Mainly when springing out at the back, there is a kind of Wip-quish noise. Mostly when you drive slowly over traffic-settled zones, that is, these exaggerated hills. When driving up to the hills with the front axle, nothing can be heard until you ride down the rear wheels and spring out the rear. Unfortunately, I can't explain it any better. With fast driving even over poor road conditions it is really quite rare. Or let's say a little more when driving under 50 km/h. Increased or extremely bad it is said in good weather : heat , in rainy weather it is less or is not overhuapt .
The spring of the brake distributor has already brought greased nothing. Shock absorber and braking system is completely new so approx. 2 years old.
My workshop said it could be the jacks from the three-corner handlebars, our fat guy has three-corner handlebars at the back, or rather trapezoidal handlebars. I've thought about the pendulums before.
About help I would be very grateful, makes me really crazy. Especially if it's the three-corner handlebars what do they cost or is it enough to change the bushings? Someone's had experiences.
Thank you in advance
