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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through February 15, 2008 » Front end vibration « Previous Next »

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Blazin_buell
Posted on Wednesday, January 30, 2008 - 08:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Does anyone else have a slight wobble in the bars. It's much more noticeable when you get up to hwy speeds, then take your hands off and watch the bars. It doesn't go into a tank slapper or anything major but it is annoying as hell. Vibration is expected but extra from the bars wiggling was unexpected. You don't notice it on the track or on the back roads in the curves and I've taken it to a dealer. They said the front wheel is still balanced and they test rode one of their floor models and said theirs did it too. They were at a loss on what to do. Am I nitpicking or has anybody noticed this? Is it just a part of the geometry dynamics?
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Nickcaro
Posted on Wednesday, January 30, 2008 - 09:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

either way, I'm looking forward to someone offering a steering damper
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Spectrum
Posted on Thursday, January 31, 2008 - 12:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My front wheel was a little on the unstable side till I got the suspension dialed in. Now it's all good. But then again it was set from the factory for a much heaver rider. The dealership did not set it up for me (sigh), so I had to do it when I got home.
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F1johny
Posted on Thursday, January 31, 2008 - 12:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not to second guess, but when I rode my 1998 Buell (I know I know) Thunderbolt for the first few times I noticed the same thing. I stoppd trying to turn it in and relaxed and let it do it's thing and the sucker got rock solid. I realize a lot is different and I have not even touched an 1125. I was just shocked how well it responded to input... I rode an 1986 FZ 600 before with 40k and 3 yrs racing. Remember folks this was proclaimed the best handling bike 20 yrs ago. When I got the Buell it was like oh my golly this is what they mean by handling....
2 pennies worth guys that is all my opinion is worth.
OH i have not posted for two years it seems but I look every day.
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F1johny
Posted on Thursday, January 31, 2008 - 12:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey Blazin, just saw your profile, I was thinking you were new to the fold so sorry, your S1 was probably like my TBolt. but maybe not. Anyway lookin forward to your solution.
food for thoght though.
F1
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Fresnobuell
Posted on Thursday, January 31, 2008 - 04:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am still breaking the bike in and up to high 90's it is dialed in perfect. I understand that the factory sets the suspension for an 180 pound rider (which is me). I noticed on the first ride that the 1125r is much more responsive than my CityX. I likey.
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Spectrum
Posted on Thursday, January 31, 2008 - 08:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I understand that the factory sets the suspension for an 180 pound rider

When I took delivery, my bike was setup for a 210-230 pound rider. Now it did have 16 miles on it, so perhaps somebody reset the suspension for a demo ride.
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Doerman
Posted on Thursday, January 31, 2008 - 10:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Mine is perfect. Blazin', I'd look at the suspension setting as the first culprit if I were you. Check the manual and then the settings. If that's not it then let the dealer address it.
Cheers, Asbjorn
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Bobup
Posted on Thursday, January 31, 2008 - 10:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Fresno
"I noticed on the first ride that the 1125r is much more responsive than my CityX. I likey."

that is interesting....I find just the opposite

I feel that my XB9SX is quite "nimble" or quick, with turns, but my 1125R is a very smooth transfer from straight to turns, no suddeness.

on the other hand, when in the turns, my XB9SX is a bit like a gate hinge, but my 1125R is ROCK SOLID !!!
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Spectrum
Posted on Thursday, January 31, 2008 - 11:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bobup - My 03 XB9S was no where near as responsive as the 1125R. Hands down the 1125R handles better in every way.
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Bobup
Posted on Thursday, January 31, 2008 - 11:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Spectrum
You have missed my point.
I agree the 1125R handles better than the XB9SX.
But, with the shorter wheelbase, the XB9SX is extremely sensitive when entering and during turning. The 1125R having a longer wheelbase is alot more rigid and less sensitive (nimble to me)
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Spectrum
Posted on Thursday, January 31, 2008 - 03:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bobup - I understand what your saying. Just isn't true for my experience on my 9S. The 1125R dives or turns in much easier for me.

Of course I had an 03 9S. The newer models have a new swingarm and beefer front forks. It's quite possible this has improved handling over the older models.
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Bobup
Posted on Thursday, January 31, 2008 - 04:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Back in the mid 70's (I know, I'm old) I had 2 Yamahas, a '75 RD250B (front disc) and a '76 RD400, I was club racing (Sears Point Raceway)in the AFM at that time on both bikes. Also had a Yamaha '81 Seca 550, again raced it too.

I loved the quickness of the 250's handling, I hated the slowness of the 400's handling.

If I had races back to back, 250 and then the 400, the 400 would try to kill me on the first turn by trying to go straight.

I also prefered the 250 with pipes on it to run in the "open" superstreet class....I would always be grided in the back due to the displacement, but by race end I would have passed half of all that were out in front....those big bikes just couldn't make the turns very fast...that was the most fun, "David vs Goliaths"!

I have not put nearly enough miles on the 1125R yet to really feel at home on it, but I do notice the difference on my canyon (10 miles worth) ride home each day from work.
I find that I am not pushing it as hard as the XB yet, but my pace on the 1125R is pretty damn close to the XB pace. Can't wait for the weather conditions to be better.

C'ya
bob

(Message edited by bobup on January 31, 2008)
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Sheridan_bueller
Posted on Thursday, January 31, 2008 - 11:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When I started riding my levin25er it did have a little wobble. When I finally adjusted the suspension it hasn't bobbled one bit. The factory setting on mine wasn't dialed in for anything. All adjustments were out of whack, damping high on one side and low on the other, compression the same way on the front. The back was no where close to any rated setting except for the preload, it was on 2.

It is now absolutely perfect. Loving it!!!

JJ
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Bearly
Posted on Friday, February 01, 2008 - 12:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Now I don't trust completely just yet but I'm always taking my hands off of my bars (bad habit?) when I'm coasting up to a stop. Mine doesn't have any real wobble issues. If I really watch I might see a small transitory twitch just for a second or two but that's it.
I have put some new wheels on my bike and balanced them myself. Buell typically does a fine job on their balance jobs. But some may want to double check it themselves.
I have serial 142.

(Message edited by bearly on February 01, 2008)
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Hattori_hanzo
Posted on Friday, February 01, 2008 - 12:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Doesn't this solve any vibration or wobble one might feel from the front end?





I think it was intended by the Buell engineers to be ridden this way....I mean, why else would it be so easy to do?
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Dalton_gang
Posted on Friday, February 01, 2008 - 01:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I agree with Hattori.
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Blazin_buell
Posted on Saturday, February 02, 2008 - 12:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the comments fellas.

When I took delivery I ask the tech to set it up for a 210-230lb. rider as that was the best set up I rode at the track. On my way home I felt every crack and blade of grass I rode over. I rechecked everything and he cranked it all up to 'leven . So I set everything up to the 210-230 range ,much better. I really don't want to soften the front up ,which may or may not help, because under braking it already dives more than I'm used to on my S-1,and she's still got weepy seals. I'll check this weekend a maybe stiffen the front a little bit more and see if it gets worse or better.
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