I am planning to replace the drive train on my trusty 1992 Trek 820. It has the original Shimano 200GS components. The chainrings are showing some wear and I would like to lower the gearing to preserve my knees and avoid mashing up hills. The trigger shifters and derailleurs still work flawlessly.
Crank is riveted 48-38-28. I have an older Shimano Deore crank that seems to match the original well so that the chain line is preserved. I wish to put 44-34-24 or 46-34-24 chainrings on it. Will the original derailleur work with the smaller chainrings?
Freewheel is a 7 speed 12-28. I would like replace it with a Nashbar 7 speed 13-32. Will the original derailleur work with the larger geared freewheel?
If one or the other are not compatible I may decide to change gearing on just one, replacing the other with same as original gears. I doubt that I would be replacing derailleurs and shifters on this bike.
Any recommendations for the chain?