I've just done a major service on it as it's coming up for 70,000 miles. Everything was going swimmingly when I decided to runn it in gear on the centre stand to warm the final drive oil and gear box oil prior to changing them.
The rear wheel seemed to spin very lumpy wasn't very noisy but almost seemed to surge, like it was missing but the engine is running sweet as a nut, new plugs, filter, valves regapped, end float done etc. There doesn't seem to be any bearing type play in the rear wheel, hands at 12 and 6 then 3 and 9. No swarf in either oil. When I looked in the final drive by the rear hub through the filler hole there was no obvious damage to the helical flat gear.
Any ideas?
The rear wheel seemed to spin very lumpy wasn't very noisy but almost seemed to surge, like it was missing but the engine is running sweet as a nut, new plugs, filter, valves regapped, end float done etc. There doesn't seem to be any bearing type play in the rear wheel, hands at 12 and 6 then 3 and 9. No swarf in either oil. When I looked in the final drive by the rear hub through the filler hole there was no obvious damage to the helical flat gear.
Any ideas?