pic: Madtown Marauders Wheel

[R.C.]

Originally Posted by Raul

Sorry - I do not believe they weigh .05 lbs - maybe someone made a mistake in where the decimal point belongs? Who told you or where did you read a spec that says it weighs that much - you should check your source again.

.05 lbs is less than 1 ounce. There are no materials known to us on earth that are that low in density that can hold 120 pounds in the configuration of that wheel.

Sorry guys, I don't know what to tell you. It is what the engineers told us at Sunrise Medical and it doesn't show up on either our bathroom scales or our scale at school. It measures every .25 lbs. So I guess itz under .25 lbs.

[Akash Rastogi]

Originally Posted by rc_cola1323

Sorry guys, I don't know what to tell you. It is what the engineers told us at Sunrise Medical and it doesn't show up on either our bathroom scales or our scale at school. It measures every .25 lbs. So I guess itz under .25 lbs.

Yea please just find out what material it is. And if you can find a scale that measures even smaller increments that would be cool.

As for mounting the sprocket, I would go with Art's idea. U have the machining resources so get to it

[Vikesrock]

Originally Posted by rc_cola1323

Sorry guys, I don't know what to tell you. It is what the engineers told us at Sunrise Medical and it doesn't show up on either our bathroom scales or our scale at school. It measures every .25 lbs. So I guess itz under .25 lbs.

If your custom wheel is .3 lbs and is set up for either a sprocket or live axle it will likely be lighter than or equal to the pictured wheel with a setup such as the one Art described to drive it. Combine this with the strength concerns mentioned by some of the posters and you may want to look at what you really gain before deciding to use this wheel.

Sponsor donations are nice, but the parts always need to be evaluated against the alternatives.

[R.C.]

Originally Posted by Vikesrock

If your custom wheel is .3 lbs and is set up for either a sprocket or live axle it will likely be lighter than or equal to the pictured wheel with a setup such as the one Art described to drive it. Combine this with the strength concerns mentioned by some of the posters and you may want to look at what you really gain before deciding to use this wheel.

Sponsor donations are nice, but the parts always need to be evaluated against the alternatives.

I was thinking the same, I was just wondering i there could be a lightweight solution to mounting a sprocket to this thing. If I have to make an aluminum hub it will probably be more than the custom one we have now. So i'm gonna try it out and see what i can do what this thing and i'll post up a pic with a sprocket, hub and the wheel all attached in a few days.

Preseason Madness Rocks!

-RC

[vivek16]

You could always use them as idler wheels.

From what I've heard, the spokes at not meant to be torqued. Sure they may work fantastically as casters but until you can find a way to test how well the wheel takes torque, you can't trust them powered on a FRC bot.

-Vivek

[Sam2197]

looks nice. but i agree with a lot of other people. in FRC i dont think it would survive. but off season stuff it would be great to work with. although for a wheel chair it may be great but think about when you put all of that torque on the center of that wheel. it would probable rip apart after a while.