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You say that, but have no problems using the pickup truck.com article where they used 4.3 gears and 3/4 ton truck v10 losing by 5 seconds to a psd wit 3.73 gears and drw 1ton as evidence the v10 pulls harder.
So why is gearing different than transmission?
The trucks in the situation are a 2V V10 with a 3.73 rear axle/4R100, and a 6.0L with a 3.73/5R110.
Trans ratios:
4R100:
1st-2.71
2nd-1.54
3rd-1.00
4th-.71
So-you've got 2 trucks there with the same axle ratio and comparable stock hp, but the 4R100 equipped truck is handicapped by starting off in a gear that's roughly the equivalent of 2nd gear for the 6.0L.
As for the pickups.com test-nobody here has said that it was a flawless example-but it's the most accurate testing done. Much more so than that crap from diesel power magazine or whomever that was. The V10 truck was equipped with the highest numerical gearset offered, and SO WAS THE DIESEL.
JL
That's the point, you can make up numbers and gear ratio's that have nothing to do with real life and it proves NOTHING. in an attempt to prove that the V10 will out pull a semi tractor trailer engine someone made up some gear ratio's that give a mathematical advantage to a higher rpm engine. But reality is much different.
And you will find it is more efficient in it's torque range too. will it get better fuel economy at 3500rpm or 4700rpm? and yes it's a rhetorical question.
In what gear? If I downshift to get to 4700RPM, the actual torque to the ground will be higher than it is at 3500, even though the engine's actual torque output is lower. See, that's what kills me about "reality". If you want to discuss reality, and start throwing RPM numbers out there, you also have to talk about which gear you're in.
Originally Posted by monsterbaby
You are wrong. HP is NOT measurable it IS calculated based on other measurable quantities.
Another fallacy. It IS measurable. You measure HP by recording torque and RPM and plugging it into a formula. That's like saying your ground speed is not measurable because you have to measure distance and time and use math to get MPH.
Originally Posted by Scratcher
Ah................ well for that you need one of these. Both the PSD and the V10 will sink
I was using a metaphor to describe what happens when the PSD needs servicing
Another fallacy. It IS measurable. You measure HP by recording torque and RPM and plugging it into a formula. That's like saying your ground speed is not measurable because you have to measure distance and time and use math to get MPH.
I'm not sure how to describe it. I think of measurable as being able to take mechanical guage and SEE the reading. I can see RPM, I can see torque on a strain guage. I've never seen a mechanical gauge that says horsepower on it. (lets qualify this, for a internal combustion engine, I HAVE seen one for an electric motor before)
I'm not sure how to describe it. I think of measurable as being able to take mechanical guage and SEE the reading. I can see RPM, I can see torque on a strain guage. I've never seen a mechanical gauge that says horsepower on it. (lets qualify this, for a internal combustion engine, I HAVE seen one for an electric motor before)
I understand what Rob is saying, but it's still incorrect. HP is measurable.
By observing a torque over a certain period of time. HP can be measured by a "mechanical gauge", if you care to make one. As a matter of fact, a chassis dyno is a perfect example. It measures the acceleration of a fixed-weight drum. That acceleration is directly correlated to HP, and then torque is computed based on engine RPM. The HP is being measured, the torque is computed.
I can envision a purely mechanical method of measuring HP using both the speed of the shaft, and the amount of torque at the same time. If I use an electronic torque wrench, does that mean it's not "measuring" torque? Does the LCD readout let me "see" the torque reading as you say above?
I understand what Rob is saying, but it's still incorrect. HP is measurable.
By observing a torque over a certain period of time. HP can be measured by a "mechanical gauge", if you care to make one. As a matter of fact, a chassis dyno is a perfect example. It measures the acceleration of a fixed-weight drum. That acceleration is directly correlated to HP, and then torque is computed based on engine RPM. The HP is being measured, the torque is computed.
I can envision a purely mechanical method of measuring HP using both the speed of the shaft, and the amount of torque at the same time. If I use an electronic torque wrench, does that mean it's not "measuring" torque? Does the LCD readout let me "see" the torque reading as you say above?
You are expending a lot of energy to split hairs... I am by no means an expert on this but I am pretty sure the gist is, torque is measured and HP is calculated off that measurement. Sure you can call is measured too, that is great. But the fact is, torque is measured and HP is derived off of that. Is that not a fact?
Besides, it still comes out to where the diesel that has a 12 hp disadvantage and 200 torque advantage is going to be able to outpull the v10.
We need to get a 3v v10 and a 6.4 together. Comeone, anyone able to get this going?
I have owned a 2001 F-350 with the V-10 and a 2005 F-350 with a V-10. My 2009 F-350 with the stock 6.4 PSD will out pull any stock V-10 on the road. I also plow snow with my truck and the PSD pushes double the snow my V-10s did.
Either truck will sit and spin all 4 wheels pushing a plow, so how does the 6.4 push 2X as much? I can see a little more with the extra 500 lbs giving it more traction, but not double.
I have owned a 2001 F-350 with the V-10 and a 2005 F-350 with a V-10. My 2009 F-350 with the stock 6.4 PSD will out pull any stock V-10 on the road. I also plow snow with my truck and the PSD pushes double the snow my V-10s did.
There you go George, jump right into the fight on your first post. . I'm still waiting to see who will win this debate.
I bet you have plowed alot of snow down in Texas. My PSD pushes more snow when you pile up snow than the V-10. The PSD has more torque than the V-10. If you have any skill you won't be spinning your tires. I have been a Operating Engineer Heavy Equipment Operator for 22 years and I operate D8 Dozers, 973 Track Loaders every day so I know how to move material around. I have plowed with the V-10 and the PSD. Hands down the PSD pushes more.
There you go George, jump right into the fight on your first post. . I'm still waiting to see who will win this debate.
Welcome to FTE.
That's the problem with most of this thread. There is no "winning" this debate.
There are positions, opinions, and facts. But each person needs to make up their mind for themselves, and everyone else can just suck it up and stop berating others for their engine choice
I am not here to argue or fight with any one. I think we all can agree that we are driving the best trucks on the road no matter what engine they have. I am 40 years old and I have been driving ford trucks since I got my liscence at 16. I love my 2009 F-350 Lariet Crew Cab 4x4. It gets the job done every time, Hauling my self around, pulling a trailer or plowing snow. I am blessed to have my Ford Superduty.
That's the problem with most of this thread. There is no "winning" this debate.
There are positions, opinions, and facts. But each person needs to make up their mind for themselves, and everyone else can just suck it up and stop berating others for their engine choice