Main Motorcycle: 1977 T140V(J)
Join Date: Aug 2013
Location: Midlands, England
Front disc runout?
I have just fitted a pair of DP Brakes sintered pads to my T140. I had a "spare" 250mm dia disc which I got from an autojumble some time ago, so I took off the original chrome 10" disc, almost no chrome left on now, and fitted the new 250mm disc.
Went out on bike with the view of bedding the new pads in. Did not take many gentle applications from 30mph to feel the extra bite coming in from the new pads.
So, tried some gentle stops from around 60mph. As I applied the brake, this started a very noticeable handlebar shake that got less as the speed dropped. This happened every time I applied the brake. Tried some low speed stops to rest with gentle braking and can definitely feel the brake lever pulsing.
So, I am sure that the higher speed shake and also the low speed pulsing is caused by the "new" disc having excessive run out.
Does this fit in with the experience of others on here?
I can always re-fit the original 10" disc and if the problem goes away, would confirm the disc is the issue.
As an aside, I had Ferodo Platinum pads before. The DP sintered pads in the 30 miles I did today, appear to have much better bite and stopping than the Ferodos.
All the best,