V
Veggie
Guest
I just completed a 7 speed freewheel to 8 speed cassette conversion. I
was able to keep the vintage Shimano SIS rear derailer, as many on the
net had said.
When I first tried it out, the derailer was preventing extreme gear
combos. It couldn't do the left most chainring and rightmost cassette
cog, and vice versa. The middle chainring could use all cassette cogs.
I had since adjusted the rear derailer to allow all combos.
It made me wonder... Should extreme combos be allowed? It seems to put
side bending forces on the chain, as it is straight when on the
ring/cogs but then has to bend diagonally. How do 9 cog cassette users
deal with this?
was able to keep the vintage Shimano SIS rear derailer, as many on the
net had said.
When I first tried it out, the derailer was preventing extreme gear
combos. It couldn't do the left most chainring and rightmost cassette
cog, and vice versa. The middle chainring could use all cassette cogs.
I had since adjusted the rear derailer to allow all combos.
It made me wonder... Should extreme combos be allowed? It seems to put
side bending forces on the chain, as it is straight when on the
ring/cogs but then has to bend diagonally. How do 9 cog cassette users
deal with this?