Question about 3M 3x1/8x1/4 8amed 3m Exl Unitized Wheels

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3M Gamma Rim Wheel

I found a new 3M Gamma Rim Wheel, 7A-80, 3000RPM, 12x1.
What kind of wheel is this?

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You have a very old product that was in development by 3M in the early 1990's but was discontinued - maybe because, as I recall, the developer lost a finger while testing a version of this wheel (not fact - I do know he was injured but do not recall all the details.

I would not use this wheel if I were you. But I would like to buy it from you to show some of our R&D people what 3M was working on.

Dodd Latimer (614-264-6713)

Posted on Feb 27, 2009


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After removing the front lug nuts and small center nut , i am not able to remove the wheel and tire

in past experience I've seen the center of the wheel actually rust or just from normal road grime stick to the hub I had to kick the outer edge of the rim if that don't get it loose dictating on the kind of rim you have can use a pies of wood so you don't damage the rim but put the wood against outer edge of rim and hit it with a hammer will have to go back n forth from left to right side of wheel but it will come loose

please keep in mind this only works if all lug nuts are indeed off the center nut you was talking about does not hold the rim in place it hold the axel tight in the hub, which I am assuming you have a front wheel drive vehicle due to your question

Aug 30, 2014 | Cars & Trucks

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I am replacing the rim on my 2000 zx6r ninja. I got a new rim but need to know how to take the wheel assessories off the old rim and put them on the new rim.

Hi, best thing is to get the tyre removed and fitted at a reputable garrage, not sure if you have a brand new wheel, in which case you will need to remove and replace the bearings and seals from the wheel, seals just push in and bearings are a tight fit and often need renewing when removed, fit into new wheel in the same way, using a lite grease when re fitting, most discs are handed left and right, locate the direction of rotation markings which you will find on one of the spokes on the wheel, remove discs 1at a time and replace on to new wheel on the same side as that it was previously fitted on the old wheel, good luck

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My 2004 Campy Neutron rear wheel needs a new rim. Who overhauls these wheels and are parts available?

Doubtful that you will be able to find an exact replacement rim. That said, I would seek out a bike shop near you that specializes in racing bikes and more importantly Campagnolo. They will be able to contact Campy directly and find out what solutions are available to you. The wheels have not changed much in the last 6-7 years but enough to make a call to campy necessary to ensure that a suitable rim is still available.

Once that is found, then the shop will be able to rebuild the wheel for you.

Otherwise look on EBAY and other on-line sources for a replacement rear wheel.

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I have a roper riding mower that needs a new rear tire, the wheel has no lug nuts, is there some kind of trick to release the wheel?

The wheels are not designed for easy removal. You have to pop off the hub cap, remove a retaining ring (which is easier with a special tool), and then pull off the wheel (which may require a special puller tool). So don't do it. Jack up the tractor and you can remove and replace a tire on the rim without taking the wheel off.
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Is there any problem with mounting a 24x1.75 tire on a 24x1.375 wheel? I am building a 3 wheel recumbent bike and the 3-speed geared hub I found is from a Huffy bike that had 1.375 tires and wheels. I...

Strictly speaking:

Typically, 24x1.375 (1-3/8") wheels are either 540mm ("E5") or 547mm ("S5") in diameter. (Yes, annoying as it is, 24 inches doesn't always mean 24 inches!)

If you're planning on fitting a 24x1.75 tire, make sure it is the proper diameter to fit the rim. Since the wheel was from a Huffy, it's probably an S5, or 547mm rim.

Practically speaking:
Any 24x1.75 tire will probably fit the rim. As long as the tire's bead seats on the rim, the 3/8" difference in width should not present any problems.

Good luck!

more info on tire/wheel sizing:

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