Feels like braking when driving over bumps

Hi Everyone - I am experiencing some binding in the rear on my new 74 850. Something it biting in the rear when I go over bumps. The bigger the bump, the more it feels like the rear brake is quickly engaged. At first, I thought the previous owner had the rear cable too tight. I have loosened it a lot, and there is a lot of play in the rear brake. The problem still persists. The wheel spins freely on Center stand, and there is plenty of play in the pedal when engaged. Any ideas?

Cheers,
Gatsby

gatsby said:

I am experiencing some binding in the rear on my new 74 850. Something it biting in the rear when I go over bumps. The bigger the bump, the more it feels like the rear brake is quickly engaged.

Click to expand...

The brake cable doesn't happen to be routed (incorrectly) under the Z-plate?

Or your shocks have too much travel and the tyre is rubbing on the mudguard.

L.A.B. said:

The brake cable doesn't happen to be routed (incorrectly) under the Z-plate?

'74 Commando rear brakes feel unsafe.

I am working a the bugs out of the Commando and while riding today, I noticed the rear brake actually applies when traveling over short rises in the road surface. It's a bit alarming and does not feel safe. Also, when slightly riding the brake, the pedal pushes back as the road surface...

www.accessnorton.com

Click to expand...

I’m and idiot. I can’t believe I did not notice that. Thank you L.A.B.

Kommando - thank you for your response as well.

Cheers,
Gatsby

gatsby said:

I’m and idiot. I can’t believe I did not notice that. Thank you L.A.B.

Click to expand...

It's a fairly common mistake that's often seen in pictures of Commandos so I'd strongly recommend all pre-Mk3 owners check the rear brake cable is routed over and not under the Z-plate.