Thats another reason why I wouldnt buy a fleet spec truck. Ever driven a big powered diesel with a monster jake? Hit the jake and get launched towards the windshield monster jake?
The jake on a 550-650+ HP truck is completely different than the one on a 430-470 HP fleet truck.
braking on big mountains...
Discussion in 'Experienced Truckers' Advice' started by elharrison, Feb 8, 2008.
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It's possible an engine's displacement has more to do with how 'strong' the engine brake is than it's HP rating. An example: I had the 12 Liter Volvo engine in my last 780, rated at 465hp, and the engine brake was a dog. My prior 780 had a 14 Liter Cummins in it, rated at 450hp and it had amazing engine braking. Those two extra Liters give you bigger pistons and bigger firing chambers pushing out larger volumes of air, hence creating greater resistance when the engine is retarded.
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snub braking is the correct answer on the California test.
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Last edited: Jun 17, 2009
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The schools teach snub braking because it is considered to be the safest method for descending mountains. I have found this to be true based on my personal experience over the past 17+ years.
According to your profile you have been driving 2 years. That is a good start but you're still a beginner.
Perhaps when you have reached your first million miles you will have enough real world experience to actually realize which method is more reliable. -
If your loaded at 121,000 and start down thru the gorge in Utah fan braking your going to overheat your brakes, guaranteed. Light steady pressure will down the trick. If our fan braking and they start to get hot, smoking do not stop just apply 3 to 5 lbs of pressure, just enough to keep the shoes touching the drums, continuing to fan brake smoking brakes will cause complete brake failure, also very well may catch them on fire. Braking is an important issue, if you don't know don't comment your going to kill somebody with your bad advice.primexample Thanks this. -
Maybe your school taught you that way.my school at Stevens transport taught me to not use snub braking, and to use the controlled braking method when no jake is available. and with a 10 speed 10 minus the % of the grade= the gear to descend the grade in,you can go 1 gear higher.but 2 is asking for it, and keep rpms around 2100, with light steady pressure all the way down.
After driving 16 months with no jake in all 48 states. and never smoked my brakes but once with my trainer which he said to stay in 6th gear instead of 4th, and they smokedafter going half way down grapvine northbound.than he reached over and flipped on the jake brake an it took over the rest of the way,but it was only to teach a lesson to be sure to stick with the formula to be in the correct gear, so i think this formula works pretty dam good,so i think i know what im talking about.Last edited: Jun 19, 2009
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