Transalp front sprocket

[eoptio]

Hi all

first post on the forum. I have a 1992 Transalp with approx 40k miles on it. Was on a trip abroad last week when there was a unusual sound coming from the front sprocket, turned out the sprocket retainer plate lost all it's teeth and the sprocket was moving outwards against the sprocket cover. Eventually got a new retainer plate and (JT) front sprocket, put this on and got back home. Just having a good look at it now, the front sprocket appears to be very wobbly, splines on shaft are worn but a new driveshaft would not be an economical repair on this bike, and think I can (at least temporarily) fix it by putting some washers on the retaining plate to take away the worse of the wobble. Main query is what way round the sprocket should go? The old one (non OEM) was put on with the 'shoulder' (thicker side) facing outwards. If I put the JT one on like that (letters facing outwards) the chain touches the engine casing when the sprocket is right up against the end of the shaft, so I think it should go on the other way round? Any advise welcome

Thanks

K

[AIRWOLF]

Hello and welcome.

The shoulder should be facing you.

However if you are pushing the sprocket further onto the shaft with spacers/washers you may need to put the sprocket on wrong way round, . . . the main thing is the position of the teeth to align with the rear sprocket.

ps
the sprocket will probably happily wobble along for many more miles.
there are many threads on this subject, with loctite, liquid metal etc etc being used to slow down the wear.

[eoptio]

thanks for quick reply. I guess there must be some lateral movement possible ie the sprocket should not be 'wedged' on the driveshaft? Perhaps just put it on with some washers to remove the worst of the wobble? The new retainer plate showed signs of wear already after trip back home (approx 500 miles)

K

[eoptio]

Hi

after trying various things the best fit with the least wobble appears to be by turning the sprocket around then fit the the backplate with some washers. This pushes the sprocket as far to the end of the shaft as possible without the chain touching engine casing. The 'shoulder' of the sprocket catches the splines at the end of the shaft where they are least worn. Not much lateral movement left but also not much wobble. Any reason not to do this?

K