Results 1 to 7 of 7

Thread: Advice, please

  1. #1
    mtbr member
    Reputation:
    Join Date
    Nov 2010
    Posts
    463

    Advice, please

    I was given a mid-1980's Stumpjumper with Deore gear. Out back the Deore Deralleur must have worn out, and was replaced with an exage LX-400, but it, too is pretty sloppy. As well, the 6-speed cassette is more than tired, and the hub occasionally skips. I took it apart and cleaned it; its just worn out.

    The bike has had several upgrades and is, uhm, "well-loved". Its also a small, just the size for my daughter in college, and that '80's paint scheme/with patina would look so cool compared to trek 830 I sent away with her/

    I just rolled up a newer hub in the old rear rim (high-end late 90's Ritchey...still straight...yay!), so we can use anything from 7-10 speeds.
    Casettes are easy; 7 speed and 8 speeds lie on shelves gathering dust everywhere. Shifters? I have a selection of crappy low-end stuff, even a brand-new 7=speed twist that might be a good choice for a girl.

    But I dont have a decent rear derailleur. Its for my kid, I'll fork out some money. Local bike shop has a Deore 590 gathering dust, will take $50...but its black and new-looking. Pretty sure it will work with 7- or 8- speed (says 9 on the box).

    Any other ideas? We're going to visit her in 2 weeks; currently available product is best. I would probably pay up to $100 for der and shifter if I really liked it, but something that would work with the 7-speed twister would be cheaper.

  2. #2
    mtbr member
    Reputation:
    Join Date
    Nov 2011
    Posts
    3,779
    You need to check some things. I would expect a 6 speed to have a freewheel and not a cassette - although it is possible.
    The rear triangle is probably 130 mm so a modern wheel may not fit. Could even be 126.
    Any Shimano rear derailleur less than 10 speed and not DuraAce will work with most any Shimano shifter.

  3. #3
    mtbr member
    Reputation: watts888's Avatar
    Join Date
    Oct 2012
    Posts
    6,267
    A new chain would probably help a lot with that skipping. Assuming the new hub you laced up fits, I'd go with 8-speed. super cheap, parts are available anywhere, and durable. 8-speed shifters are only $10 brand new, so choosing a grip shifter or trigger shifter would be your (or your daughter's) preference. I'd get new grips regardless of which shifter I used, so a new grip shifter wouldn't seem out of place. If you wanted to use your 7-speed shifter you have now with an 8-speed cassette, not a problem either. It'll work with an 8-speed cassette, you just have to decide which gear you want to prevent the chain from going into, smallest one or largest one. You could also grab an actuall 7-speed cassette. I'm not sure if your replacement wheel's hub is a 8/9/10-speed hub or a 7-speed hub, if the 7-speed cassette comes with a spacer, or if you can grab a spacer from your old 6-speed cassette. Either way, you can make it work pretty cheap.

    Is the derailure not keeping the chain where it's supposed to be? Cheap acera and alivio 8-speed derailures are only $20 brand new.
    "a hundred travel books isn't worth one real trip"

  4. #4
    mtbr member
    Reputation:
    Join Date
    Nov 2010
    Posts
    463
    Its a 6-speed freehub/cassette held on by the threaded smallest cog. The cogs separate easily, and like some old freewheels, the teeth are twisted a little to help shifting. I'm told this was common until like 1987 or so. The freehub is just plain worn out, and I cant seem to find a replacement (or a new cassette)

    I've already respaced the frame to 135mm, No serious problems and the Cromoly resisted only a little more than Hi-Ten...


    I hadnt considered the Alivio-level shifter/der combo; I guess I forgot. I dont think I would trust an Acera or Altus-level shifter and she's not mechanical enough to keep a cheap derailluer in adjustment. I'll check out the Alivio.

    Thank you, Watts.

  5. #5
    mtbr member
    Reputation: Mountain Cycle Shawn's Avatar
    Join Date
    Jan 2004
    Posts
    12,736
    Look for one on eBay. Shouldn't have to pay more than 10 for a used one.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Nov 2011
    Posts
    3,779

  7. #7
    mtbr member
    Reputation:
    Join Date
    Nov 2010
    Posts
    463
    I'm old; I still kind of adhere to the brick-and-mortar mindset

    Perhaps its time to join the 21st century.

    Thanks for the Jenson links, but if I were to go 10-speed in back, would I need to switch out chainring(s?) and maybe respace with a new BB? Or find a 1x or 2x crankset? Plus, would fitting modern "transformers-looking" gear on a survivor designed to look the part (and not attract attention of thieves?) defeat the purpose?

    I'm going to waste 1/2 hr checking online, I guess.

    Thanks everyone for your attention!

Similar Threads

  1. Advice to beginners looking for advice
    By whoda*huck in forum Beginner's Corner
    Replies: 15
    Last Post: 09-19-2014, 12:17 PM
  2. Internal gear routing in advice frame- advice needed
    By woody74 in forum Frame Building
    Replies: 1
    Last Post: 01-14-2014, 07:34 PM
  3. Bad advice from Nova, seeking more bad advice
    By unterhausen in forum Frame Building
    Replies: 8
    Last Post: 04-20-2013, 08:39 AM
  4. Replies: 18
    Last Post: 02-18-2012, 07:09 PM
  5. Need Advice
    By CripTiK in forum All Mountain
    Replies: 6
    Last Post: 10-17-2011, 11:24 AM

Members who have read this thread: 0

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.