bench grinder problems HELP!!!

[78kitcar]

just bought a new 6" grinder off craigslist still in the sealed box (ryobi) Not the greatest tool but good enuff for what i need anyways it came with 2 stone wheels and i purrs like a kitten my problem is i replaced the stone wheels for 2 wire whells and the thing does the river dance all over the shop.does anyone have an idea what to do to stop the dancing? i tried different combos of wheels and mounting nothing seems to work.
THANKS GUYS

 

[waggin]

I made a mount for my buddies using one of those old doughnut tires(spacesaver spare),had to cut part of the rim away(just the lip)so the rubber would contact the floor,work's awesome!

 

[homecloned]

Great idea waggin, I was going to suggest some rubber under it bolted to a bench but your idea sounds much better. Stuff still shakes around on the bench my way.

 

[78kitcar]

i have rubber bushings under it now.Its funny when i first got i opened it set it on the counter unmounted flipped it on and she never moved so im clueless

 

[clhyer]

Wait a sec. You said this thing purrs like a kitten? Is that with the stone wheels attached? If so, the wire wheels are way out of balance and I wouldn't use them as they would most likely damage the bearings after a lot of use. If it danced with the stones they might also be out of balance.

I mounted my grinder to a piece of 2x10 and use clamps to hold it to the workbench. When I am done with it I can unclamp and sit it under the bench out of the way. I hadn't thought about using a rubber pad, but it almost seems like it has rubber feet - I don't remember. Been a long time.
C

 

[78kitcar]

yes with the stone wheels on she'll pur like a kitten as soon as i put wire wheels on it dances all over the place whether its one wheel or both it goes everywhere.

 

[doktor_x]

I'm grasping at straws here, but do the wire wheels fit tightly on the shaft? My reasoning is Ryobi may use a 12mm shaft and the wheels may be 1/2" (or something of the sort). If the wheels aren't concentric, it'd flop around a bit.

 

[duckbuster]

agreed if it is smooth with one it should be with both.

 

[78kitcar]

the arbor sizes are different but with the wire wheels steel bushing are supplied for that reason once the steel bushing are in place everything is tight.

 

[Flatlander]

Wire wheels out of balance. I'd like to caution you on using wire wheels on a bench grinder, better to use them on a hand-held grinder or not at all. Wires fly out of the things.