Anyways, a friend of ours expressed an interest in one of the scooters. She is 100 lbs soaking wet and an adrenaline junkie, so I chose to stick with the stock gearing for top speed and go with 36V.
I chose to raise the deck to stand up 3 12V 8AH batteries instead of lowering the battery tray. It was definitely easier, but I think were I to do it again I would take the harder route and lower the tray, I think that looks cleaner. But, this build only took 4 hours, so pretty easy.
The original plan was to make some full circumference wood risers, but I went the lazy route, LOL. I needed 1.25" of rise, and since I could get 1.5" from sections of 2x4, I went there. I bolted the 2x4 risers using the bolt holes for the bar that held the batteries down and wrapped them in black duck tape just in case they could be seen. It turns out that was only necessary on the rear riser.
This obviously left a pretty big gap...
So I found some extra garage door weatherstrip to fill the gap!
Not perfect, but easy.
This model had the on/off throttle. Since I was planning on upgrading the controller on our MX500 anyway, I used the 36V throttle and controller on this scoot. Since the controller is larger than the stock one, I had to stand it up. By trimming the "ribs" in the tray and cutting off the mounting tabs, it just fit. It is held down with industrial grade velcro.
Next up, put the batteries in, and wire everything up. The only hitch was wiring into the fuse and on/off switch since it was a little different than the MX500, but easy enough. Added some extra padding to fill the small gap between the top of the batteries and the deck.
48V Razor MX500 w/ yk42-4 50A controller
48V 100A Industrial Motored Razor Dune Buggy - Sold
60V Huffy Panama Jack, 9C hub motor, 31 MPH - Sold
89V Schwinn Cruiser Supreme, GM 901 hub motor, 52 MPH - Sold