Balance shaft and Vibrations on 1290 SAS

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Rockbyter
125cc
125cc
Posts: 33
Joined: Fri Mar 24, 2017 2:40 pm
Country: England
City: Durham
Year: 2017
Model: Adventure

Balance shaft and Vibrations on 1290 SAS

Post by Rockbyter » Tue Jun 27, 2017 1:23 pm

If there are any engine gurus out there please may I ask this question: What effect would it have if the balance shaft had been put in one or two teeth out? Trying to think of a reason for the excessive vibes that start from around 5k-5.5k then get worse right up until red line. Mechanic acknowledged it was bad and the demo bike I tried was at least 50% less. I can live with it but would rather not if there is a solution.

Thanks in advance.

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