21 speed

Thought I might try this post in the oil field section and see if I have better luck.

My brother is a geotech engineer, owns his own company, and just a remote control, tracked, drill rig. As part of the package, a truck and trailer came with it. All I've seen so far is pics. The truck is a KW straight truck, in a flatbed configuration. Don't know the model number. Has an eaton fuller tranny and it looks like it's a 21 speed. I say that cause it has 7 gears and the switches that you see in 13 and 18 speeds. Are the lower 7 gears for off road only or just like 5 of them? Has anyone used a 21 speed? He's expecting me to train one of his people on how to use it, and I'd sure like a little info before just jumping in doing some OJT. Thanks.

 

I had already pulled that one up. Thanks.