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Adjusting the primary chain on Bw200es 1986
(Fact) The two swing arm bushing are eccentric which can be adjusted by a special tool and locked by a 6 mm phillips head screw. But of what I can see there are only two position to lock the bushings, and from position 1 to 2 there is not a hole lot of travel.
(Question#1) What if your chain is in between the positions then you have to go back to position 1, if position 2 is not enough for your slack is there enough travel to remove at least a half link?
Of what i can figure out is that the chain is doomed to run loose no matter what you do! I know a chain needs a certain slack to operate with out stretching itself, but not sure if this system is enough to fill the gap. If only the bushings were bigger and had more than two locking positions, it would offer better travel and more than two locking options.
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yeah yr right , there's nowhere near enough adjustment between position 1 & 2 ( or all forward / all backward ) I'll look for an industrial link like you described in the mean time , but , try my other suggestion which is to elevate the top side of the nylon chain guide by propping it up with some 6mm nuts underneath the guide.I just did a seriously hardcore enduro last weekend on my big wheel ( yes i had the oldest but coolest bike out of 800 entrants )that was 50 km's long through the tightest up/down/rocky/sandy/dry/dusty/steep/deadly terrain in OZ & the chain & guides & bushes & swingarm components all pulled through without ANY movement or wear at all ....... hard to believe.
To answer yr other question... even with my chain at It's minimum adjustment , It's still too loose !!!! that's why I propped it up with the nuts.
Maximum adjustment with all new components is miles away from being close to tight enough.
ps: my special tool to adjust the eccentric bushes is just a huge open ended spanner that i opened up with the angle grinder.
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