If ive got a real heavy load sometimes i have trouble shifting thru the low gears on a steep hill. For example if i exit, stop at the stop sign and turn left to go over a steep overpass. I generally start in 2nd (ive got a eaton fuller 10,cummins isx) and when i get to about 1500 or 1600 rpms i try to put it in the next gear and it just grinds until finally it slows down enough to put it in. If the hills real steep by the time i get it in i barely have enough rpms to accelerate. Do i need to wait until about 18 or 1900 rpms in this case or what? How embarassing that i have to ask this! But its better than feeling like im holding up traffic...
Trouble shifting on steep hill
Discussion in 'Questions From New Drivers' started by truckerdan90, Jun 3, 2013.
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The split between gears on a 10 spd is about 400 rpm. So shift at 1800 so you have extra time to get it into the next gear before 1200 rpm. The heavy load is slowing you faster than you are used to, so you have to get to higher rpms to make more time. You can run that engine at 2100 rpms and not hurt it in any way.
Jrdude5 Thanks this. -
Do what you gotta do to get that next gear ... if you need to pull those RPMs up a little more than normal due to the grade ... do it!
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I disagree with taking it to a higher rpm. Coming out of 2nd, your shift should be about 1350, and quick. Learn to float, with dbl-clutching everything is taking too much time.
If the climb is that steep, there is no reason to rush the shift. Use 2nd to just get you moving, quick into 3rd before the climb torque is required. Shifting into higher gears against high rpm's throws all the timing off for quick shifts.Bilbirk, blairandgretchen and 25(2)+2 Thank this. -
I guess everyone does it different. My solution to grabing gears loaded on a grade is double clutch it. Failure when floating in this situation could have a very bad outcome. If it is real steep or turning onto a grade where it starts to bind/tire squirm,ect. then jake shifting is an option. IMO.
otherhalftw, Tonythetruckerdude and blairandgretchen Thank this. -
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my first trucking boss gave me the best advice when it came to shifting on a hill and were grossing 100k lbs first off start in 1ST not second u need the torque just ease off the clutch slowly then shift her like u stole it speed is everything shifting through gears on a hill like said before bring her up to a higher RPM till u get used to shifting at a faster pace then when u get used to it then u can keep her right around the 14-1600 rpm range
also a shifter extender does help sliding her in to a gear i love mine i started out with 6in and now im up to the 18 the leverage helps when ur trying to speed shift imhoCriminey Jade and CenutryClass Thank this. -
NO WAY!!!!
We all learned the right way, the bestest way, the safest way....now you're trying to tell me there are those that have deviated from prescribed, government tested and proven ways?????
What is this world coming to????? -
What is jake shifting? I usually dont float for a couple reasons, although im trying to get better at it. Generall it wont let me pull it out of gear for some reason... i release fuel pedal at around 1500 but i cant get it out of gear...
I wish i understood some of this stuff better
It is normal to go pretty slow though in that situation right? Sometimes i will have trucks trying to crawl up me rear end
I guess i will have to play around with it. Actually too, part of the problem is that when i put it in the next gear and lay on the fuel pedal it can take several seconds ( i counted to 4 or 5 once when i was bobtail) before the engine actually picks up and accelerates...but i assume thats just the electronic crap in the motors these days. -
Practice makes perfect. As long as you don't roll backwards, or stall the engine, traffic behind you should be grateful.
blairandgretchen Thanks this.
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