Weird vibration riding 2 up on the interstate....

[NoJive]

I'm not sure if this is normal or not, so thought I'd run it by the forum. Awhile back, my wife and I took a ride on the interstate from Beckley, WV to Charleston, WV. The route has a lot of turns, and hills. I noticed that it 5th gear, when the RPM's were around 5,000rpm and I accelerated, I would feel a rather strong vibration in the bike until say 5,500-6,000rpm. This only happened when going uphill, and does not seem to happen when I am riding solo. I'm wondering if it's because of the additional strain on the bike (2 up, and uphill??)?

 

[bruiser]

Yep. You probably need to down shift to keep the speed and revs up, especially on a hill.

 

[NoJive]

Yep. You probably need to down shift to keep the speed and revs up, especially on a hill.

Great to know! I was worried something was up with the engine.

 

[NancysToy]

Harmonic vibrations are almost always worse under load.

 

[Bob Denman]

This might also be pointing to a need to check belt tension (and alignment)

 

[Schnauzer]

Check the angle of the dangle. When your ryding 2up, the position of the swingarm is different, whiick in turn means the rear of the "Atuo/Bike" has dropped. Increasing the tension and the strain as Nancy'stoy has suggested. possibly stiffening up the suspension will elimainate some of this..

 

[mrb]

This might also be pointing to a need to check belt tension (and alignment)

And fitting one of Jims belt tensioners (www.smoothspyder.com) has been claimed by many to solve this vibration.

 

[NoJive]

And fitting one of Jims belt tensioners (www.smoothspyder.com) has been claimed by many to solve this vibration.

Might have to look into getting that, thanks for the link.