G56 Clutchless shifts?...

[BurlesonR]

Yeah, guess your right...

 

[S.Morris]

Last roadranger I had apart... 10 years ago(brother now runs shop)

Pacific Inland Powertrain..... here were No syncros

In front box of 13,15,18 speeds.

If you. Match speeds exactly ... . you are good.

On a syncrnized transmission you can tear up the syncros

Real quick

 

[meanmatt]

The funny thing is if you read the operators manual for any transmission it will state the clutch has to be used when shifting . If you have taken the cdl driving test you have to double clutch to pass the test . Yes I have seen them fail people for float shifting. Modern truck fleets are specing their trucks with an Eaton Solo self adjusting clutch now . So for the the clutch to self adjust you must use the clutch when shifting .

Personally I use the clutch, yes I can float shift any of the different trucks in my fleet . i would much rather be spending my days fixing a/c and other clean non back braking jobs . I recommend shifting with the clutch no mater what size the truck is.

 

[JWadford]

Last roadranger I had apart... 10 years ago(brother now runs shop)

Pacific Inland Powertrain..... here were No syncros

In front box of 13,15,18 speeds.

If you. Match speeds exactly ... . you are good.

On a syncrnized transmission you can tear up the syncros

Real quick

Google Image Result for http://www.roadranger.com/ecm/groups/public/@pub/@eaton/@roadranger/documents/content/98132707.jpg

 

[RVTRKN]

The funny thing is if you read the operators manual for any transmission it will state the clutch has to be used when shifting . If you have taken the cdl driving test you have to double clutch to pass the test . Yes I have seen them fail people for float shifting. Modern truck fleets are specing their trucks with an Eaton Solo self adjusting clutch now . So for the the clutch to self adjust you must use the clutch when shifting .

Personally I use the clutch, yes I can float shift any of the different trucks in my fleet . i would much rather be spending my days fixing a/c and other clean non back braking jobs . I recommend shifting with the clutch no mater what size the truck is.

You are correct, in fact the company I learned to drive with and DMV and Swift, all required it but not the guy who taught me, when I was with Swift, shifted clutchless.

 

[HBarlow]

i have rebuilt some big truck trannies, eaton road rangers 10-18 speeds, but not a g-56, the big truck trannies have huge gear teeth and a small truck trans has tiny teeth, the clutch breaks torque from the engine to drive train, if there is any torque when pulling out of gear it shears the edge of the teeth and if torque is present when going into gear it galls the edge of the teeth, and the synchros with the clutch engaged or not try to match shaft speeds to ease shifting, it can be done either way, just so much safer for the trans to break torque before taking out of gear or putting into gear, also when this grinding happens the sheared hard metal goes straight into the oil and then helps with premature wear on everything else.

I've been watching this thread knowing I wouldn't shift a light truck or car transmission w/o the clutch but not having a valid argument other than the possibility of damaging synchros or breaking a gear tooth.

I believe JWadford's post above is the authoritive information on this subject. I would follow his advice.