Ram Cummins Vs GM Duramax Ike Gauntlet

[ib516]

VIDEO

My summary:
- they both can tow 12.5k lbs anywhere, even in the toughest conditions, with ease.
- the Duramax exhaust brake works too good?
- the GM's hitch is heavily reinforced and you may need to rig up something for the safety chains to easily attach if you bumper tow.
- buy the one you like from a dealer you trust will look after you if there are ever any problems.

[spoon059]

ShinerBock wrote:
just like how happy I get depends on how much Crown is being applied to the Coke.

3 words... Jim Beam Vanilla...

You are welcome!

[ShinerBock]

Torque and rpm combine to make horsepower just like Crown and Coke combine to make me happy.

How much horsepower is being made depends on how much torque is being applied at a certain rpm just like how happy I get depends on how much Crown is being applied to the Coke.

Torque without rotational movement is useless just like Coke without Crown is useless.

You see, you can't have one without the other.

Now go practice explaining it to yourself using Crown and Coke as an example and it will all start making sense after about the third or fourth try. At least it did for me. :B

[transamz9]

4x4ord wrote:

travelnutz wrote:
As a nearly 40 year automotive engineer and automotive engineering operation owner, I sure as hell do know what I'm talking about! Taught many classes and you'd be wise to attend such! Torque and only torque is what and the force that turns the wheels to make the vehicle move at all or to any desired velocity and keeps it at that velocity also. Especially apparent on an uphill grade where torque does it all, all the time. Simple, as if you do NOT have adequate torque to maintain a desired velocity, the vehicle will drop in velocity.

Theoretical horsepower turns NO vehicle wheels nor does it apply one ounce of force to turn any wheel as horsepower is only theoretical calculation value. Torque is the only axle/wheel twisting force ever present! NO work is accomplished or done at all if there isn't adequate torque to make the wheels turn to any velocity. Try to deny this known well long time established FACT!!!

You've got your units confused. Asking how much torque is required to move a 20,000 lb truck up a 7% grade at 60 mph is like asking how may feet of gasoline it takes to fill your fuel tank.

Hp is a number used to tell you how much torque you need to produce at a rpm to achieve that speed. I think you guys are saying the same thing just have a different way of looking at the equation. How fast can you accelerate to 60mph up a 7% grade with 12.5k with 300hp? To answer the question you have to know how much torque you can apply through the RPM range. HP will just tell you the max speed it will achieve. If you don't have the ability to apply the torque needed to get the load to that max speed then max hp is useless.

[transamz9]

Turtle n Peeps wrote:
So a 1000 ft/lb engine at 525 RPM will be towing beast? LOL

It would be if if it had a flat torque curve and maxed out at 3,000 rpm.

[4x4ord]

travelnutz wrote:
As a nearly 40 year automotive engineer and automotive engineering operation owner, I sure as hell do know what I'm talking about! Taught many classes and you'd be wise to attend such! Torque and only torque is what and the force that turns the wheels to make the vehicle move at all or to any desired velocity and keeps it at that velocity also. Especially apparent on an uphill grade where torque does it all, all the time. Simple, as if you do NOT have adequate torque to maintain a desired velocity, the vehicle will drop in velocity.

Theoretical horsepower turns NO vehicle wheels nor does it apply one ounce of force to turn any wheel as horsepower is only theoretical calculation value. Torque is the only axle/wheel twisting force ever present! NO work is accomplished or done at all if there isn't adequate torque to make the wheels turn to any velocity. Try to deny this known well long time established FACT!!!

You've got your units confused. Asking how much torque is required to move a 20,000 lb truck up a 7% grade at 60 mph is like asking how may feet of gasoline it takes to fill your fuel tank.

[ktmrfs]

ShinerBock wrote:

Turtle n Peeps wrote:
So a 1000 ft/lb engine at 525 RPM will be towing beast? LOL

Man, that thing would fly up the Ike towing 12.5k lbs.......

