Heavy diesel mechanic student, looking for guidance for project

So are you wanting to know how these trucks should be spec'd to do their respected jobs?

 

I think you would get better information if you contact a motor carrier in your area that is actually doing those jobs versus a truck dealer. Ask for a fleet manager and start by showing proof you're a student doing actual research and not just someone trying to get free advice from someone else to start or improve your own business.

 

If this is a real project, I have to say that it is a pretty cool assignment. I don't know diesel mechanic wise if you would actually be able to use this information but this assignment should def. be given to some of these guys on here always asking about what truck they should buy and how to become an O/O. I don't know if you are operating on any kind of restrictions such as do the components have to be new or if its a hypothetical to design the best fairy tale unit. I really don't wanna get long winded on here, but for the long haul, I would spec out a cat 3406E motor in any type of aerodynamic tractor. kw t660 or 600/ t800. match it with a 13spd/18spd eaton, 3.36 rears or lower for your best highway fuel miles and you said time was a factor. I would put the tractor up on high rubber, your average cruising speed will be in the high 70s low 80s with running the truck in the sweet spot. Some guys will dispute my motor choice but either way go with something older to avoid def requirements. For your short range wood hauling aspect go with a daycab setup with a much higher rear for pulling. western star has a good platform for rough roads that are bumpy and dish out a beating on the equipment. Good luck with your project and its cool to see real life scenarios thrown out there.

 

For your woods truck, may I suggest a kw. Either a W900 or T800.

A heavy spec extended day cab...

11-5/8 x3/8 frame (maybe a double)

550-600 hp ,18 speed trans and 4.10 rear gears on 11R24.5 rubber.

20/46 axles with full locking rears. I'd do Hend primax air ride or haulmax suspension .

Heavy duty cooling and electrical systems.

Small fuel tanks, maybe even steel.

Not sure what your weight limits are....? So tare weight is a minior issue to think about.
If your (theoretically) paid by the cubic meter with bonuses. The more wood you can stack on the better........


Hope this gets you started.....