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Old 06-25-07, 03:29 PM   #1
Hardheadmandca
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9 speed cassette on a 7 speed derailleur?

Can it be done? The 7 speed derailleur is Shimano 600 and is on an older Kestrel 200 SC. Since it was down tube shifters, I can switch it from Index to friction shifting pretty easily - and I like friction shifting.

The spacing for the hubs are 130 mm, so it should physically fit, but will I be able to adjust the limit screws far enough?

Thank you,

Brian
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Old 06-25-07, 03:38 PM   #2
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The derailleur will work, the freehub won't. A 9-speed cassette is too wide for a 7-speed freehub. It may or may not be possible to replace the 7-speed freehub with a 9-speed freehub, depends on the hub. The hub manufacturer may be able to tell you if the freehub can be replaced based on the hub's serial number. If it cannot be replaced then the wheel can be rebuilt with a complete new hub assembly. Been there, done that.

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Old 06-25-07, 03:44 PM   #3
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Derailleurs generally don't give a crap how many cogs are on the cassette. You'll have to adjust the limits and use friction, but should work (had my X0-3 running 9 on 7 for awhile).
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Old 06-25-07, 03:47 PM   #4
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Thank you Al.

It is interesting. I have another Shimano 600 hub at home that I put a 9 Speed cassette on yesterday. It may very well be newer though than the one on the bike.

I'm also trying to figure out how old this bike is so I can know what to expect in the BB. I want to switch it over to a compact crank from the regular double now.

My older Calfee Tetra Pro surprised me with Italian Threads on the BB. This time I want to know before I buy.
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Old 06-25-07, 03:50 PM   #5
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Quote:
Originally Posted by dobber
Derailleurs generally don't give a crap how many cogs are on the cassette. You'll have to adjust the limits and use friction, but should work (had my X0-3 running 9 on 7 for awhile).
Thanks Dobbler, that's what I thought, but wanted to be sure.

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Old 06-25-07, 04:07 PM   #6
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Originally Posted by Al1943
A 9-speed cassette is too wide for a 7-speed freehub.
Good point, I'd had a new wheelset made with a 9 speed hub and used a spacer to mount a 7 speed.
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Old 06-25-07, 04:09 PM   #7
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Originally Posted by Hardheadmandca
Is that Iggy Pop? Snape, huh?
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This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
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Old 06-26-07, 08:44 AM   #8
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Quote:
Originally Posted by Hardheadmandca
Thank you Al.

It is interesting. I have another Shimano 600 hub at home that I put a 9 Speed cassette on yesterday. It may very well be newer though than the one on the bike.

I'm also trying to figure out how old this bike is so I can know what to expect in the BB. I want to switch it over to a compact crank from the regular double now.

My older Calfee Tetra Pro surprised me with Italian Threads on the BB. This time I want to know before I buy.
Yeah, that Shimano 600 hub may be an 8-speed. A 9-speed or 10-speed cassette will fit on an 8-speed freehub.
Sounds like you're on the right track, best to know for sure about the BB/crankset interface.
When I built up my Italian bike I didn't get the BB tight enough the first time and it worked loose. My 1/2" drive beam torque wrench took care of that.
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