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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through April 14, 2011 » '08 vs. '09 suspension set up « Previous Next »

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Whistler
Posted on Thursday, March 31, 2011 - 07:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Carrying a little less weight on my '09 CR so a suspension adjustment is in order. Looking at the book settings I noticed the '08 and '09 settings are quite a bit different. Why is that?
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Zac4mac
Posted on Thursday, March 31, 2011 - 08:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Early 08s had stiffer fork springs.
IIRC they went to softer ones for late 08s or 09s, not sure which.

Z
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Nuts4mc
Posted on Thursday, March 31, 2011 - 09:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

from a post I found during a search...

With a 142 lbs rider the 1125 will be a little over sprung on both ends. 35-38mm front sag with 28-35 rear works best for most riders so he needs a little more front sag to get neutral mid corner steering.... See More

If his bike was an early 1125R with the “rev A” forks it will be even more stiff due to the 1.0 kg/mm vs. the .95 kg/mm springs that came in the rev B forks (J0121.1AMB & J0122.1AMB). If you look through the front wheel, you can see part number sticker on the fork lowers to verify rev A or rev B.

Both the rev A & rev B forks work best for light riders with an oil level of about 120-125mm (stock should be 117mm). Ideally if he rides mostly on the street he would be better off with a .85 kg/mm springs. An alternative would be to cut about 5mm off the spring preload spacer and stay with the .95 spring and reduce the oil level to about 125mm. He could then get the proper sag and handling although the ride would be a little firm.

Hope that helps,
Erik
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Dannybuell
Posted on Thursday, March 31, 2011 - 10:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nuts4mc - had to look at your profile after reading your post, M.E..
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Nuts4mc
Posted on Thursday, March 31, 2011 - 11:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Lt.Dan, the search was for fork oil type and volume - need to get my 1125r ready for the back roads of SunDiego....with the state being broke - our roads are looking more like the ones I grew up with in Cleveland, pot holes/cracks and general pucker moments at speed....
(we eng types love that revision speak - shows there was order in the Buell universe...but I'm so old I had to register for the draft, use a slide rule in college and when I did get a calculator it used RPN)....now I just administer the young ones and advise when they have a OH $hit! moment....always admired Eric and his efforts.
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Smit3833
Posted on Thursday, March 31, 2011 - 12:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So I guess I'm not the only M.E. in San Diego with an 1125R...
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Nuts4mc
Posted on Thursday, March 31, 2011 - 01:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

great minds think alike! (...on locations and type of rides!) be safe - the roads and traffic seem to get worse all the time...
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Catalan42
Posted on Tuesday, April 12, 2011 - 02:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nuts4mc and Smit3833: Are you both in the SoCal Buell Riders and/or SCAB on Meetup.com?

I'm an EE inSane Diego with an 1125R also.....

Alan


Palomar Mtn Sunday 4/10/2011
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