just wondering how many miles you are going to do on this bike to warrant all the work involved? Those sprocket/drums last a long time,
Bought a "520" x-ring chain kit with narrow sprockets,
if you want to change the gearing then engine sprockets are
easy to change.
Ye-ea-ah ... after you've removed the entire primary drive ... Then, having changed the sprocket, you have to rebuild the primary (remind me, how many individual clutch rollers are there?) and, having finished, you have to hope it doesn't leak from one of the myriad gaskets and seals ...
I do use a Scott Oiler, but would like to ditch it:)
I don't mean to hijack your thread, but why?
Because, ime, (expensive) 'O'-/'X'-ring a hell
of a lot longer if they're lubricated. Back in the 1990's, I commuted in all weathers on various old Jap bikes; ime, what did for unlubricated '-ring' chains was the rings hardened from being heated by the chain (feel the friction in it now, it doesn't get any better with use
), then they cracked and broke up, letting the lubricant out and water and grit in.
In 1991, I fitted a Scottoiler with a new 'O'-ring chain-'n'-sprockets; in the following year, the bike covered about 10,000 miles. I still own the bike, those chain-'n'-sprockets are still on it, the rear wheel adjusters are about half-way along their travel.
The huge advantages I found when I used a bike every day were:-
. it was just a matter of adjusting the pump for more/less lubricant depending whether the roads were were wet/dry;
. I could, and did, get home late from work, put the dirty, wet bike in the garage, go on holiday early the next morning for two weeks and, when I returned home, the bike's chain would work normally, rather than being a rusty, seized mess. :bigt
Nowadays, I can leave a Scottoiler-equipped bike literally for months between uses and, when I want to use it again, one thing I know won't need any attention is the chain. I've been gradually fitting all my bikes with Scottoilers, with 'normal' chains (on Fraser Scott's advice) because the additional cost (and on Britbikes, the need to faff around with 520 chains and special sprockets
) of 'ring' chains isn't justified for the number of miles each bike covers.
Luck with your task, but I'd interested to know the problem that needs such a solution.