leversole Posted May 9, 2011 Share Posted May 9, 2011 Getting better and better at shifting...can cruise around no more than 1600 (crusing 35-45 on the back roads)shifting up and down with ease (no clutch)...Question is...how in the hell do people shift the main and compound when goin up hill from a start...no matter how fast I shift...by the time the RPM's fall to shift the main, the truck is almost stopped! The old hands must have been masters! Quote Link to comment https://www.bigmacktrucks.com/topic/19008-shifting-progress/ Share on other sites More sharing options...
Rob Posted May 9, 2011 Share Posted May 9, 2011 Getting better and better at shifting...can cruise around no more than 1600 (crusing 35-45 on the back roads)shifting up and down with ease (no clutch)...Question is...how in the hell do people shift the main and compound when goin up hill from a start...no matter how fast I shift...by the time the RPM's fall to shift the main, the truck is almost stopped! The old hands must have been masters!With a load sometimes you didn't. That is part of the reason trucks of the past were so slow as compared to today's. Practice makes perfect but sometimes it can't be done.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/19008-shifting-progress/#findComment-77533 Share on other sites More sharing options...
JStevens120 Posted May 9, 2011 Share Posted May 9, 2011 I haven't figured that out completely either, most of the time I just run the gear I'm in till I get to the top. No sense trying to tear it up. I have found that it is quite a bit smoother if I run about 1700-2000 until I get up to my cruise speed. I agree those guys that drove these things for a living had skills that will never be seen again. The new stuff is like driving a car. Quote Link to comment https://www.bigmacktrucks.com/topic/19008-shifting-progress/#findComment-77539 Share on other sites More sharing options...
mowerman Posted May 10, 2011 Share Posted May 10, 2011 the trick is to shift them both at the same time,if your uphill,its not an easy task ,,it takes practice,,im not that good at it either,i generally use the clutch...bob Quote Link to comment https://www.bigmacktrucks.com/topic/19008-shifting-progress/#findComment-77569 Share on other sites More sharing options...
vision386 Posted May 10, 2011 Share Posted May 10, 2011 Starting from a dead stop at the bottom of a hill with a two stick trans. is indeed difficult to master,but not impossible....trick i use is to start in a low enough gear to let you climb the hill,and usually you only need to make one progressive shift in the compound. Personally i do not use the clutch,especially when shifting only the auxillary trans. it does take practice,but when you get the hang of it,its like second nature. It's kind of hard to explain something like this without actually being there in person,but i hope this is of some help!...............Mark Quote Mack Truck literate. Computer illiterate. Link to comment https://www.bigmacktrucks.com/topic/19008-shifting-progress/#findComment-77583 Share on other sites More sharing options...
mowerman Posted May 10, 2011 Share Posted May 10, 2011 also,case you didnt know,those motors,ran a higher rpm.than they do now,1600 is starting to lug it, you need to cruise around 1800-1900...keep on praticing...bob Quote Link to comment https://www.bigmacktrucks.com/topic/19008-shifting-progress/#findComment-77588 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.