2017 F-350 DRW 0-60 testing

lawnspecialties wrote:



When you think about it, we're getting close to dilithium crystals pushing the Enterprise past the speed of light.

It's impressive, but let's not get too carried away. LOL!

I'm having a hard time believing the new Duramax is that slow. I could've almost sworn that my brother's 2010 was faster than that.

Adam R wrote:

4x4ord wrote:



The typical diesel engine in a pickup is only around 35% efficient. I'm thinking there's all sorts of room for improvement. For instance nothing is presently being done to harness the heat energy in the cooling system. Think of all the energy lost going down hill and braking. More can be done to reduce areodynamic drag on the fifth wheel RV.

Not sure where you are getting that figure. 25 years ago when I did my mechanical engineering undergrad, diesels where in the low 40's....about where they are today. Yes, you can get them into the low 50's, but is usually in lower rpm engines, ships being an example.

30-35% is gasoline engine territory.

To extract meaningful work out of two temperature delta's you need them to be as far apart as possible. 200 degree air opposed to 70 degree ambient isn't enough to fool with for energy extraction. Regenerative braking is cool, but now you are carrying around a few hundred pounds in batteries everywhere you go and those, and the corresponding technology, adds cost to your vehicle. Those additional costs can buy a lot of diesel fuel to offset the marginal 5-10% gain you might achieve.

As I said above, it's all about compromises. If there was a breakthrough or disruptive technology, I think we would have already seen it by now.

Adam

I don't know the exact level of efficiency that a diesel engine might run at while pulling an RV down the road at 60mph. I'm sure it is not in the low 40's. 35% is likely too high. I could see a diesel truck engine running 40% efficient when working hard at a low rpm

blofgren wrote:
That's definitely impressive! The Ram will certainly be slower because the inline 6 will not build RPM's as quickly but I'll bet the Duramax gives it a run for it's money.

LOL, I wonder what happen with this inline 6 with your theory? Just an old 12 valve with mechanical injection. Seems to RPM pretty good too me? :B

When are people going to get over this whole inline V8 thing? Doesn't matter is the engine is an inline, V8, pancake; it doesn't matter what shape it's in. I like a lot of people can make HP with any shape. The shape just doesn't matter!


Since I'm on a roll a lot of people don't have a clue on how to make power with a diesel. It's like this: To make power with a diesel you need fuel. Lots and lots and lots of fuel. That fuel makes SMOKE! Lots and lots and lots of smoke. And no; smoke is not unburned fuel. If it was unburned fuel you would see liquid coming out of the pipe instead of smoke. Much like nitromethane, even though you see "partially burned fuel" coming out of the pipe it's still making power.

You get to a point where no matter how much air you add to the engine you will still have smoke. The truck above is a friend of mine's and he is putting 140+ LBS of boost into the engine. Even with all that air it's still pretty smoky.

And for all you nits out there that say you can make power without so much smoke. They don't do it by cutting down on the fuel. (Remember you need lots and lots and lots of fuel to make power) Yes; you diminish the smoke a bit by adding propane and nitrous oxide injection. This is a pretty impractical way of making power while towing an RV though! :B

Personally I like 0 to 60 times. It shows how much power is actually getting to the ground. Not some bogus number that manufactures write down on paper to look good. 0 to 60 is sort of like keeping fake news out of vehicles! :B

FishOnOne wrote:

CumminsDriver wrote:

FishOnOne wrote:

patriotgrunt wrote:
TFLtruck.com

Looks like they achieved 8.02 seconds at a mile above sea level. More videos to follow for the other brands. I can't wait to see if the Chevy is similar considering how close they are in power. These are some pretty remarkable trucks today.

I'm impressed how the massive torque lifts the front end up so much at launch. Very impressive power!

I'm not surprised that the Ford is quicker 0 to 60. The transmission gearing is noticeably lower in the first 4 gears than the other two brands. In a 0 to 60 race they haven't gotten out of 4th gear yet.

Rich

I pretty sure Ford is sandbagging there HP/Torque numbers like GM once did.

Didn't TLFtrucks say they were going to dyno test them? I hope they do. It'll be interesting to see how much power is making it to the rear wheels.

4x4ord wrote:



The typical diesel engine in a pickup is only around 35% efficient. I'm thinking there's all sorts of room for improvement. For instance nothing is presently being done to harness the heat energy in the cooling system. Think of all the energy lost going down hill and braking. More can be done to reduce areodynamic drag on the fifth wheel RV.

Not sure where you are getting that figure. 25 years ago when I did my mechanical engineering undergrad, diesels where in the low 40's....about where they are today. Yes, you can get them into the low 50's, but is usually in lower rpm engines, ships being an example.

30-35% is gasoline engine territory.

To extract meaningful work out of two temperature delta's you need them to be as far apart as possible. 200 degree air opposed to 70 degree ambient isn't enough to fool with for energy extraction. Regenerative braking is cool, but now you are carrying around a few hundred pounds in batteries everywhere you go and those, and the corresponding technology, adds cost to your vehicle. Those additional costs can buy a lot of diesel fuel to offset the marginal 5-10% gain you might achieve.

As I said above, it's all about compromises. If there was a breakthrough or disruptive technology, I think we would have already seen it by now.

Adam

CumminsDriver wrote:

FishOnOne wrote:

patriotgrunt wrote:
TFLtruck.com

Looks like they achieved 8.02 seconds at a mile above sea level. More videos to follow for the other brands. I can't wait to see if the Chevy is similar considering how close they are in power. These are some pretty remarkable trucks today.

I'm impressed how the massive torque lifts the front end up so much at launch. Very impressive power!

I'm not surprised that the Ford is quicker 0 to 60. The transmission gearing is noticeably lower in the first 4 gears than the other two brands. In a 0 to 60 race they haven't gotten out of 4th gear yet.

Rich

I pretty sure Ford is sandbagging there HP/Torque numbers like GM once did.

FishOnOne wrote:

patriotgrunt wrote:
TFLtruck.com

Looks like they achieved 8.02 seconds at a mile above sea level. More videos to follow for the other brands. I can't wait to see if the Chevy is similar considering how close they are in power. These are some pretty remarkable trucks today.

I'm impressed how the massive torque lifts the front end up so much at launch. Very impressive power!

I'm not surprised that the Ford is quicker 0 to 60. The transmission gearing is noticeably lower in the first 4 gears than the other two brands. In a 0 to 60 race they haven't gotten out of 4th gear yet.

Rich

patriotgrunt wrote:
TFLtruck.com

Looks like they achieved 8.02 seconds at a mile above sea level. More videos to follow for the other brands. I can't wait to see if the Chevy is similar considering how close they are in power. These are some pretty remarkable trucks today.

I'm impressed how the massive torque lifts the front end up so much at launch. Very impressive power!

I'm a bit surprised but the new Duramax is slower than the current Power Stroke.

The Chevy made the 0-60 time at 8.74 seconds.

Ram is up next!

Link