Topic: 76 cb750f, bounce at 45ish mph

[1976cb750f836]

I've had different tires on ,I've ballence the wheel with the disc and sprocket  installed,I've added dyna beads to the tires.
I still getting  some bounce out of the rear.
It's driving me crazy.
What to Do?
I have 78 wheels on my 76.
Any Ideas?
Thanks

[Jerry Rxman Griffin aka MuthaF'er]

Wheel bearings, steering head bearings, swing arm bushings are all suspect as are spokes etc. Oh, make sure the tire is seated properly and it's perfectly round on the rim.

[1976cb750f836]

Mag  wheeles,no spokes, new head bearings,new wheel bearings,all in the last 2000 miles, swing arm bushings ordered as we speak,
Any other ideas?
Thanks

[BomberMann650]

What kind of bounce is it?
When does it happen? 

Tire pressure, Shock damping, and hard braking can make a bike bouncey.
The hard braking is especially fun as the bike gets a bit stuttery and shimmies some.

[1976cb750f836]

It's always around 45-50mph.
It's an out of ballence bounce!
When  carrying  a passenger its not as noticeable.
Not much above 50,hardly any below 45.
Soon as I get my xr350 kickstarter shafts and clutch back together I'm changing the swing arm
Bushings and inspecting the bearings and shock bushings.
Anything else to look for while I have it Apart?
Thanks.
And my  76 cb750f has made it through 2 wives and 6 Kids!