Results 1 to 14 of 14
  1. #1
    mtbr member
    Reputation: lamp no 3's Avatar
    Join Date
    Jun 2008
    Posts
    144

    help a fellow soon to be singlespeeder

    I plan on going singlespeed soon enough on my 08 GT Avalanche 3.0 disc but I was wondering, If I go single speed, do I have to run a chain tensioner or can I run the bike without a chain tensioner real clean looking, you know?

    also, what do I do with my cranks?
    26'er GT Avalanche 3.0 Disc singlespeed oh yeah...

    Why is adjusting derailleurs like rocket science to me?

  2. #2
    .
    Reputation: Timon's Avatar
    Join Date
    May 2008
    Posts
    1,499
    take the granny & big ring off, and the middle should still work fine as far as the cranks go. may need to get some shorter chainring bolts though.

    it is possible to find a 'magic gear'....aka a cog/chain ring combo that fits snuggly (tensions itself perfectly) when you have a new chain. you'll probably need a half-link, and a couple different sized cogs/chain rings to swap back and forth until you find a combination that works...and then you'll more or less be stuck with that. and you may end up buying new chains more often (under $10 for a pc-1, not too big of a deal)....because the chain wear will make the chain look droopy. (functionally it'll be fine...but atheistically it may look funky)

    the other option is to buy an eccentric rear hub ($130)

  3. #3
    AZ
    AZ is offline
    banned
    Reputation: AZ's Avatar
    Join Date
    Apr 2009
    Posts
    19,198
    Use bmx chainring bolts. They are the right size for one chain ring , 5 mm as I recall .

  4. #4
    nothing to see here
    Reputation: Stevob's Avatar
    Join Date
    Feb 2009
    Posts
    3,264
    I have an '05 or '06 (I think) GT Avalanche 1.0 converted to single speed, running a magic gear of 33:16, with a half link, and dedicated ss cog at the rear. The new chain has a little slop, but it hasn't caused me any problems yet, and I do give the bike hell. I would think that 34:17 would be perfect, as this should eliminate the need for the half link.

    But that's assuming that the '08 has the same length chainstay as the '06 (42.00cm), which I think it does.
    I see hills.

    I want to climb them.

  5. #5
    bikexor
    Reputation: derockus's Avatar
    Join Date
    Mar 2009
    Posts
    229
    Quote Originally Posted by nomit
    take the granny & big ring off, and the middle should still work fine as far as the cranks go. may need to get some shorter chainring bolts though.
    I've found you can usually luck out and use the little washers that space the chainrings to fill the gap when you need shorter chainring bolts. Saves a trip to the LBS and a couple bucks. If they don't have washers or they're the wrong size, just get some washers at a hardware store, no biggie.
    Little Shred Riding Hood

  6. #6
    mtbr member
    Reputation: traffic002's Avatar
    Join Date
    Dec 2008
    Posts
    1,938
    Quote Originally Posted by Stevob
    I have an '05 or '06 (I think) GT Avalanche 1.0 converted to single speed, running a magic gear of 33:16, with a half link, and dedicated ss cog at the rear. The new chain has a little slop, but it hasn't caused me any problems yet, and I do give the bike hell. I would think that 34:17 would be perfect, as this should eliminate the need for the half link.

    But that's assuming that the '08 has the same length chainstay as the '06 (42.00cm), which I think it does.
    Can you explain how a half link works? I'm having difficulty picturing this.



    My friend and I both have old HT that seems like it'd be perfect for converting SS for the local trails.

  7. #7
    .
    Reputation: Timon's Avatar
    Join Date
    May 2008
    Posts
    1,499
    Quote Originally Posted by traffic002
    Can you explain how a half link works? I'm having difficulty picturing this.



    My friend and I both have old HT that seems like it'd be perfect for converting SS for the local trails.
    Attached Images Attached Images

  8. #8
    mtbr member
    Reputation: traffic002's Avatar
    Join Date
    Dec 2008
    Posts
    1,938
    Quote Originally Posted by nomit
    Bravo!

    Thanks.

  9. #9
    one chain loop
    Reputation: fishcreek's Avatar
    Join Date
    Apr 2007
    Posts
    2,360
    fig.2 is wrong
    everything sucks but my vacuum cleaner.

  10. #10
    .
    Reputation: Timon's Avatar
    Join Date
    May 2008
    Posts
    1,499
    Quote Originally Posted by fishcreek
    fig.2 is wrong
    explain?

  11. #11
    mtbr member
    Reputation: traffic002's Avatar
    Join Date
    Dec 2008
    Posts
    1,938
    Quote Originally Posted by fishcreek
    fig.2 is wrong
    I get it. A "link" consists of one narrow section and one wide section. The half link joins a narrow section to a wide section using only "one" section rather than "two".

  12. #12
    mtbr member
    Reputation: ernesto_from_Wisconsin's Avatar
    Join Date
    Jan 2004
    Posts
    3,996
    Quote Originally Posted by nomit
    explain?
    it should go to 11 and it doesn't

  13. #13
    one chain loop
    Reputation: fishcreek's Avatar
    Join Date
    Apr 2007
    Posts
    2,360

    A+

    Quote Originally Posted by traffic002
    I get it. A "link" consists of one narrow section and one wide section. The half link joins a narrow section to a wide section using only "one" section rather than "two".
    got it right
    everything sucks but my vacuum cleaner.

  14. #14
    I'm with stupid
    Reputation: hitechredneck's Avatar
    Join Date
    May 2009
    Posts
    5,666
    As a matter of fact i have "said" bike that i turned into a SS last week. I got it from a guy for a good price. Decided that a SS would be fun to build up with parts i had laying around to see if i liked it. So i got this bike 3.0 and trew away the kendas and put on some 2.0 maxis larsons. used a old set of firefex cranks. pulled the granny and big ring and put on bash guard. pulled stock breaks and put on some shimano hydros i had from a take off bike. and the forte SS conversion from perfomance and ditched the stock saddle for a forte carbon one. Into the bike for a total of about 200 bucks. so far having fun, and seeing if i want to stick with this SS thing. Just to warn you with stock fork, wheels, tubes, bars, seat post, and stem, this is a pretty heavy bike. mine came in a around 28 lbs. but i imagine that you could shave weight pretty quick if you changed some things out.

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

mtbr.com and the ConsumerReview Network are business units of Invenda Corporation

(C) Copyright 1996-2018. All Rights Reserved.