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Old 01-13-2014, 10:23 PM   #1
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static vs computer balancing

I'm looking for a place to have some tires mounted this saturday, and was wondering why the opinion on static vs. computer balancing is. It seems the majority of motorcycle tires are static balanced, are there any shops that computer balance tires, or is static balancing just as effective?
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Old 01-13-2014, 10:31 PM   #2
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Quote:
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I'm looking for a place to have some tires mounted this saturday, and was wondering why the opinion on static vs. computer balancing is. It seems the majority of motorcycle tires are static balanced, are there any shops that computer balance tires, or is static balancing just as effective?
I mount my own tires and use a static balancer. I haven't had any issues at any speed. Maybe Patrick will give some input.
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Old 01-13-2014, 10:59 PM   #3
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Mine have been static balance and no problems. I guessing computers a little more accurate and faster.
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Old 01-13-2014, 11:09 PM   #4
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I can show you how to do it yourself, but I'm in bfe. I learned from Jimrad who is also very good at changing tires.
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Old 01-13-2014, 11:31 PM   #5
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All depends on the quality of the equipment and operator.
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Old 01-13-2014, 11:34 PM   #6
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I actually heard somewhere that the Motogp teams static balance. Not sure about the validity of that fact
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Old 01-14-2014, 08:34 AM   #7
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I'd venture to say that 99% of the trackside tire services in most of the forms of racing I've been involved with use static balancers. From the CMRA level through AMA, with speeds over 20 mph.
It's not difficult to do if you take your time/know what you're doing.
One thing about static vs computers, static works off gravity, therefore it never needs to be calibrated.
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Old 01-14-2014, 08:58 AM   #8
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The wider the wheel, the more effective dynamic balancing is, to even out heavy spots on opposite sides of the tire.

I don't see it making a huge difference on a 180mm tire for a motorcycle, and Patrick seems to have confirmed that. On a 300mm+ MC wheel it most likely will make a difference especially between 60-75mph. On cars, it absolutely makes a difference.

Static
helpStaticImbal

Dynamic
helpDynamImbal
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Old 01-14-2014, 09:06 AM   #9
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Static balancing just makes sure the tire/wheel assembly has no heavy spot as it slowly rotates around the axle. Dynamic balancing spins the tire/wheel faster, which exposes any imbalance sideways ACROSS the width of the wheel/tire. There is no way for human eye or hand to read or detect this, so electronics and computer are used to sense and record the "wobble". This is why you see weights stuck on either the inside or outside of the car/truck rim.

Most wheel/tires on motorcycles are not wide enough for any side-to-side imbalance to present itself, even at high speed. I've static balanced probably a dozen sets of wheels by now and have gone triple digit speeds, with no issues.

Now if you are a darksider, or got an ultra fat rear tire conversion, then that might be a different story.

Last edited by Volfy; 01-14-2014 at 09:07 AM. Reason: Senator beat me to it. :)
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Old 01-14-2014, 09:12 AM   #10
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Quote:
Originally Posted by Senator View Post
The wider the wheel, the more effective dynamic balancing is, to even out heavy spots on opposite sides of the tire.

I don't see it making a huge difference on a 180mm tire for a motorcycle, and Patrick seems to have confirmed that. On a 300mm+ MC wheel it most likely will make a difference especially between 60-75mph. On cars, it absolutely makes a difference.

Static
helpStaticImbal

Dynamic
helpDynamImbal
Precisely.
That's why you'll typically see car/truck wheels with weights at a couple of spots to balance primary and secondary issues. Typical motorcycle wheels won't have those issues due to their width/lack thereof.
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Old 01-14-2014, 09:21 AM   #11
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I've never seen weights on more then 1 location on a car tire. And sold a lot of car tires back then. Even now, when I get tires. mounted, I watch and the latest and greatest Hunter machines still only place at 1 point.
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Old 01-14-2014, 09:33 AM   #12
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Quote:
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I've never seen weights on more then 1 location on a car tire. And sold a lot of car tires back then. Even now, when I get tires. mounted, I watch and the latest and greatest Hunter machines still only place at 1 point.
Ed, that's because salesmen never get dirty and look on the inside of the rim...
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Old 01-14-2014, 09:59 AM   #13
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I've mounted plenty of tires.

Was named top salesman in the country at NTW (now NTB ) sent me on an 1 wk science w paid cruise, #2 the following yr.

I sold a chit load of tires. Lol
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Old 01-14-2014, 10:10 AM   #14
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Static works fine like mentioned above. If you want a machine balance I know K's Motorsports near Humble has one.
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Old 01-14-2014, 01:01 PM   #15
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Quote:
Originally Posted by RACER X View Post
I've mounted plenty of tires.

Was named top salesman in the country at NTW (now NTB ) sent me on an 1 wk science w paid cruise, #2 the following yr.

I sold a chit load of tires. Lol
Dynamic balancing doesn't mean there has to be weights at more than 1 location. It just means it could be on either outside or inside of the wheel, depending on how it wobbles. Most often, if the guy is paying attention to the readout, he can nail it with one set of weights. If not, the second spin check will show another imbalance, usually a smaller one, and additional weights put on to fix it.

Most often though, tire shops don't make money if the guy gets too about it. So they skip the secondary check. So... one set of weights.

Last edited by Volfy; 01-14-2014 at 01:03 PM.
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Old 01-14-2014, 01:31 PM   #16
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Most machines are set up to show inside and outside, if your outside is pretty and you dint want weights, they.ll out tape weight as near the face as possible.

I misunderstood Patrick, thinking he meant 2 positions on say the inside vs 1 on the inside and 1 outside.

Ever seen, on the car balancing? Old skool
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Old 01-14-2014, 01:48 PM   #17
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Nearly all car/truck balancers use dynamic balancing, Hunter machines use Dynamic balancing which in 98% of the balances it will have weight on either side, on different ends of the tire. If you have NEVER seen weights put on both sides or at different perimeters of the tire than it was probably in static mode, FOREVER
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Old 01-14-2014, 01:50 PM   #18
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Quote:
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Ever seen, on the car balancing? Old skool
And turning brake rotors on the car. Always thought the justification for doing both are kinda hoaky.
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