If you going for the larger rear (which as already mentioned is the way forward with a 748...not a 13 front!)...then you may well need a longer chain anyhow. The larger rear sprocket will have an effect of shortening you wheel base and increasing the ride height, if you keep the chain the same length, as chain adjustment and these two factors are directly linked due to the hub arrangement.
If you are having trouble removing the chain when fully slackened off, then it may be too short...if so it will definately need changing/more links adding if you increase the rear sprocket.
My advice...fit a replacement rear sprocket, say a 40 or 42 (either carrier+sprocket, or just just plain jobbie depending on finances). If you cannot then adjust the chain to the correct tension, with the hub almost as far back as it will go...then the chain is too short, and you may want to look into getting a new one to the correct length. Mike Davies and Nelly both do Tsubaki chains a v.good prices.
Once you have this sorted its just a case of adjusting the ride height to suit.
[Edited on 17-5-2004 by Harv748]
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