Another chain question and problem

2 replies to this topic
  • Deathdeelr

Posted February 17, 2009 - 08:53 PM


I've been reading all the threads on chain adjustments in the tech section and elsewhere and gear changes and I need some advice and explanation. First off I'm running a brand new Regina o-ring chain of 113 links (plus the master) with Renthal sprockets 14/48.

1. When the chain is adjusted according to the tech article having the swingarm straight out it doesn't loosen up to the book spec of around 2" off the chain guide bolt when I drop the swingarm and reattach the shock. It only loosens up very slightly, maybe a quarter inch off a straightedge. Is this normal?

2. When I spin the rear tire with the chain tensioned I get a thumpety-thump noise as it spins. When I take the chain off the rear tire spins free. There's new bearings in the hub (no road time at all) and I have the rear wheel straight in the frame. The chain seems straight (sprockets aligned). Is this normal?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted February 17, 2009 - 09:27 PM


Any chain is going to make noise/create apparent drag when spinning the wheel.

Be careful when substituting the method in the tech article. The swing arm is not supposed to be "straight out". It needs to be positioned so that it puts the centers of the output shaft, swing arm pivot, and rear axle all on the same line.

Just correctly apply the service manual method and you'll be fine.

  • Deathdeelr

Posted February 18, 2009 - 12:04 AM



Related Content


Need help by Goforaride

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  68 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

YZ450F 03 Sparks driving me crazy by SirAttard

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies

yz400f throttle bog by yz400fmaniac

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • * * * * *
  • Hot  28 replies

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.