Coast Resorts Open Roads Forum: Tow Vehicles: Diesel vs gas......................
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 > Diesel vs gas......................

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Hannibal

Tampa Bay Area

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Posted: 07/12/12 05:03am Link  |  Quote  |  Print  |  Notify Moderator

transamz9 wrote:

I'm telling you HP ain't everything.


I'm afraid it is. Torque is a static measurement. RPM is a measure of speed but isn't an indication of force. Torque means nothing without rpm in our application. RPM without torque also means nothing in our application. The two together are known as horsepower, the measurement that determines how fast we go from point A to point B. There's no getting around it. Horsepower is it.


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transamz9

Lawrenceburg Ky

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Posted: 07/12/12 08:42am Link  |  Quote  |  Print  |  Notify Moderator

Hannibal wrote:

transamz9 wrote:

I'm telling you HP ain't everything.


I'm afraid it is. Torque is a static measurement. RPM is a measure of speed but isn't an indication of force. Torque means nothing without rpm in our application. RPM without torque also means nothing in our application. The two together are known as horsepower, the measurement that determines how fast we go from point A to point B. There's no getting around it. Horsepower is it.


OK then tell me where I can meet you and I will bring my 365 HP diesel and a trailer loaded to 60,000# and we will see how your gaser does. Yes I said 365 hp and somewhere around 1,800 lbft of torque. The truck will already weigh about 15,000 empty so that should give you an added advantage. We are talking about holding speed on a 6-12% grade for let's say 3 miles right? Are you game???


2016 Ram 3500 Mega Cab Limited/2013 Ram 3500 SRW Cummins(sold)/2005 RAM 2500 Cummins/2011 Sandpiper 345 RET (sold) 2015 Sanibel 3601/2008 Nitro Z9 Mercury 250 PRO XS the best motor made.

Hannibal

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Posted: 07/12/12 09:21am Link  |  Quote  |  Print  |  Notify Moderator

Ah yes transmaz. That's what I live for. I'm going to run my 310 peak hp pickup truck up a grade with 60k lbs in the bed. Soon as I finish my beer I'll head that way... If 365hp will move 60k lbs up a 12% grade at 60mph, then that's what it takes, 365hp. Good luck with that.

rcpd34

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Posted: 07/12/12 09:24am Link  |  Quote  |  Print  |  Notify Moderator

Quote:

The truck will already weigh about 15,000 empty


Your pickup truck weighs 15K lbs??


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transamz9

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Posted: 07/12/12 11:21am Link  |  Quote  |  Print  |  Notify Moderator

rcpd34 wrote:

Quote:

The truck will already weigh about 15,000 empty


Your pickup truck weighs 15K lbs??


I didn't say it was a pick-up.[emoticon]

transamz9

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Posted: 07/12/12 11:26am Link  |  Quote  |  Print  |  Notify Moderator

Hannibal wrote:

Ah yes transmaz. That's what I live for. I'm going to run my 310 peak hp pickup truck up a grade with 60k lbs in the bed. Soon as I finish my beer I'll head that way... If 365hp will move 60k lbs up a 12% grade at 60mph, then that's what it takes, 365hp. Good luck with that.


OK then I will bring my 5er (right at 14,000#) and we will use that. You build your gasser to 365 HP and if you can run with me up a 12% grade for 3 miles, I will pay for your mods. 365 hp against 365 hp. You game now?

transamz9

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Posted: 07/12/12 11:38am Link  |  Quote  |  Print  |  Notify Moderator

We need to make this as even as possible though. We will have to put something on your truck to make it 10'tall to get the same wind Resistance. Add 10 forty-one inch tall tires to it to get the same rolling resistance. Starting to sound like you are going to need a little more torque to get this trailer going and then maintain the speed huh? Remember, I am doing this with a truck that only has 365 hp.

The Mad Norsky

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Posted: 07/12/12 03:52pm Link  |  Quote  |  Print  |  Notify Moderator

transamz9 wrote:

I'm telling you HP ain't everything.


Afraid I have to agree with transamz9 here.

Its not just horsepower. I would think gearing and transmission are really huge factors in how a vehicle pulls also.

I do believe Hannibal once mentioned he also had owned almost the same truck as I owned, a middle 90's Dodge Ram Cummins with 3:55 gearing.

There was a prime example of gearing not helping towing. Mine would have been a much better truck with 3:73's or even a 4:10 gearing in lieu of the 3:55's it came with. It got outstanding fuel mileage, but was a poor puller.


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Hannibal

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Posted: 07/12/12 04:31pm Link  |  Quote  |  Print  |  Notify Moderator

The tire diameter was shorter on the mid 90's Dodge Cummins so the effective ratio would be similar to the newer ones with 3.73. The problem was not enough horsepower. even my '03 with 460 ft/lbs of torque was slower on the uphills than my '05 Hemi powered Ram with 365 ft/lbs of torque. The Hemi had almost 100 more hp.
On the uphills the Hemi could run in 2nd gear to multiply it's torque by 1.67 where the SO Cummins had to run in direct. 365 X 1.67 = 609 ft/lbs of torque at the drive shaft. The Cummins in direct was pushing it's 460 ft/lbs. Higher horsepower will always equate to more torque at the drive shaft.
transamz, why not just go read Pickuptruck.com's HD shootout? I have a job and family. Far past the age of going out playing drag race up the mountain with my pickup truck. Fact is, we tow everywhere we want to go with my gasser. The hew HO gassers and diesels both will out tow my 5.4L and my Hemi before it. I've owned several diesels. If the benefits were there, I would simply own another one. It's a pickup truck, not a miracle. I think you're making way more out of it than it is.
Here's some reading material for you from the masters of diesel engines. It's horsepower.
http://www.catrvclub.org/PDF_Docs/Understanding_Perf.pdf

64thunderbolt

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Posted: 07/12/12 05:42pm Link  |  Quote  |  Print  |  Notify Moderator

jarlaxle,A Super Duty with the 30-valve V10 & 5R110 trans will pull away from you on that grade. 365HP trumps 275HP...simple as that.

If you are speaking to me, who said I was making 275?? I think you underestimate the mods on my truck. I would welcome the race up that pull. Give me a call when ever you get to Az and I'll let you pull my trailer up and we'll see. That V10 would be very lucky to maintain 50mph on 17 miles of 6% with my trailer. being from NE you probably have never seen a grade that long.

I just noticed your sig. You have a school bus and you're arguing about what pulls best??

Hannibal, is this guy on your team????


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