[littlebike]

This winter switched from belt to chain drive on my sons 96 dyna..We have to re-tighten the chain almost every 3-4 days. With as many times as we have re-tightened it, I don't think its a matter of chain stretch. The axle is not cocked in the swingarm when the chain loses tension and is in the same location as when it was torqued down (65-70 ft.lbs.) Any thoughts?Thanks

 

[Guest]

Is he doing burnouts or riding very hard? Cheap chain?

 

[Hopper]

How many miles you doing in those 3-4 days?
What kind of chain?
If it is a non-Oring chain, then adjust every 300 miles is not unusual.

 

[dfauerbach]

my guess cheap chain had this happen on the kids race bikes I never would have believed a chain could stretch that far it still amazes me it was after every race then got to the point had to take links out. and when i say cheap chain it wasn't a "cheap" chain they were all renthal gold chains i switched over to RK and have been much happier

 

[Loffer]

Are You leaving enough play for suspension upon adjustment? 1/2 " slack or so? Someone sits on the bike and then tighten. .

 

[bobscogin]

The axle is not cocked in the swingarm when the chain loses tension and is in the same location as when it was torqued down (65-70 ft.lbs.) Any thoughts?Thanks

You've eliminated wheel movement in the axle slot. That points to the chain. There's another possibility. Failing swing arm bushings. Have you checked those?

Bob

 

[littlebike]

^^ Ken Will try your idea..with weight on back tire , And yes it is a cheap chain,the one we got from Zippers was a 0-ring chain but I f'ed it up and bought a Tsubaki for 1/2 the price,just to get on the road this summer I guess I didn't read my quote at the bottom of my post. .Thanks for your ideas

 

[Hoofhearted]

Cheap chain isn't always cheap. The company that I used to work for sells "induatrial" chain. Designed for a couple of horsepower at a consistent speed. I ued it on my LSR Norton. One 1.3 mile run and it was shot to hell. I bought top of the line RK and have yet to replace it. Two El Mirage seasons and two Bonneville SpeedWeek meets. Never cheap out on chain. It just becomes to expensive.

 

[Kuda]

Lack of lube will also kill a chain, any chain, quick. An O-ring will last longer, but a regular chain will eat itself in a few hundred miles if it's not lubed enough. I only use O-rings now, usually have to tighten them once, *maybe* twice in the first 500 miles, then it's usually good for at least 3-4K between adjustments...

-Kuda
'49 panchop

 

[Loffer]

Rk ,DID. ones last longer stretch very little. Suspension bikes need to have slack at rider position.

 

[Nottso]

You've eliminated wheel movement in the axle slot. That points to the chain. There's another possibility. Failing swing arm bushings. Have you checked those?

Bob

+1 on this. You'd be surprised at how far shit starts to move as the bushings deteriorate. Definitely worth having a look.

 

[orangeamcs]

Never used tsubaki chains i run non oring on my drag bikes. Ek drz2. I rarely have massive chain stretch problems. I adjust every couple weekends at best. The drag bikes i have make anywhere from 200_550 hp w no syruts or bars. I thi k u may be having a issue somewhere else. Also i would expect a chain to stretch initially so take tgat into consideration. Check swingarm bushing n replace them with one of those delrin kits.

 

[Guest]

I always seen a need for overkill in this area...

http://www.moto-chains.com/site/898528/page/567298

Chose the Tinsel Strength for your application wisely....

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