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Old 03-09-2015, 07:56 AM   #1
jhays79
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Default Mounted a new rear tire, really out of balance...

I mounted a new Dunlop 18" tt100 rear tire to the wheel on my t140. I put the yellow circle on the side wall by the valve stem, it's got two rim locks. I have a static balancer I put it on, and it's a hair over 3oz of weights to get it to balance. Seems like a lot to me. The light spot on the tire is really close to the valve stem. Any advice? Should I get those wheel weights that fit over the spokes, or use the Dyna beads I already have. I used the stick on wheel weights at first, but I don't trust them that much to stay on, plus that's a ton of stick on weights to add to the rim. Any advice appreciated!
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Old 03-09-2015, 08:05 AM   #2
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Default Re: Mounted a new rear tire, really out of balance...

Have you tried to spin the tire on the wheel to move it to a different location,Just a thought.
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Old 03-09-2015, 08:16 AM   #3
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I was thinking that, but I'd like to avoid it if possible. I get paranoid about pinching the tube and putting a hole in the tube, but it's worth a shot

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Old 03-09-2015, 08:36 AM   #4
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Default Re: Mounted a new rear tire, really out of balance...

i'd get rid of the rim locks...only usefull on a dirt bike and are probably what's throwing ya balancing out.... 00.02
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Old 03-09-2015, 09:10 AM   #5
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Yeah the heavy spot is directly between the two rim locks
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Old 03-09-2015, 09:33 AM   #6
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Default Re: Mounted a new rear tire, really out of balance...

get rid of the rim locks. no one uses them anymore.
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Old 03-09-2015, 10:32 AM   #7
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Default Re: Mounted a new rear tire, really out of balance...

Ditto on the rim locks, and the stick-ons work fine.
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Old 03-09-2015, 11:38 AM   #8
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Default Re: Mounted a new rear tire, really out of balance...

Okay, I'm gonna ditch the rim locks. What about the rim lock holes in the wheel? Plug them up with a rubber grommet?
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Old 03-09-2015, 12:11 PM   #9
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Default Re: Mounted a new rear tire, really out of balance...

There are two things that I've seen with this when a tire seemed WAY out of balance and it ended up under an ounce in the end.

1) As has been said, spin the tire on the wheel.

2) If it's a spoke wheel, it might not be true.
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Old 03-09-2015, 12:28 PM   #10
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Default Re: Mounted a new rear tire, really out of balance...

also,unless its on a shaft drive (or like you the balance is so far out), you shouldnt really have to balance a rear wheel, ...because during operation you are adding maybe up to a 1/2lb + of steel to half of your wheel in the form of the drive chain (its only ever on 50-60% of ya sprocket at any one time)...this was pointed out to me by a very good mechanic,since then (late 1970's) I have never balanced a rear and have never had a problem...he said he only ever did it on race bikes when the owners insisted it be done.......

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Old 03-09-2015, 02:29 PM   #11
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Default Re: Mounted a new rear tire, really out of balance...

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Originally Posted by jhays79 View Post
Okay, I'm gonna ditch the rim locks. What about the rim lock holes in the wheel? Plug them up with a rubber grommet?
I don't do anything with them, other than using a rim strip that covers them. I usually run duct tape on the inner rim anyway.
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Old 03-09-2015, 03:29 PM   #12
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Default Re: Mounted a new rear tire, really out of balance...

Ditched the rim locks, remounted the tire, and it was damn near balanced as is. I threw the dyna beads in the inner tube anyways, since I had already bought them. I just put a small piece of old inner tube over the rim lock holes and ran electrical tape around the entire inside of the rim to cover up the spoke nipples. Thanks for all the help guys!
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Old 03-09-2015, 04:22 PM   #13
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Default Re: Mounted a new rear tire, really out of balance...

Dyna beads in a tube is probably a questionable idea. Their company says it's just fine to do, but I have not run across a tire manufacturer yet who recommends it.

I mean, no tube manufacturer expects the tube to be abraded constantly, I wouldn't think.

