Questions about upgrading my 1983 drivetrain

reid-<< I have a twenty-year-old Trek and I'm interested in upgrading the drivetrain to 7-speed
indexed, with bar end shifters. >><BR><BR> << As far as I can tell I need the following parts. Is
this correct?

Shifters Front derailleur Rear derailleur Cranks Chainwheels Bottom bracket Rear hub (I have 126mm
dropout spacing) Rim Spokes Cassette Chain >><BR><BR>

All you need is shifters, rear wheel, rear der, casette and chain. If you get a 7s hyperglide
casstte/rear wheel, you can put 8 of 9 cogs on it, use a 9s chain, use the 9s shifters and ride. Any
shimano rear der, any 9s cassette and chain-

If you get a triple(more $$) you will be able to use all the rear with the middle ring, be somewhat
limnited in the small ring and biggest ring, mostly because of excess wear when cross chained.

Your existing pedals will work fine.

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"

In article <[email hidden]>, [email hidden] says...

Quoted message said:

Greetings all, I have a twenty-year-old Trek and I'm interested in upgrading the drivetrain to
7-speed indexed, with bar end shifters. My plan is to spend the rest of the fall scrounging
for parts and then do the work over the winter. I'd also like to learn to build wheels at the
same time.

Get a copy of 'The Bicycle Wheel' by Jobst Brandt. If you follow the directions, you can build a
good wheel the first timeout.

Quoted message said:

I'd like to spend $200 or so on parts, less if possible. I have some money for this project, but
not enough for a new bike, so that's not an option.

That should be more than enough.

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As far as I can tell I need the following parts. Is this correct? Shifters Front derailleur

probably not.

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Rear derailleur

Definitely.

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Cranks

Probably not.

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Chainwheels

Should come with your cranks.

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Bottom bracket

Depends on whether you switch your cranks.

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Rear hub (I have 126mm dropout spacing)

126mm hubs will accept 7sdp freewheels.

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Rim Spokes

If you keep your original hub and get the same rim, you don't need to replace reliable spokes. You
can read about this in the book above.

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Cassette

If you keep your current wheels, you will need a freewheel.

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Chain

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Questions:

1. Which of these parts can I reasonably expect to find used in decent shape?

BB, cranks, not necessarily the chainrings. Any modern Shimano indexing derailleur, except for pre
9spd dura-ace, will work for you. You may want to get a newer lightly used rear derailleur.

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3. Will my existing pedals work with a new crankset?

What pedals do you have now? What crank?

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4. I have heard that 8-speed Shimano bar end shifters work with 7-speed cassettes. Do they work
well, or just adequately?

Adequately. Try to get 7spd, if possible.

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5. Does this plan sound generally sane, and am I missing anything?

Sounds sane. You should be able to do this for under $200. Especially since you are looking to get
used parts.
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Alex __O _-\<,_ (_)/ (_)