Originally Posted by
ciclirossetto
Light Action was 6 speed, yet pre-6 speed index. This MB2 came stock with a long cage rear der. If you want to keep it as original as possible, this may be found on the typical sale and auction sites. Old Deore pre-index long cage would look nice too Otherwise, a long cage 6/7 speed STX, LX, DX as mentioned above would be fine, Remember, ideally this uses a 7.4 mm width chain for the 18 speed system which will not work well with 8/9 speed rear ders. You could even get crazy and use a SunTour 6 speed long cage der too.
I ended up getting a Suntour VGT Luxe on ebay. It's a bit older than my bike, but I'm going for a classic "Velo Orange" look on this cycle and it looked the part. Hopefully I did well?
The LBS replaced the chain, I think it's a 6 speed. I assume that will work?
With regard to the freewheel, any suggestions for upgrading the existing freewheel to a Shimano one that shifts easier? I've got a 14-30 5 speed Suntour on there now.