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Correct me if I'm wrong...(6 posts)

Correct me if I'm wrong...look271
Feb 9, 2003 4:47 PM
Isn't it an easy swap to put a 7 speed freehub on a 6 speed? I have an 80's Nishiki with Suntour indexed 6 speed shifters. It is due for a new drivetrain and if I can get another gear, it'll make me happy. The shifters have 7 positions, so I just adjust the limiting screws, right?

Thanks!
I did it on my MTB but ...Humma Hah
Feb 10, 2003 3:40 PM
I found a surplus wheelset cheap, with a 6-speed rear corncob, and tried it on my 3x7 MTB. That worked reasonably well with a little tuning of the rear der, but I was limiting one stop. I didn't try the other way. The biggest problem was that swapping back and forth between the wheelsets (one off-road, the other road slicks) always involved a der re-tweak.

I later screwed the 6-speed cob off and screwed on a 7-speed, and that worked slick, eliminated the need to tweak the der when changing wheels.

At present, that wheel is on the cruiser, rigged with an 18T SS freewheel. I think I've gotten my money's worth out of it.
I did it on my MTB but ...M_Currie
Feb 10, 2003 4:24 PM
A narrow-spaced 7-speed freewheel will fit on a wheel made for a wide-spaced 6, which is presumably what is involved here, since Suntour never made an indexed narrow 6. On the bike in question, though, if the shifter is a Suntour 7-speed, I don't think it will index on any but a Suntour 7-speed freewheel, because Suntour 7-speeds are irregularly spaced.
I did it on my MTB but ...look271
Feb 11, 2003 7:06 AM
Thanks for the info. Lot's-o-luck finding a Suntour 7 speed freewheel, right? =) Maybe Harris cyclery.
This is a retro forum ... install friction shifters ...Humma Hah
Feb 11, 2003 11:22 AM
... and any cogs you like! ;-)
This is a retro forum ... install friction shifters ...look271
Feb 12, 2003 6:31 AM
Have those too =)