Left rear chain

[Dirtrunner35]

I've seen some mods with chains on the left rear. What does it do and do you need one?

[cavemod]

Its used by some to control shock travel.we pulled the end off a shock a few years back and decided to use one after that.it also helped us control foward bite on the straights.hope this helps

[TCmod]

I'd say yes. You probably should have one. But if you do put one in have the chassis mounted part adjustable. Kinda rule of thumb- Tacky - Shorten chain. Slick - Lengthen chain. With our Shaw car for the upcoming winter series we have our chain set to 48* LUB for the slick.

[bpowell]

Where do you connct chain to rear end on the birdcage or to the axle tube?
Thanks

[TCmod]

Floated clamp or bearing to the axle tube.

[bawilson]

I have a dumb question to add. I have also been concerned about when to lengthen or shorten the chain for hike. I would of thought that on a tacky track you would want the car to hike more to increase roll steer in which would provide better cornering. Can you please explain the why you would shorten on the tack. Thanks in advance!! my brain is a little discombobulated!!!!

[TCmod]

The shorter chain will keep the j-bar angle lower, the lr upper bar angle will be less, and the index of the birdcage would be less. All loosening the car. But it also makes the car tighter with the steer. And lengthening does the exact opposite of all that. I'm kinda all in the process of learning all this myself so hopefully that's all correct.

[bawilson]

thanks for the quick response!!

[dirttrackrocker]

I'm guessing this isn't needed with an underrail car????

[BigBlueFord]

I'm guessing this isn't needed with an underrail car????

Not necessarily true......it controls LR hike (bar angles), etc. It's another adjustment to fine tune your car.

[bpowell]

Does any one make a clamp just for chain?

[TCmod]

I just got a wide axle clamp welded a tab for the chain and drilled a hole and tapped it to put a grease zert in it left it a lil loose and put tight axle clamps around it greased it up and worked fine. Wehr and BSB sell one but the price is ridiculous.

[racin6mod]

WEHRS MACHINE makes one for $45.00 that has the bearing. I make a clamp on chain limiter system that uses shock rubbers to fine tune the system.

[TCmod]

Snap! Thats a lot better than what I found. BSB was sellin theres at $110 I think.

[chasefrehley]

would there be any advantage to mounting the chain solid to the axle clamp with the mount leaning backwards for rear steer?

[TCmod]

I'd say no. I guessing what you're asking you want the pull bar to absorb the impact of when the chain becomes taught. The best the thing to have is something to absorb it up top and it floated on the axle tube.

Exactly like this but I think this guy has it clamped to the tube. I know in IMCA you are not allowed to float it.

http://www.highfly-nphotos.com/USMTS...c3bw3-XL-1.jpg