pic: Madtown Marauders Wheel
 

Re: pic: Madtown Marauders Wheel
 

That looks awesome. Now what is the weight and its dimensions? Also how are you driving it?

Re: pic: Madtown Marauders Wheel
 

Sorry, took a bit to write the description.

Re: pic: Madtown Marauders Wheel
 

To be blunt, there is no way those spokes are not going to break.

Re: pic: Madtown Marauders Wheel
 

I'm wondering the exact same thing. Unless the picture is at an angle and we don't see the full spoke?

RC did tell me that Sunrise Medical told them the wheels were tested and tested again. They were concluded to be stronger than Al.

RC, did they say what plastic it is? Because although I would trust their engineers, I am a bit skeptical. Don't know if they'd be fit for an environment such as FRC fields and matches.

Re: pic: Madtown Marauders Wheel
 

Yeah, they did not say what plastic it is and they did say it is stronger than AL. These guys build quality stuff and their whole company is about quality. Cory, we have tried breaking these spokes and this wheel is pretty solid. We will test these wheels out before season starts. What i need right now are ideas about mounting the sprocket. Remember this wheel has to last 8 years on a wheel chair that holds a 120+ pound person.

Re: pic: Madtown Marauders Wheel
 

You might be able to use AndyMark hubs and attach sprockets to them.

You can use the axle to align the hubs and wheel and keep things centered, and then possibly bolt through front to back (i think the hubs have six holes) and sandwich the wheel between two hubs or a hub and a plate.

Re: pic: Madtown Marauders Wheel
 

You could maybe try pressing in a keyed hub of some kind possibly with jb-weld or some other strong epoxy as well. Unfortunately those wheels look really difficult to adapt to.

Re: pic: Madtown Marauders Wheel
 

how about gluing a plate to the outer wheel rim and bolting the sprocket to that?

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Here's a link to a better view:

http://www.team1323.com/Pages/wheel1.html

Re: pic: Madtown Marauders Wheel
 

It's not hard to use a wheel like this, but get ready for some machining. The easiest way I can think of is to make two plates that sandwich the wheel with half of the spoke profile milled into them each, so they fit snuggly into the wheel. Then use bolts to clamp the two plates together, trapping the wheel and using milled grooves and the spoke pattern to transfer the torque.

Then to power the wheel, either drill a hole pattern into these two sandwiching plates for a dead axle drive train, or make one of the pieces out of aluminum (the other could be polycarbonate to name an example) and broach it for a live axle.

Re: pic: Madtown Marauders Wheel
 

[fist shaking/] argg... Dutra beats me to it... [/fist shaking]

Terrific their engineers might be, but I don't think my grandmother or her walker would last long in a FIRST match :cool: Although I dare say she’d try and make me proud :cool:

BTW, your link is broken RC.

Re: pic: Madtown Marauders Wheel
 

I fixed the link, it was being stupid!

Re: pic: Madtown Marauders Wheel
 

Lol.

We might hold these off for non competition robots too btw. Doesn't have to be strictly for FRC either.

Re: pic: Madtown Marauders Wheel
 

If you're gonna go to all that trouble, you might just want to machine a whole custom wheel from aluminum.