Is what I would say if I were Amish.

well, in the extreme how about the sultzer 2 stroke marine engine. something over 5 million ft/lbs of torque at around 100 rpm.

oh, that translates to something over 100,000 hp

the most thermally efficient internal combustion engine in the world. very close to the theoretical thermal efficiency of a compression combustion engine.

now each piston weights 5 tons, and it uses 250tons of fuel/day at full power. each cylinder takes 6 ounces of fuel on each stroke at full power. displacement is 1800 litres per cylinder. 36inch bore, 8ft stroke.

[Groover]

4x4ord wrote:

travelnutz wrote:
4x4ord,

"Oops. You're right. At 7% grade the trucks would need to be making some power to hold 60.....likely about 300 rear wheel horsepower would be required."

Might I remind you that horsepower is only a theoretical calculated value and not a measurable value? The REAL and only actual value/values are how much TORQUE (measured twisting force) at the rear drive wheel/wheels is required to propel the vehicle rig to 60 MPH velocity up a 7% grade! Horsepower is meaningless as it's only a calculated theoretical value by using the only 2 measured and measurable values known! Engineering and Physics 101! Think about it!

You have no idea what you're talking about.

X2

[hone_eagle]

How about 1650ft/lb @ 1400 rpm? ......... in 12th

[ShinerBock]

Turtle n Peeps wrote:
So a 1000 ft/lb engine at 525 RPM will be towing beast? LOL

Man, that thing would fly up the Ike towing 12.5k lbs.......

Is what I would say if I were Amish.

[Turtle_n_Peeps]

So a 1000 ft/lb engine at 525 RPM will be towing beast? LOL

[travelnutz]

As a nearly 40 year automotive engineer and automotive engineering operation owner, I sure as hell do know what I'm talking about! Taught many classes and you'd be wise to attend such! Torque and only torque is what and the force that turns the wheels to make the vehicle move at all or to any desired velocity and keeps it at that velocity also. Especially apparent on an uphill grade where torque does it all, all the time. Simple, as if you do NOT have adequate torque to maintain a desired velocity, the vehicle will drop in velocity.

Theoretical horsepower turns NO vehicle wheels nor does it apply one ounce of force to turn any wheel as horsepower is only theoretical calculation value. Torque is the only axle/wheel twisting force ever present! NO work is accomplished or done at all if there isn't adequate torque to make the wheels turn to any velocity. Try to deny this known well long time established FACT!!!

[4x4ord]

travelnutz wrote:
4x4ord,

"Oops. You're right. At 7% grade the trucks would need to be making some power to hold 60.....likely about 300 rear wheel horsepower would be required."

Might I remind you that horsepower is only a theoretical calculated value and not a measurable value? The REAL and only actual value/values are how much TORQUE (measured twisting force) at the rear drive wheel/wheels is required to propel the vehicle rig to 60 MPH velocity up a 7% grade! Horsepower is meaningless as it's only a calculated theoretical value by using the only 2 measured and measurable values known! Engineering and Physics 101! Think about it!

You have no idea what you're talking about.

[ShinerBock]

Torque without movement in just applied torque and is meaningless. Torque with movement is work. We talk in terms of horsepower because it is an expression of the rate or speed at which work(torque + movement) is performed.

These terms all get convoluted when talking about engine and vehicle dynamics that even I get mixed up sometimes. Many times I incorrectly use the word torque in the place of work, but either way horsepower is how fast the work can be performed which is why we use it when talking about the speed of a vehicle performing work.

[travelnutz]

4x4ord,

"Oops. You're right. At 7% grade the trucks would need to be making some power to hold 60.....likely about 300 rear wheel horsepower would be required."

Might I remind you that horsepower is only a theoretical calculated value and not a measurable value? The REAL and only actual value/values are how much TORQUE (measured twisting force) at the rear drive wheel/wheels is required to propel the vehicle rig to 60 MPH velocity up a 7% grade! Horsepower is meaningless as it's only a calculated theoretical value by using the only 2 measured and measurable values known! Engineering and Physics 101! Think about it!

[ksss]

I go up an down a lot of mnt passes. Just today two of them 7-8K feet 8 miles at 6-7 percent grade. I weighed 32K combined with a 2018 3500 Duramax. I do not have the issue with the engine brake that they seemed to have. It is amazing to me how effective it is. I liked my '15 but the '18 is an even better towing platform.