005 - 08:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I second that.....
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Henrik
Posted on Thursday, May 05, 2005 - 08:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The PMs while beautiful have a bit of flex or some such in them. The Nissin calipers are supposed to be more rigid and capable of more actual braking power.

Henrik
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Jsunstar
Posted on Sunday, May 15, 2005 - 04:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

hey fellas, anyone know if you can you put the updated rotor on a s2 with the the PM caliper? (PM WHEELS) if so, what pads should be used for PM calipers with the updated rotor? (2000 up rotor).
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S2pengy
Posted on Sunday, May 15, 2005 - 08:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Other than different fasteners for mounting the disc no problem.... Stock pads will work but will not have the same bite as with a carbon steel disc.... American Sport Bike can recommend others for better bite...
Always check the clearance between the disc and caliper, sometimes a thin washer maybe needed to shim the caliper out... Mount the disc and caliper and spin the wheel to check
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Rick_a
Posted on Friday, June 03, 2005 - 01:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The PM caliper is very different from the Nissin. For a single disk application I far prefer the PM caliper. With a braided front brake line it works great and the pads last longer than the Nissin. The PM has much larger pistons, larger, thicker pads and a whole lot more swept area. You also need a 5/8" master cylinder.

Consider this...there's a lot of import sportbikes out there with TWO Nissin 6-pot calipers out front. They are identical to the Buell aside from having different hole spacing.
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Sjh
Posted on Saturday, June 04, 2005 - 12:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Are the PM calipers those with the pegasus on them on the earlier buells? I have always wondered if they were a different caliper, or if buell just changed their logo.
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Kdkerr2
Posted on Sunday, June 05, 2005 - 12:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The PM caliper did indeed have the Buell Pegasus logo cast on them. They are a totally different caliper from the 98+ Nissan caliper and use different brake pads although the mounting bolt holes are the same. I recently acquired a PM unit thru eBAy.
KK
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Seth
Posted on Sunday, June 12, 2005 - 04:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I recently bought a PM caliper on E-Bay myself (I do love that horsey )
My problem is that I have no idea where to get a new complete rebuild kit.
I know where to get the rubber bits but it seems that no one has new pistons.
Can anyone point me in the right direction?

thanks!
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Kdkerr2
Posted on Sunday, June 12, 2005 - 08:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Seth:
Performance Machine has a website: www.performancemachine.com/index_Launch.html
And here is the email address for tech questions: tech@performancemachine.com
I believe the Buell PM caliper uses the same components as all their 6 piston differential bore calipers but don't quote me on this. I'm not certain this is correct. Email the tech guy and find out.
KK

(Message edited by kdkerr2 on June 12, 2005)
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Seth
Posted on Monday, June 13, 2005 - 12:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yo KK,
Thanks man!
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