Cycling Equipment · Public discussion

Replacing Gears/Drivetrain/ETC.

Started by rotherc · · Last activity · 3 posts · 680 views

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Original section
Cycling Equipment
Published
16 April 2006
Last activity
17 April 2006
Original author
rotherc
Posts
3
Discussion status
Public discussion
Total views
680
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0
Topics
Bottom bracketsRear derailleurs

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  1. Original post
    rotherc
    Archived post
    #1

    Hi Everyone,

    I have an old Univega carbon fiber road bike with Shimano components. I've had it tuned up at the bike shop over the years but these components are very old and I've had performance problems with them.

    Forgive me for not knowing the proper terms, but I am most interested in changing the 'crankset' - the part with teeth on the assembly where you pedal.

    I have two rows of teeth on the crankset. I want one with three rows -- my roomate's road bike has this. I'm looking online at rei.com and they're also talking about chainrings. Maybe I can just buy one? I want gearing so I can climb hills better.

    I also want gearing so I can go fast on the downhills -- my chain has fallen off a few times when I'm pedaling hard. Screws are always getting loose on the chainring.

    I'm afraid to buy anything because I don't know what works with what. I don't know what's important, teeth, etc. Since I have ultegra parts could I get this set?

    rei.comProductDisplay

    How difficult installing something like this? I think part of the fun of this project would be working on the bike and learning how to do it.

    Appreciate your advice and guideance.

    -C

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  2. Retro Grouch
    Archived post
    #2

    The rule of thumb is that you can rarely change just one part on a bicycle. Everything works together so, when you change one part, you wind up having to buy something else to make it work.

    How many cogs on the back does your Univega have? If it has 9, and you want it to look and work like a factory installation, you will need a new crankset, new bottom bracket, new front and rear derailleurs.

    That's a lot of new stuff. It might be more cost effective just to buy a whole new bike.

    Report
  3. rotherc
    Archived post
    #3

    Thanks for the advice. That's what I was afraid of. As I start pricing things out and thinking about the work I'll need to do to install it I think you might be right and it might be better to get a new bike.

    Retro Grouch said:

    The rule of thumb is that you can rarely change just one part on a bicycle. Everything works together so, when you change one part, you wind up having to buy something else to make it work.

    How many cogs on the back does your Univega have? If it has 9, and you want it to look and work like a factory installation, you will need a new crankset, new bottom bracket, new front and rear derailleurs.

    That's a lot of new stuff. It might be more cost effective just to buy a whole new bike.

    Report

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