Been driving semi for about a year now and was thinking back to trucking school and how they teach double clutching. It never really struck in my mind till i started hauling grain and fruit out here in washington.
On some of the steep hills out here in the country the hills can be 14% to 18% and a lot of the time i have to do a hill start on these steep hills and the only way to get through the gears is to shift at 1000rpm in low range and slip it into the next gear within half a second.
I was thinking back to cdl school and there is no way in hell you would be able to double clutch those shifts cause within a second you've lost all your speed. Why do cdl school not teach this situation and does the guide book recommend people to double clutch on a steep hill when you take off from a stop?
The only way i think its possible is to float it. So if a cdl school were to teach this and it hypothetically was on a test then how would they want you to shift? Cause according to what they preach, floating is prohibited even in real life situations lmao
Why do trucking schools not teach this to new drivers?
Discussion in 'Trucking Schools and CDL Training Forum' started by Reaper'sTrucking, Oct 26, 2020.
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Because cal testers require it. Any one can float
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That's the way I was trained to shift at 1,000 RPMs or less. Because you don't have match the gears and you can basically slip the gears and nobody will know if your being tested. It also makes for smooth shifts in low rang. I don't remember but I think they said on hills from a stop shift at like 1,200 RPMs. I was told the 1,000 RPMs or less for regular traffic lights and stuff.
Trucker61016 Thanks this. -
2 cylinder jake switch will bring the revs down nice & quick. That way you can rope it out some & not have to lug ever gear down there around 1k rpm when trying to gain road speed on steep grades..
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Most schools teach you enough to get your CDL. You get your experience on the job and adapt your skills to whatever is needed to do the job.
Badmon, douxdispatching, nredfor88 and 4 others Thank this. -
...i dont even know how to double clutch ...my combination vehicle cdl i got first with pick up truck and hydraulic brakes trailer , 6 months later i showed up to retest and have my air brakes endorsement and examiner was cool enough not to care about double clutch but overall how i handled the truck .
What surprised me most - most of the examiners dont have CDL ! I was chatting with the guy during my test and asked him whats gonna happen if someone will be stressed and not be able to shift or something - call the towing was the answerdouxdispatching, Lisa9, Trucker61016 and 1 other person Thank this. -
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