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Posted by edwar355
- February 09, 2010, 14:30:32 PMgot another reply (this one makes more since to me)
Since it is a specific RPM range, this indicates a harmonic imbalance in your engine...not the drive train. Also when you engage the clutch, you remove the load...and I am sure decrease the rpms as well so the vibration goes away. It is most likely to be an imbalance in the flywheel area, rather than an internal part that is warped or out of balance..Have you made any modifications to the bike, has it been this way since you got it or is it a condition that has just revealed itself? If it is new, something has slipped, ever so slightly as to cause this only in a specific RPM range... Good Luck! I hope you find this to be very helpful!
Posted by edwar355
- February 09, 2010, 13:21:22 PMI put our problem on fix ya.com and this is what one of the guys said.....
Hi,
You probably won't like this.
It sounds to me like wear in one of the input shaft bearings to the gearbox.
Unfortunately it can be worse than this because if the housing that the bearing sits in allows the bearing to move, then it can become oversize - allowing the whole bearing to rattle within it. It often only happens at specific speeds, and ends up with a mounting hole looking like a 50p in shape.
It may be something else, but vibration usually gets worse over time - indicating wear of a main bearing somewhere.
Posted by edwar355
- February 05, 2010, 22:44:44 PMChief is right........those vance and hines i had actually broke the weld on the pipe at the head and i had a horrible exhaust leak
Posted by chief
- February 05, 2010, 22:34:41 PMAre they aftermarket DRIFTER pipes - using drifter right foot peg?
If so, you have the pipes hard mounted - which causes a ton of vibration. This is a problem in a sorts of ways. You have a rubber mounted engine being held by the pipes.
I suggest you get a classic right foot peg and fabricate a proper hanger. There are instructions in the mods/tips section of the web site. It isn't difficult at all.
This MAY not be your problem, but it is something that needs to get fixed in any event.
Posted by edwar355
- February 05, 2010, 18:14:37 PMMine does the same thing......but I kinda got used to it but now that you have said something its made wonder a bit. Ill tell you what i've done....
I have:
Changed tires (one had a broken belt in it) but still shook after being replaced
I had vance and hines exhaust that were hard mounted (no rubber) on the passenger foot peg....Then i bought a vulcan classic foot peg (rubber built in) and Hard Krome exhaust for a vulcan classic (the one mount is the only difference).......still shakes
So now I hit up google and have seen that it maybe a bad injector (kinda makes since) and also I found this http://www.gadgetjq.com/ujoint.htm which makes since ....so says my dad....he says a U-joint can sometimes have a sweet spot in them to...
Maybe we will get our answer soon............If I can find a U-joint tomorrow i'm going to be replacing mine
Posted by steve
- February 05, 2010, 17:23:08 PMHey Friends,
I need some help. At a specific RPM range, through all 5 gears, my newly purchased 2000, 1500cc drifter vibrates. The vibration is like driving over a washboard and is a big mystery to me. I am new to the drifter and haven't owned a motorcycle for years. I would appreciate any help you can offer.
Someone suggested that it might have something to do with my aftermarket pipes.
How do you check the fuel/air mixture?
Thanks for your help
-Steve