Need help with semi truck gear ratios and front wheels

[novaris]

I'm converting my scania r470 to a 4x4 and running it off road (sandy, grass)
I plan to get a compact single speed transmission since the size of the stock transmission it makes it difficult to fit u joints

1. So i hope someone can illustrate how fast can it go on the 3 gears so i would know which the pinion gear to get if i want to as fast as a ta01 hummer on stock motor and gear

2. Where can i find suitably sized hex wheels for the front axles apart from the rear inner wheels?

[novaris]

anyone?..

[ricm]

I don't know how fast a TA01 hummer goes....you'd have to back calculate knowing the gear ratios in each model, also taking into account the difference in wheel diameter...a bit more info about the TA01 and could work it out - motor rpm? Gear ratios in the drive train? Wheel diameter?

For the front wheel drive, get some super single rims from the container trailer or reefer....they have a hex drive like the standard rear rims