Post by endru on Mar 31, 2014 20:32:47 GMT -5
Back when I put my new final gear set in, I had to pound on the final gear set to get it into the bearing. It rotated fine after that, but when it all got put together, there was some play between the clutch and the rear wheel, and it would make a clinking sound when I turned the clutch back and forth. Not the best situation, but I didn't have much choice I guess.
I've been riding quite a bit since then, probably put about 300 miles on the new gears and there wasn't any problem except for that clinking sound when transitioning between throttling and letting of the throttle. Just the other day though I started to get a noise, like a metallic buzzing sound that came from the gearbox. It increased with speed, so I was pretty certain the bearing was going out. The rear wheel still rotated freely until today, now it seems to be resisting when I turn it by hand and there's some extra "noises" coming from down there.
I'm pretty sure I'm going to need at least one new bearing. Before I open it up and inspect the damages, I'd like to have the new bearings in hand so I can hopefully install them and slap it all back together. Does anyone know which bearings are in the rear gearbox, and where a good place to get them is?
Would one of these by chance be correct?
www.scooterdomain.com/fig-12-part-no-15-139qmb-bearings-6201-p6-for-gear-case-cover-set-of-2-by-no-qmb120015.html
www.scooterdomain.com/fig-12-part-no-20-139qmb-bearing-6203-p6-by-no-qmb120020.html
I've been riding quite a bit since then, probably put about 300 miles on the new gears and there wasn't any problem except for that clinking sound when transitioning between throttling and letting of the throttle. Just the other day though I started to get a noise, like a metallic buzzing sound that came from the gearbox. It increased with speed, so I was pretty certain the bearing was going out. The rear wheel still rotated freely until today, now it seems to be resisting when I turn it by hand and there's some extra "noises" coming from down there.
I'm pretty sure I'm going to need at least one new bearing. Before I open it up and inspect the damages, I'd like to have the new bearings in hand so I can hopefully install them and slap it all back together. Does anyone know which bearings are in the rear gearbox, and where a good place to get them is?
Would one of these by chance be correct?
www.scooterdomain.com/fig-12-part-no-15-139qmb-bearings-6201-p6-for-gear-case-cover-set-of-2-by-no-qmb120015.html
www.scooterdomain.com/fig-12-part-no-20-139qmb-bearing-6203-p6-by-no-qmb120020.html
% from what I've heard. Mine were 14/53 though. Not sure why. I remember when I installed my new 16/50 gear set, the small 16 tooth gear had a really hard time fitting into its bearing - the one that got destroyed. Both ends of that small gear were really tight actually. So maybe that extra pressure on the inner ring caused it to fail? Also strange: The stock bearings are labeled 6201/P6. Sources I've looked at call for 6201 (no P6). What does the P6 even mean?? Would that translate to a slight diameter difference of the inner bearing ring? The ends of new gears may also not have been sized to spec. I have no idea. 
