113 Vibration

[mvent]

Mike,Experiencing vibration in right footboard and bar grip with FLSTFSEI 113" with 10.5 comp.,bike has been dyno tuned,crank runout has checked out fine,when timken conversion and case boring was done.It also vibrated as a 103.Is this typical?Any suggestions as to what to check?
Thanks
Mike V

[mvent]

BTW,sorry but forgot to add this is around 3k RPM regardless of gear or road speed,hope this is in the right section.
Mike V.

[Mike]

Any section is a good section. Vibrations can be extremely difficult to identify. 1st on list is to check all motor, exhaust, footpeg and all other mounts. We've seen accessory backrests, footpeg extensions, wide handlebars, long exhaust, etc. cause vibrations. 2nd on the list is more problematic; the counterbalance sprocket on the crank shaft may have shifted (rotated) causing the balancers to be out of phase. This is a problem because it requires the removal of the crankshaft to inspect. Other possibilities could be the counterbalance bearings and chain/sprocket alignment, but as a new bike I would not suspect these.

[mvent]

Thanks for the suggestions,going to check torque on all mounts and check clearances.Putting in new primary chain because of a tight spot,maybe that will help,will update when weather improves enough to ride.
Thanks
Mike V

[mvent]

Mike,in reading different post here,smoothing calibration has been mentioned,the base map being used is 1690 super high output with 2-1 pipe,for up 2005 ecm's,dos this calibration include smoothing process?Just a thought that it could be a cause of vibration since everything has checked out good to this point.
Thanks
Mike V.

[Mike]

The smoothing was intended for 6 speed models due to the lower operating rpms. I do not believe this feature was applied to maps for 5 speed models. The same theory could apply to any model, though. If you have a copy of your ignition table (SERT users), the smoothing can be identified by extremely low (retarded timing at very low rpms/high throttle openings, negative numbers in some maps). If your vibrations are occuring at predominately 1.5-2.5k rpms, then this would help reduce them. In upper rpms, too much timing would exhibit detonation. Reducing timing here could reduce vibrations because you are also reducing hp/tq the motor is producing (softening or detuning).

[Bill]

Check and see if your primary shaft is bent. It is not very hard to bend them. My 1999 bike had a bent shaft,and my 2001 bike had a bent shaft. Jack back tire tire off the ground,take primary cover off and,put transmission in neutral, turn shaft by hand. If chain moves up and down on top,then you have a bent shaft.

[mvent]

Thanks for suggestion Bill,I did just install a new primary chain because of a tight spot,but have not ridden yet due to weather,however if it doesn't change I will definately check it out.
Mike V.