Triumph Rat Motorcycle Forums banner

41 - 42 of 42 Posts

·
Registered
Joined
·
760 Posts
That is weird, I never would have thought that bars or mirrors would affect handling that much. Makes me think some motorcycles are not manufactured properly and are at the edge of stability. For what its worth, I have been chasing a slight wobble on my Thruxton ever since new. All the changes (tires, steering damper, shocks, fork springs & oil, steering head tapered bearings) I have made do help but when I get on a windy highway @ about 130 KMH the wobble sometimes returns. Maybe I need to change the bars?:unsure:
First, consider that wind has real HIT. Odd things happen to two wheel vehicles in wind.

Second, one thing that is sorely overlooked and has been for a while is wheel alignment front to rear. Not chain alignment, WHEEL alignment. I've too many bikes where the front and rear wheels are not aligned.

Having the chain straight between countershaft and rear sprocket does not mean that the front wheel is aligned to the rear. The result of that misalignment is often blamed on tires, steering head bearings, and other stuff.

Really want to induce a wobble... install a luggage rack with a top box and hold on for dear life at speed.
 

·
Registered
Joined
·
1,019 Posts
Amongst other things I put some Norman Hyde bars on my modified Bonnie. It lightly started shaking it's head at 70 mph if you let go of the bars. The bike still had it's standard Bonnie mirrors, and they were acting as sails on the end of the bars. I took them off and the problem went. I did put them back on, because how often do you drive not holding the bars against needing mirrors?. It was just nice to get to the bottom of the problem

Rob
 
41 - 42 of 42 Posts
Top