Hauling a heavy load of concrete in a 1990 R-Model Mack truck with 350hp and a 12 speed. This will be my last video taken while driving for insurance purposes but not the last of my videos, many more
Such beautiful yet simple machines, hence why they were so durable...spent many miles in an R model 350 with a 12 spd hooked to a monster Steco three axle dump trailer grossing 120K here in NYC. Truck never broke down and pulled decently with 40 tons in the body in stop n go NYC traffic
Wow my 350 Mack barely pulls 20 tons of grocery. I agree these trucks are decently durable but you have to slam your thumb in the door to drive one as they say. I'm over Mack I've driven better freighshakers and even dare I say Intertrashionals
@ricochetey maybe get your Mack looked at. Those E6 350's pull good. Here in nyc we ran 60 tons gross with 350's from the 80's till even today, there's a few left on the road up here
the first truck I ever drove for Temple Inland was an '88 Mack,and they had a 2000 Mack I got to drive once in a while which was a pretty nice ride,(can't remember the model they were)...great video,can't wait to see the new truck.Stay safe & have a good one
I remember driving a '72 dm mack with 2 stick tranni had a small engine in it and when I was going up by rowe stone I was being passed by bigger HP tractor trailers
Matlack nice, small world I guess you could say. My grandfather drove an R model for Chemical Leaman, he said he used to see your company's rigs all the time.
The blue brake valve knob I think is for the reserve air tank . You usually only see that on old machines with belt driven compressors or some modern day buses still have them to be able to move in an emergency
my first rig ride ever was in one of these, I was 5yrs old in 1978.. cranston print works truck my dad was driving. cannot find the model, it was offset cab, and v8. these seem to be as custom as an old gmc. I see gurus riddling off models from a mile away.. and there is that short nosed offset cab r model with a locomotive thumping v8 stuck in my head for 40 something years. my dad and I still laugh about that one. little big mack...with a window in the back.
U600 were the offset cabs, if it had a V8 in it then the cab sat higher than the standard U model & was called a U700; I drove one for a couple years I always liked the look of them U models weren't around long, My Dad drove them for mobil oil out of New Haven Ct, The offswt cab was continued on in the construction fiels as DM or DMM;s for dumps & mixers.
Are you talking about the compound or main box? When down shifting any non synchro transmission you must raise the rpm, so crank speed and main shaft speed are the same. When you're up shifting you want to lower the rpm, that's why a lot of drivers use the engine brake when up shifting as to shift more quickly. I've had enough triple counter shaft and twin counter shaft transmission apart to understand what is going on.
Every truck is different. I used to drive a '97 RD, and that one needed high RPM's because the injection pump was tuned down for some reason, so I had to always have high RPM'S. It's sister truck had the exact same E6-350 under the hood. But the pump on it was turned up, and it flew like a jet (smoking the whole time). That one needed lower RPMs to shift.
MR.MUZIQ To shift between high and low gears. The truck is a 12 speed, and the shifter has 6 positions. Each position has a low gear and a high gear. So in position 1 you are in 1-low, then you flip the switch and you are in 1-high (or 2nd), then you change position and flick the switch in unison and you are in 2-low (or 3rd), then you flick the switch and you are in 2-high (or 4th), and so on, all the way through to 6-high (or 12th). Or in some trucks you can leave the switch where it is and skip the "half gears" if you wish. People normally skip gears when the truck is unladen or without a trailer, because the half-gears aren't really needed.
@@BlueXonar There are guys Who Like to Make Videos where they Shift EVERY Gear to Make it Look MORE Complex That What it Really Is. Thanks for Simply Explaining it.
@@BlueXonar uhh actually thats incorrect, theyre a 5 speed main with a low and direct split of each, then 1st can be put in double deep with lo and direct splits. Thereby 1st hole holds 4 ratios, 2 3 4 and 5 hold 2 splits each, totalling 12 gears. Double deep selector is on the dash and not on the stick
