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Thread: 83 250R chains and sprockets

  1. #1
    Join Date
    Jan 2016
    Location
    Phoenix
    --
    29

    83 250R chains and sprockets

    Need some expertise and experience on this....bought my 250R and it needed a new chain...I noticed there was quite a bit of slack and the axle was adjusted as far back as it could go. Picked up a stock 520 O-ring chain but it barely fit with the axle moved all the way forward...it was tight...too tight. I noticed the old chain was a link or two longer...counted the sprockets and the front was a 14 tooth...so it makes sense the stock chain I purchased was too small. The rear sprocket was a 42 tooth...so I went down to a 39 thinking that would give me enough slack to adjust the chain. Well it gave me too much...and with the axle all the way back it was still too loose. Though I liked the 39/14 gearing for the riding I do. This past weekend I decided to pull one link out of the stock chain to tighten things up...well now it's too short even with the axle all the way up.

    I know the chain slider is gone....that needs to be replaced....don't want to pull the swing arm though. I would like to keep the 39/14 sprocket combo. However one link is either too long or too short even with the adjustments in the rear axle.

    Suggestions? I know one of them will probably just buy a new chain and sprocket combo...I would really like to keeo the 39/14 if I can.

  2. #2
    Join Date
    Feb 2016
    Location
    Stellenbosch, South Africa
    --
    186
    You will have to go back to a 13 tooth sprocket in the front ....
    1983 Honda ATC250R
    1983 Honda ATC200E BIG RED (sold)
    1984 Honda ATC200E BIG RED
    1984 Honda ATC200X (sold)
    1985 Honda ATC70 x 3
    1985 Honda ATC250ES BIG RED
    1988 Honda ATC250ES BIG RED
    1995 Honda Frankentrike 50cc 2-stroke
    2001 Honda TRX90
    2004 Honda TRX300EX (sold)
    2008 Honda TRX250TM
    1976 Suzuki RV90M (sold)
    1967 Vespa Primavera 125
    1958 Massey Ferguson 35

  3. #3
    Join Date
    Jan 2012
    Location
    Carthage NY 250r rules
    --
    2,355
    Get a half link for a 520 chain.
    250r rules

  4. #4
    Join Date
    Jan 2016
    Location
    Phoenix
    --
    29
    Quote Originally Posted by atc300r View Post
    Get a half link for a 520 chain.
    Where can those be had?

  5. #5
    Join Date
    Jan 2016
    Location
    Phoenix
    --
    29
    I should say it would be for an oring Chain.

    Sent from my VS990 using Tapatalk

  6. #6
    Join Date
    Jan 2012
    Location
    Carthage NY 250r rules
    --
    2,355
    I have bought them from my local Honda dealer.Check hardware ,automotive and tractor supply stores aswell.I think they make half links for o-ring chains.
    250r rules

  7. #7
    Join Date
    Jan 2016
    Location
    Phoenix
    --
    29
    Okay I will look around.

    Sent from my VS990 using Tapatalk

  8. #8
    Join Date
    Mar 2010
    Location
    Slidell, LA
    --
    4,738
    This is what I would go with. Primary drive is quality stuff for a competitive price for a stock setup.

    http://www.amazon.com/Ring-Chain-Spr.../dp/B00BG9JCCG


    If you must keep your non-stock gearing setup, count the number of links you currently have and buy a DID 520 o ring with more links than you need and a chain breaker.

    Here is a oem chain slider:
    http://m.ebay.com/itm/Honda-ATC250R-...388?nav=SEARCH

    Here is an aftermarket chain slider:
    http://m.ebay.com/itm/1983-1984-Hond...313?nav=SEARCH
    Last edited by yaegerb; 05-24-2016 at 09:11 PM.
    Feedback for yaegerb: Click Here

    Need something blasted or polished or both? Send me a PM

  9. #9
    Join Date
    Jan 2016
    Location
    Phoenix
    --
    29
    Well it looks like a half link is the only way to go after measuring and comparing. Not having much luck finding a half link for an o-ring but they are available for a regular chain...

  10. #10
    Join Date
    Jan 2016
    Location
    Phoenix
    --
    29
    Quote Originally Posted by miket007 View Post
    Well it looks like a half link is the only way to go after measuring and comparing. Not having much luck finding a half link for an o-ring but they are available for a regular chain...
    All fixed...used a half link and that did the job.

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