I've done the golf ball trick in mud tires that wouldn't balance, and it didn't really do anything. If you can get it to balance with weights, it's probably fine.

Although, like Pete, I rarely balance a damn thing and do just fine...
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Old 03-09-2015, 04:41 PM   #14
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Default Re: Mounted a new rear tire, really out of balance...

jhays,
Glad you got your problem sorted out.
I've got a coffee can full of old grungy rim locks if any one needs some .
I change and balance my own tires with simple and basic tools (home made stuff - tire irons, balancer, etc.).
I use my static balance setup to find and mark the heavy point of the wheel assembly before mounting the tire. Then after I've mounted the tire (if you've used a little talcum powder to dust down the tube and tire it helps), I position the tire to cancel out as much of the imbalance as I can. Then it's a simple matter of finishing off the balance job with the minimum of additional balance weights.
The local tire guy gave me a jug of the stuff he uses for mounting tires called Slick-Tack to try out. It's a light blue color and it's slicker than snake shit. Doesn't seem to be corrosive either - I like it.

I realize there are some guys that don't balance there tires at all, but I'm a picky bastard, so I always balance them - front, rear, side-hack, etc.

Geo.
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Old 03-09-2015, 04:48 PM   #15
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Default Re: Mounted a new rear tire, really out of balance...

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Originally Posted by govmule84 View Post
Dyna beads in a tube is probably a questionable idea. Their company says it's just fine to do, but I have not run across a tire manufacturer yet who recommends it.
Plus one on that. Until someone can explain the physics of how the Dyna Beads know how the mass is distributed around the axis of rotation, and the difference between a round and out of round tire, I'll stick with balancing.

Bob
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Old 03-09-2015, 05:11 PM   #16
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Default Re: Mounted a new rear tire, really out of balance...

I've read countless threads debating whether dyna beads work, I'm not concerned about them hurting the tube. I've never heard of them abrading an inner tube in all my research.
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Old 03-09-2015, 05:18 PM   #17
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Default Re: Mounted a new rear tire, really out of balance...

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I've read countless threads debating whether dyna beads work, I'm not concerned about them hurting the tube. I've never heard of them abrading an inner tube in all my research.
Well, consider the fact that adding a tube to a tire is enough for some manufacturers to say that the speed rating is affected. Simply the friction of the tube in the tire that was not designed for it has some sort of affect.

I believe those little Dyna beads are made of a ceramic, commonly used as an abrasive.

So we are now adding friction and abrasion to the thing that holds the air. I'm not out to change anyone's mind - you're a big boy - but I'll be dipped if I can find out how that's not harmful to an inner tube.
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Old 03-09-2015, 05:21 PM   #18
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Default Re: Mounted a new rear tire, really out of balance...

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Originally Posted by govmule84 View Post
Well, consider the fact that adding a tube to a tire is enough for some manufacturers to say that the speed rating is affected. Simply the friction of the tube in the tire that was not designed for it has some sort of affect.

I believe those little Dyna beads are made of a ceramic, commonly used as an abrasive.

So we are now adding friction and abrasion to the thing that holds the air. I'm not out to change anyone's mind - you're a big boy - but I'll be dipped if I can find out how that's not harmful to an inner tube.
Time will tell I suppose...
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Old 03-09-2015, 05:34 PM   #19
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Default Re: Mounted a new rear tire, really out of balance...

If you find you still need a rim lock later, MotionPro makes a lightweight version; plastic lock plate with aluminum stud. I run them on my dual sport appliance, I had become rather tired of ripping the nipples out of tubes front and rear!
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Old 03-09-2015, 05:39 PM   #20
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Default Re: Mounted a new rear tire, really out of balance...

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If you find you still need a rim lock later, MotionPro makes a lightweight version; plastic lock plate with aluminum stud. I run them on my dual sport appliance, I had become rather tired of ripping the nipples out of tubes front and rear!
Damn I hope I don't have that problem!

What kind of tire pressure do you run in your dual sport bike?
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