My daily rider V30 has developed a strange intermittent behavior that so far I have not been able to diagnose. I'm still working on it, but I thought I'd sound off and see if anyone else has any ideas.
There is a rhythmic thumping sensation, which I feel in my footpegs rather than hear, the appears when I'm accelerating out of a turn. I have also noticed it when accelerating in the straightaway.
The thumping seems to be tied to ground speed, not tachometer.
It usually does not appear when I'm traveling at higher speeds, nor when I'm traveling at a steady pace. Only when accelerating moderately. Heavy acceleration does not produce this thumping.
The tires are fine, no tread separation, no defects. The chain seems fine, is well lubed, and rear sprocket is not bent. Rear wheel alignment is okay.
Rear tire, chain and sprocket are all on my list to replace this winter.
I'd entertain any thoughts or suggestions (except "go buy an FJR"). My guess is a worn or sticking link in the chain, which is not apparent to me with the chain on the bike. My other guess would be an emerging tire problem, also not visible to the naked eye.
I will perhaps know the answer better when the snow falls and I replace the rear tire and chain. Meanwhile, if there are other suggestions it might point me in a direction that leads me to a solution....
