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Buell Forum » Old School Buell » Archive through October 28, 2010 » Another newbie question: X1 high rpm vibes? « Previous Next »

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Ibbypop
Posted on Tuesday, October 12, 2010 - 10:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I've all but resurrected my '99 X1 purchased earlier last summer - thanks to many of you (saved me about 2 grand in repairs I've been able to pull off in my own garage). Now that she and I have gotten to know one another, I'm itching to push her a little harder. Problem is, at above about 4.5K RPM she wants to shake me out of the seat. This may be exaggerated, but its enough to make me get out of the throttle. I've been up to the redline a handful of times, but dont want to shake the bike apart. Is this "high" RPM vibe normal? I've replaced the rear iso's and inspected the front - which seem to be in good shape. I've also done a thorough bolt check -all seems well. She feels beautiful at cruising speed - I just feel like I should be the only uncomfortable one at hard acceleration when RPM's exceed 5-6K, not the bike. I only have other v-twin cruisers to compare the ride too. Do I keep pushing her or do I need to pursue the bad vibes?
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Tom_b
Posted on Tuesday, October 12, 2010 - 11:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

No that is not normal.. You got a problem you need to check the fron ISO again.
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Foximus
Posted on Wednesday, October 13, 2010 - 01:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I feel like mine is like that... I wont go above 6k... and pulling hard at 5k is ridiculous.
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Kalali
Posted on Wednesday, October 13, 2010 - 10:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Definitely not normal. In fact mine ('00 X1) smooths out once you go above 3K and remains that way pretty much up to 6K. From 6K to redline it does get a bit shaky but I hardly ever go that far up the tach.
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Koz5150
Posted on Wednesday, October 13, 2010 - 12:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My M2 feels better the faster I go. I prefer to cruise at 4,500 rpm.
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Kdstang
Posted on Wednesday, October 13, 2010 - 09:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My 99 X1 softens out at 3000 rpms. Above 3500+ its smooth as glass and if it wasn't for the exhaust, I wouldn't know the bike had an engine.
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Bookyoh
Posted on Wednesday, October 13, 2010 - 10:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I suggest you take a close look at the muffler front mount. Do you have the original mount or the 2001 style Y-mount?

A bad mount will send vibration to the footpegs above 80 MPH.

Mark
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Tom_b
Posted on Thursday, October 14, 2010 - 12:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Muffler mount is a good idea. But something is not right .My x-1 under full throttle pulled hard and relatively smooth (for a v-twin) all the way to redline.
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Cyclonemick
Posted on Thursday, October 14, 2010 - 09:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Things I would look at: Carefully Inspect Front Iso (top, and bottom) Rear Iso's, Front Mount, Tire Pressure and overall condition of tire, Stearing head Bearings, checking front forks for leaks. Good Luck! Like everyone has already said, you do have something going on! Being Rubber mounted, Buells vibrate alot at and near Idle but the faster you go the less the engine vibrates and the smoother the ride!
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Ibbypop
Posted on Thursday, October 14, 2010 - 08:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I do have the old front muffler mount - this may be the culprit as its already shaken my V&H muffler to pieces. I needed an excuse to get new exhaust. I'll be checking over the front iso again, as well. Thanks guys!
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Bookyoh
Posted on Friday, October 15, 2010 - 01:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The old muffler mounts were notorious for breaking down and then transmitting significant vibration.

Mark
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Foximus
Posted on Friday, October 15, 2010 - 03:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have to leave my front exhaust mount loose as other wise it forms cracks in the exhaust.
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