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Go Back   DCSportbikes.net > Sportbike Operation > Test and Tune

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When in Rome...
DcDesmo's Avatar
Posts: 520
Join Date: September 7, 2005
Location: Arlington
October 28, 2005, 04:34 PM

so I'm new to doing my own mechanic stuff (very basic stuff only) and I took my rear wheel off successfully and got a new tire and now my question is how do I tension the chain properly. I looked at the little tick marks on the swingarm and I can put it back pretty much where it was, but are there any tricks? Also, how do you make sure that your axle is 100% on straight (I mean perpendicular to the swingarm...so the wheel is alligned just right)?
please don't flame me for not knowing the answers if these are really dumb questions...just trying to figure things out....


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whats in your drink?
DRAGULA's Avatar
Posts: 7,808
Join Date: May 25, 2004
Location: Mineral VA. If you know where it is you can pass go
October 28, 2005, 04:44 PM

Unless you moved your chain adjustment it should go back in the same spot.

Tell 'em Large Marge sent ya!
Take care of new riders, we were them, and they will be us.
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GP Racer
blowngt's Avatar
Posts: 967
Join Date: May 12, 2005
Location: Alex, VA!!
October 28, 2005, 05:11 PM

Cheers to ya for taking it off.

Seeing you had to loosen (the extender bolts) and move them towards the front wheel to get the chain over the sprocket you will have to put them back the same way (tighten the extender bolts to the metal plate) and make sure they are even. You can count the number of marks (or measure with a ruler/tape measure) and jut make sure they are the same on both sides of the swingarm and you are good to go, as for tension, I think the rule of thumb is it should be able to move 2 fingers worth (side by side) up and down. Once you are done, just put the bike back on the ground and see how much slack you have, too loose is bad and too tight is real bad You will want to tighten the chain from time to time so Kudos for learning now.

Just a heads up, when you have the rear wheel off, never hit the rear brake Just saving you some grief.

Can't choose between the R1 and the 10R so I am keeping both but settled with an 1198S when I came home

Keep it up!!!!!!!
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Has an idiot exemption
Triple X's Avatar
Posts: 8,501
Join Date: September 29, 2002
Location: Stephens City, VA
October 28, 2005, 07:36 PM

If you want to swing out by Dulles or Winchester I'd be glad to show you.
It will just take a minute.

2015 Yamaha R1
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Suddenly Superstitious!!!
MudDawg's Avatar
Posts: 5,391
Join Date: August 25, 2004
Location: Dulles
October 28, 2005, 10:34 PM

1. You don't need to loosen/tighten the chain adjusters if you are pulling the axle out to change a tire. (Unless you are changing gearing or re-adjusting them.)

2. The bottom of the chain should have about 1 inch of slack in it for the suspension to work properly. Don't ask why, if you had to ask about chain adjusting then the range of motion of a swingarm/shock is beyond you. Just tattoo it to your forehead and move on.

3. Making sure that the axle is perpendicular....simplest way: Sight down the chain from the back of the bike. You really can see if the wheel is even slightly out of adjustment.

4. A simple trick to making sure that you have the chain adjusters snug in the swingarm (assuming they are the type the go into the end of the swingarm). Take a medium screwdreiver. Put it in between a pair of teeth on the sprocket. (with the chain on.) Roll the wheel backwards. It should go to about 1-2 pm if you look at the wheel from the left side of the bike.) Thyat should cause the chain to be nice and tight...pulling the adjusters snug as well. Then tighten the axle snug. You will have to re-check the chain alignment now...it can change slightly due to snugging of the axle. Repeat as necessary with minor adjuster changes.

Simple huh?

I want my baby back, baby back, baby back....Chileeeeee's bay back...
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