Originally Posted by Krono
... what would gives almost the same gearing reduction but at the added cost of a new chain, as 13/42 allows you to keep the stock chain.
You wouldn't really need a whole new chain. You could get another master link and add enough links to make it work. I have run chains with 2 master links many miles with no trouble. Plus, it makes it easy to switch back if needed.
I also like Sanford and Son but, since I am not a junk dealer in 1970's Watts, I find it hard to criticize his methods.
'83 XT 550
'78 XL 350
'73 XL 250
'72 XL 250 (Needs "assembly")