I just moved the original Challenger wheels back with aluminum brackets bolted through one original wheel bolt hole and an extra hole that i drilled on each wheel well. No cutting involved.
This type of set up works okay if you will be using a fiber pad in a commercial setting, but it's not ideal because the wheels are fixed with the deck so it's tricky to get the proper alignment of the deck in relation to the floor. If it's not aligned well enough the machine fights a bit and the pad doesn't contact completely. I have my bolt holes slotted a little so i can adjust and finesse as needed.
Switching to a cotton pad is not an option with this set up without major adjustments.
The ideal wheels on floor set up is a floating head with wheel assembly locked to the handle, like the Orbot, Trinity, Orbitec and Cimex.
That's what I'm working on now for the Challenger.
This type of set up works okay if you will be using a fiber pad in a commercial setting, but it's not ideal because the wheels are fixed with the deck so it's tricky to get the proper alignment of the deck in relation to the floor. If it's not aligned well enough the machine fights a bit and the pad doesn't contact completely. I have my bolt holes slotted a little so i can adjust and finesse as needed.
Switching to a cotton pad is not an option with this set up without major adjustments.
The ideal wheels on floor set up is a floating head with wheel assembly locked to the handle, like the Orbot, Trinity, Orbitec and Cimex.
That's what I'm working on now for the Challenger.