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Old 07-13-09, 08:49 AM   #1
Not the Slowest
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7 speed wheel upgrade option possibility?

My commuter has a down tube shifter, double front and 7 in the back. I am unhappy with my rear wheel as I had it re-built in December and popped 2 spokes (same side) in the last month. It is NOT A Quality Wheel, but unsure what I can get for a 7 speed, weight is NOT an issue.

I would like to know if I can do the following:

Keep set up and put a Mavic Open pro on the back with a 8 or 9 speed cassette.
I know I will be unable to use the 8 or 9, But will this work as index or friction only?

Do you know of a good quality 7 speed wheel ?

Robert
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Old 07-13-09, 09:09 AM   #2
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Originally Posted by Not the Slowest View Post
My commuter has a down tube shifter, double front and 7 in the back. I am unhappy with my rear wheel as I had it re-built in December and popped 2 spokes (same side) in the last month. It is NOT A Quality Wheel, but unsure what I can get for a 7 speed, weight is NOT an issue.

I would like to know if I can do the following:

Keep set up and put a Mavic Open pro on the back with a 8 or 9 speed cassette.
I know I will be unable to use the 8 or 9, But will this work as index or friction only?

Do you know of a good quality 7 speed wheel ?

Robert
I put open pro /w 6600 10 sp hub on and ran it with 7sp casette for a few months using an indexed 7 sp DT shifter,,, worked well...7 sp Casette needs a spacer to attach to the 10 sp hub. Then I changed to a 10 sp casette and 10 sp DT shifter and 10 sp chain...( you will need to spread the rear ,by the way..
Bud
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Old 07-13-09, 09:27 AM   #3
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Originally Posted by Not the Slowest View Post
My commuter has a down tube shifter, double front and 7 in the back. I am unhappy with my rear wheel as I had it re-built in December and popped 2 spokes (same side) in the last month. It is NOT A Quality Wheel, but unsure what I can get for a 7 speed, weight is NOT an issue.

I would like to know if I can do the following:

Keep set up and put a Mavic Open pro on the back with a 8 or 9 speed cassette.
I know I will be unable to use the 8 or 9, But will this work as index or friction only?

Do you know of a good quality 7 speed wheel ?

Robert
Why not ? Adjust your derailleur to go from smallest to biggest and you should be fine. You will probably need a narrower chain though.
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Old 07-13-09, 09:58 AM   #4
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I put open pro /w 6600 10 sp hub on and ran it with 7sp casette for a few months using an indexed 7 sp DT shifter,,, worked well...7 sp Casette needs a spacer to attach to the 10 sp hub. Then I changed to a 10 sp casette and 10 sp DT shifter and 10 sp chain...( you will need to spread the rear ,by the way..
Bud
Spread the rear with a spacer, or numerous spacers?
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Old 07-13-09, 10:08 AM   #5
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Spread the rear with a spacer, or numerous spacers?
spread it so the new wheel fits,,Probably be 130 mm, look on sheldons site for the technique, takes a couple minutes with a 2x4

Bud
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Old 07-13-09, 10:10 AM   #6
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spread it so the new wheel fits,,Probably be 130 mm, look on sheldons site for the technique, takes a couple minutes with a 2x4

Bud
You don't even need to spread it, in my experience. Just squeeze the dropouts open a few mm to put in a 130mm wheel. After a few hundred miles of riding it, you won't even need to do that any more.
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Old 07-13-09, 10:20 AM   #7
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Thanks.

Sounds like my old building techniques.
"If it doesn't fit....make it fit"
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Old 07-13-09, 10:41 AM   #8
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Thanks.

Sounds like my old building techniques.
"If it doesn't fit....make it fit"
I know it sounds sketchy... but it works fine. You just squeeze the dropouts open from 126mm to 130mm (just a 3% change) and put the wheel in. Avoids all kind of difficulties with spreading the frame, and even works with aluminum where it's generally unsafe to permanently spread a frame.

I have two bikes with thousands of miles between them that I've used this way, and not a single problem to report. I asked on rec.bicycles.tech before doing it on my aluminum frame, and found several others who had similarly used this technique without any issues.
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