Exactly!! He is just burning, or shreading his brake by doin that, Iknow I"ve drove, and worked on to many of them to listen to that.
shifting uphill empty
Discussion in 'Experienced Truckers' Advice' started by stylicho, Mar 20, 2007.
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Every single person on this thread arguing about the clutch brake needs to figure out a little physics.
First of all, stopping the input shaft will make it HARDER to shift, because you have to match the speed of the input and output gears. A stopped input shaft will make the gears grind, nothing else.
If you use the clutch brake to shift and it works, you did NOT stop the input shaft. Period.
And ok. Check this out.
If the transmission is in neutral, the driveline past the shift forks is disconnected. Therefore the clutch brake is not slowing the truck down.
If the clutch is in, the input shaft is also disconnected from the engine.
You can infact stop the input shaft with the clutch brake while rolling. And it will not damage the clutch brake, either. However, it will cause you to grind gears, and it obviously will cause more wear on the clutch brake.
Also, I tried shifting with the clutch brake asd that poster suggested. It did not seem to slow the gears down any faster than normal double clutching. It's almost like theres a device in the transmission that prevents the clutch brake from activating at speed.
Also, I tried shifting with the jake brake on low, and it worked great. But i still say that it sounds stupid.
Also, the other day my drive tires broke loose going down an icy grade (without the engine brake, im not dumb!), and I slammed the clutch to the floor and held it there for atleast 2 minutes, and my clutch brake still works. That was during the big blizzard on I-78 in pencilvania (home of the pencil). When your drives break loose like that, it kind of makes you more concerned about keeping the truck under control than hurting the transmission.. FYI i didnt even lose my lane position. It wasnt a steep grade so i just went down in neutral with my foot on the footbrake.. -
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Last edited: Mar 1, 2010
Brickman Thanks this. -
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I've done this while improving my shifting skills, I've been far more conscious of how far down the clutch is since. -
I guess I am a bit confused. I taught myself how to shift and still to this day can NOT shift using the clutch. Upshift or downshift, going up hill or down hill, loaded or empty does not matter. I just assumed this was how everyone did it.
So using the clutch is harder? If so, not sure why anyone would even try pushing the pedal in, except to come to a stop and start. -
It does help you get it out of gear if you want to make extra sure it doesn't snag but you just kick it to pop it out and float it back in.
All you guys having problems shifting, empty or not, you're leaving it in each gear too long and revving the engine too high. The longer it's in gear and the higher the engine revs, the bigger the step down and more difficult it's going to be to hit the next gear.
My truck, loaded to 80k, on a hill or not, will take off and flat run without using more than half throttle. I just shift quick. I leave it in each gear for a second, maybe a bit more, then hit the next one, bam bam bam.
I'm sayin this because so many trucks try to race me off the lights and lose. Every one of them will be revving the engine way up in the low gears and it just kills their acceleration. They've got it screaming in 1st and I'm already in 3rd. It ain't a race car, it's a truck. You've got gobs of torque. Torque is all made at the low end, not the high end.heyns57 Thanks this. -
Mr. Outlaw organized a truck safety program, and with the help of North Carolina State College in Raleigh started North Carolina Truck Driver Training School in 1949. The school is the only one of its kind in continuous operation since it began, although it operates at several junior colleges now. When I completed the course in 1964, we had a classroom on the Raleigh campus and used the college cafeteria, but our driving was done off-campus.
Mr. Outlaw served as executive vice president of the North Carolina Trucking Association, was a member of American Trucking Associations, the President's Highway Safety Conference, the NC motor-truck transportation civil-defense committee, the NC Society of Safety Engineers, and the American Association of Motor Vehicle Administrators. He was also instrumental in the establishment of the monthly magazine, Tarheel Wheels to which I subscribed in the 1960s. -
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