Rear end weave during braking or gearing down

[mac.]

Hi All

Just finished putting the final bits and bobs together on the CBX and took it for a short test ride. Although the brakes aren't the best (probably a little air still in the system) they seemed okay.

The only problem that I found during the ride was that when I geared down or braked moderately hard. on the back brake, the back end felt quite "squirrelly". My first thought was that the swing arm bushes were the problem, but they appeared to be in good nick when I put that part of the bike back together a few months back.

Any ideas, tests I can do to determine the root cause?

Tx's

Mac

[tevan]

I had the same issue once. Did you tighten your rear axle bolt to spec??

[EMS]

Also, make sure the rear wheel is aligned properly. Measure the distance of the rear axle center to the swingarm axle center on both sides.

[steve murdoch icoa #5322]

Long shot, but is air pressure good in the rear tire?
Maybe an old tire?

[NobleHops]

How did you tension the steering head bearing? Too tight and it will weave like a drunken sailor. Too loose and it will feel loose and nervous.

[mac.]

Thanks for the feedback, I'll go and get all of those ticked off and keep you posted.

Cheers

Mac

[mac.]

Well ladies and gentlemen we have a winner!

Taking all of the information together and checking each item, I had misinterpreted Tevan's note to read check the swingarm torque.

So after I had done that and it was okay I thought I'd check the rear axle torque too.

Someone didn't tighten that properly. (Can't think who that was?)

So once again thanks to you all.

Took the bike out yesterday and she was very well behaved, apart from the fact that one of the ignition contacts has packed up and I could'n't start the bike. (All part of the fun of owning a 30 odd year old bike.......the journey continues)

Cheers

Mac