Now that is one big rotor
 

Guess the application...

http://media.il.edmunds-media.com/no...518108_717.jpg

2 of those are in Harold's wheelchair?

Hmmm...62mm rotor, 10mm shaft, brought in on a wooden pallet...industrial use I would guess, but narrowing it down might not be so easy...

I wish, maybe then I could surpass my personal best of 8.3mph

Rotors for Motors that drive hydraulic pumps for an Industrial Application?

Material Handling Equipment pumps?

What brand/model chair are you using? When I was paralyzed for 6 months after my accident, I bought the first version of the Quickie All-Court Chair (red one below), but if my back ever gets worse or something happens and I become paralyzed again, I am getting the Quickie All-Court Titanium Chair (silver one below)...it is crazy-lightweight!

http://www.quickie-wheelchairs.com/f...s/QKEEISP1.jpg

http://www.quickie-wheelchairs.com/f...s/QKEEISP2.jpg

Its a rotor from a tesla car

Hell yea...those cars are bad-ass!

Size?

How big are the slats of wood they are on?

2" Slats?

That's what I was going to say. 2-2.5". Rotor I would guess to be 3"x7-8".
Prolly a 1/2" spline.

Who knows, some sort of industrial pump, maybe golfcarts or such.

Edit:
Missed this. Would have thought they were too small for that. I'll have to get a pic of some of the industrial motors we have here. One looks big enough to drive a battleship.

He already said they are for the Tesla electric supercars.

Yep, see my edit I was finshing ;)

Gotcha...I think they are 62mm in diameter with 10mm shafts...I think!

How does that thing power a car? It just looks impossibly small for the application