Need spec help for an OTR KW

KW has glider kits. GET ONE! No regen with your PTO time unloading, no DPF filter to plug,no DEF to buy, not to mention the weight of all that crap. Get a single locking 23,000# drive axle on the back, the "front drive" should be a liftable axle. I would put a 6NZ CAT in it, but a C12 or C13 would be lighter. Mr Haney could tune them, so power isn't an issue. I would get drum brakes with centrifuse drums on all axles. They're lighter and last longer. I don't like super singles but would consider them for your operation. Steel frame with aluminum cross members. I like Meritor axles, Eaton Fuller 18 speed. I think Paccar is sharing suspensions now, I would get Pete's Air Trac suspension, great traction and very stable.

 

If 3.55 gears work with a ten speed, try 3.08 with an 18 speed and leave it in 17th gear unless your empty or cruising at 80mph. Tall 22.5's are the same height as LP 24.5's. I suck at posting links but these are the websites I use to spec a truck. www.cummins spec.com/site/gearing. Also SAE Holland for the fifth wheel will let you compare weights and heights. Remember that an 18 speed is .73 to 1 in 18th, .86 to 1 in 17th. If you use the eaton website it will tell you that they don't make a transmission with .86 to 1 so you will have to type that in manually. You will find that the forementioned tire sizes and the 3.08 will compare to 3.55 1/2 gear down.
If I were specing a dirt truck, I would go with 3.25 gears as it matches with 3.70's If you like 3.55 go with 3.08 If you never need " granny" or "crawl" gears, some guys are going with 2.64's and running in 16th gear.

 

I have a 72 Aerocab flattop I can stand up I'm 6' tall. I would never get the tall aerodyne unless I were pulling a van or reefer. If you get the aerocab with the couch that makes into a bed, you can't get a back window and you lose alot of underbunk storage.

 

I have a 72 Aerocab flattop I can stand up I'm 6' tall. I would never get the tall aerodyne unless I were pulling a van or reefer. If you get the aerocab with the couch that makes into a bed, you can't get a back window and you lose alot of underbunk storage.

 

11R 22.5 tire is the same overall diameter of lo pro 24.5 the tractor will not sit any lower than the trailer.

 

So, what about this truck? It's for Sale!!!
2012 KW T800 62" Sleep O/O spec
Cummins ISX15 450 HP w/Eaton 10 sp
3.55 gears with AG 400L suspension
24.5 on all aluminum