Keep an Eye on the Left Knee...

[eagle19952]

 

http://www.yourepeat.com/watch/?v=HrbvQLxCjLM

Sweeter yet !!  Turn your volume up 

http://www.yourepeat.com/watch/?v=K2zwd1iazvU

[trucktramp]

I thought that was how everyone shifted trucks and busses.    The guy that taught me to drive a truck would sock me in the leg if I had my foot on the clutch so I stopped using it except starts and stops.  He said it saved clutch wear.

[HB of CJ]

We were taught to use the clutch up and down shifting and starting and stopping.  Also told that the clutch was not a neutral gear and that is why they included such in manual trannies.  A Clutch is intended to break torque so we could up and down shift.

Different techniques for different fools.  That man is only one big mistake away from causing expensive drive line, tranny or even engine damage.  He will get tired.  He will get impatient.  He will eventually make a mistake.  Then who pays for the damage?

The new automated manual trannies use a computer to make all the many and different decisions regarding how and when to shift...without using the clutch.  They usually never make mistakes...usually.  I always use the clutch, but that is how I was trained.

HB of CJ (old coot)  Just another correct point of view.  I have had to fire hot dog drivers  who abused the equipment...including NOT using the clutch.  Had to be done.  Hard.

[TomC]

The original Autoshift with clutch pedal-you used the clutch pedal to start and stop. The Autoselect (for use with a mechanical engine), you had to break the torque on the transmission with the gas pedal. Then came the first Ultrashift with a centrifugal clutch that still used the engine up and down to break the torque in the transmission.
Now with the ZF Freedom, Detroit/Mercedes DT12, , Volvo I-Shift, Ultrashift Plus 10, 11, 13, 18spd, they all use an electronically controlled clutch that activates on every shift to speed up the shifts.

When I changed my 13spd in my truck to the Allison HT740, I had nearly 1.2 million miles on the original clutch. Any of the Eaton Roadranger transmissions are made to be shifted without the clutch-if you time it correctly. Good Luck, TomC

[HB of CJ]

Years ago I had my first ride in a Crown Supercoach school bus equipped with the infamous RTO910 Fuller Roadranger on a junior college geology field trip from Bakersfield High School to the lava fields at Little Lake CA. along route 395.

Kern High School District bus #23.  Had a 220 Cummings and a Jake Brake.  The bus driver borrowed from the high school district was a master at shifting the 10 speed.  Absolutely smooth.  No head rocking.  None.  He seemed to shift all the time.

I moved up forward to the seat across from him just to watch him drive and shift that new-to-me transmission.  Had heard of the Roadranger, but never yet had seen one.  This was about in 1968 so they had been around for awhile.  Interesting.

Anyhow, he gladly told me while driving that the tranny had very close gears and was a dream to shift requiring very little effort and movement of the shifter.  He also used the clutch every time and double clutched down shifting.  The schoolie seemed quite fast.

HB of CJ (old coot)  The Stewart Warner mechanical tack never seemed to leave 1750-2000 rpm.