Going down long steep "DOWNGRADE"

Most don't know or have a chock block !!!!!

 

Again product of people being "trained" by people who don't have a clue.

 

rerun is correct, "snub braking" is also refered to as "stab braking". It should be in your CDL test manual and can be a question on the test.

The idea behind it is to give your brakes a temporary cool down period in between brakes. Compared to steady braking which would over heat the shoes and drums causing brake fade and a possible fire.

If by chance you are at the bottom of the hill and you smoked em, keep on driving without braking. The wind will help cool them down. You stop and the heat radiates towards the tire and a possible fire might start. There's a term for it that I forgot but tires start a chemical reaction at a certain temperature and once at that point the tire gets hotter and hotter by itself. That's why they are good for starting bon fires!




.

 

snub and stab the same,

you sure ?

 

This is how we were trained for the hills from my other thread:

"We drove 50 miles to Black Mountain which is 2800' high with a 6% grade that takes 6 miles to get to the top...We each took turns running up the mountain shifting up and down the whole time, either single up or single or doubling down, everyone performed PERFECTLY!...Then came the downhill which is 35mph and we were driving a 75000lb truck so it was VERY easy to exceed that...We were taught how to double down(or just one gear) and again, everyone performed PERFECTLY!...It was a true confidence builder knowing you CAN shift while going downhill with NO problems and with little to no concern of burning up your brakes, they weren't even warm when we checked them after each run...That may be old news to some, but to a newbie, it was eye-opening and a major confidence booster after being told in school it was such a no-no..."

How we do it:
IF speed builds up, hammer break until you get to 900rpms, push in clutch, raise rpms to 1600 and double down from 8th(or 7th)...No wearing or excessive heating of breaks and slowed down under control...

 

No.

Snub and 'controlled' braking are the same.

Stab braking is for emergency stops, and involves stepping hard on the brakes until they lock. Then you let off some to regain traction and do it again.

Stab braking should not be used with anti-lock brakes, because the ABS does essentially the same thing.

 

flash point....???

 

While for the most part this is true, it is better to start off in a lower gear and if need be grab one on the way down instead of downshifting part of the way down. Knowing your equipment is also essential. If you are heading down a hill and your truck has a limiter on it, and your brakes are fading, then its gonna be a bigger problem downshifting.

Its good they had you loaded going down instead of mty. You can really notice the difference and you will be more/better prepared for when you hit the big road