what is Solo Adjusting 10-speed direct transmission

There is a solo clutch that is supposed to be adjustment free. Could that be what you are talking about ?

 

Go here I think it answers this pretty well.
http://www.thetruckersreport.com/tr...79-difference-between-10speed-vs-super10.html

 

Sounds like somebody was writing something in order to make it simple but ended up making it complicated.

Figure they mean self adjusting clutch with a 10 speed direct drive (as in no overdrive)

 

It is a direct drive 10 speed with an Eaton Self-adjusting clutch that is marketed as a Solo Clutch.

Sometimes depending on the driver, they can need adjusting.

By the way, the direct drive tranny is better for fuel mileage.

 

How is the fuel mileage better with a direct drive ? Just wondering.

 

This goes to show that even after 35 years, I still learn something new all the time.

 

Solo Clutches Are Notorious For Being Junk.

 

Because with an overdrive unit, there is a cost of energy in the gear set, direct drive doesn't have to have those gears to change the ratio - it is direct for the most part.

When you gear the truck right with the right rear end to the engine and a direct drive trans, there are gains made in mileage.

It depends on who put the thing in and how the driver drives the truck. When I got my first tractor, I had a new clutch put in, and within a year, I had to replace it and replaced the driver - he was always riding the clutch, starting out in the wrong gear and he heated the clutch up so much it warped the pressure plate.