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Cummins12V98

on the road

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Posted: 07/03/19 08:50am Link  |  Quote  |  Print  |  Notify Moderator

ksss wrote:

RCMAN46 wrote:

Cummins12V98 wrote:



Let’s not forget 700# lighter and 50% less tire drag.


I would like to see the math you used to calculate the tire drag.


Especially without having the drag coefficient of the asphalt. At least I assume he hasn't run a drag box across the Ike. But maybe...


FYI comprehension of what you have read is important. Dually has 6 tires and SRW has 4 that is 50% less "tire drag". We good now?


2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

Cummins12V98

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Posted: 07/03/19 08:54am Link  |  Quote  |  Print  |  Notify Moderator

4x4ord wrote:

Huntindog wrote:

The video had a cutaway frame showing this.
It looked to me to be pretty close to 2".

Definantly NOT 5"


It could very well be that the hitch is only mounted 2 inches behind the rear axle..... in which case 3000 lbs placed on the hitch would take 38 lbs off the front axle. (On a CC short box)


As I mentioned on the other thread I will bet the centerline of ball is MORE than 2". That would make 100#. What is the distance in inches from axle to axle?

Cummins12V98

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Posted: 07/03/19 08:58am Link  |  Quote  |  Print  |  Notify Moderator

Shiner you just want to argue. My last DRW was 68RFE. It shifted good because right out of the box I ran the hell out of it and always used TH/EB. It certainly did NOT shift any better than the AISIN.

But hey what do I know since I HAVE owned BOTH.

Dadoffourgirls

China, MI USA

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Posted: 07/03/19 09:06am Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

ksss wrote:

RCMAN46 wrote:

Cummins12V98 wrote:



Let’s not forget 700# lighter and 50% less tire drag.


I would like to see the math you used to calculate the tire drag.


Especially without having the drag coefficient of the asphalt. At least I assume he hasn't run a drag box across the Ike. But maybe...


FYI comprehension of what you have read is important. Dually has 6 tires and SRW has 4 that is 50% less "tire drag". We good now?


When I went to school, 50% of 6 was 3. 33.3% of 6 is 4.


Dad of Four Girls
Wife
Employee of GM, all opinions are my own!
2014 Express 3500 (Code named "BIG ED" by daughters)
previous 2011 Silverado 2500HD CC (6.0, 3.73)
prior 2001 Yukon XL (8.1L, 4.10)
2011 Jayco Jayflight G2 32BHDS
previous - 2002 Dutchmen 31BH4DSL

ShinerBock

SATX

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Posted: 07/03/19 09:23am Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

Shiner you just want to argue. My last DRW was 68RFE. It shifted good because right out of the box I ran the hell out of it and always used TH/EB. It certainly did NOT shift any better than the AISIN.

But hey what do I know since I HAVE owned BOTH.


And you like to constantly go out of your way to complain about Allison transmissions(which is why I started about the Aisin) that you never owned either so what is the difference? Don't start no **** and their won't be no ****.

Although, I have driven plenty of Aisin company trucks at work for many miles to know that they the DO NOT shift as smooth or as quickly as the 68RFE, Allison, or 6R140.

RCMAN46

NorthWest

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Posted: 07/03/19 10:26am Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

ksss wrote:

RCMAN46 wrote:

Cummins12V98 wrote:



Let’s not forget 700# lighter and 50% less tire drag.


I would like to see the math you used to calculate the tire drag.


Especially without having the drag coefficient of the asphalt. At least I assume he hasn't run a drag box across the Ike. But maybe...


FYI comprehension of what you have read is important. Dually has 6 tires and SRW has 4 that is 50% less "tire drag". We good now?


By some miracle the Chevrolet is a unicycle. The Ram system is 10 tires being drug down the road. 50% of that is 5. 4 tires for the trailer only leaves 1 tire for the Chevrolet.

With 10 tires for the Ram and 8 for the Chevrolet I would calculate this as only 20% less drag from the tires.

If you look at all of the things that are dragging the rotation friction from the wheels and tires is very small and can basically be ignored. Wind resistance is the major item another is friction in the engine. And as you have pointed out many times the v8 has 33% more moving parts than the inline 6.

mich800

Pontiac, MI

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Posted: 07/03/19 11:02am Link  |  Quote  |  Print  |  Notify Moderator

Dadoffourgirls wrote:

Cummins12V98 wrote:

ksss wrote:

RCMAN46 wrote:

Cummins12V98 wrote:



Let’s not forget 700# lighter and 50% less tire drag.


I would like to see the math you used to calculate the tire drag.


Especially without having the drag coefficient of the asphalt. At least I assume he hasn't run a drag box across the Ike. But maybe...


FYI comprehension of what you have read is important. Dually has 6 tires and SRW has 4 that is 50% less "tire drag". We good now?


When I went to school, 50% of 6 was 3. 33.3% of 6 is 4.


And that assumes a linear relationship to drag.

Bionic Man

Colorado

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Posted: 07/03/19 12:34pm Link  |  Quote  |  Print  |  Notify Moderator

Dadoffourgirls wrote:

Cummins12V98 wrote:

ksss wrote:

RCMAN46 wrote:

Cummins12V98 wrote:



Let’s not forget 700# lighter and 50% less tire drag.


I would like to see the math you used to calculate the tire drag.


Especially without having the drag coefficient of the asphalt. At least I assume he hasn't run a drag box across the Ike. But maybe...


FYI comprehension of what you have read is important. Dually has 6 tires and SRW has 4 that is 50% less "tire drag". We good now?


When I went to school, 50% of 6 was 3. 33.3% of 6 is 4.


Well, 6 is 50% more than 4. So I guess he meant that the RAM had 50% MORE drag than the Chevy, not the other way around. But I don't think that equates to a 50% increase in drag. Maybe I'm wrong.....


2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010

Grit dog

Black Diamond, WA

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Posted: 07/03/19 01:51pm Link  |  Quote  |  Print  |  Notify Moderator

Derrrrrrrrrrrrrrrrrrr


03 Arctic Fox 860
07 Dodge 2500 deezul
"Obviously I don't want to overload my truck and be unsafe, but the reality is the truck is way more capable than the 10K GVWR they put on the sticker.
KJ"

Cummins12V98

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Posted: 07/03/19 02:10pm Link  |  Quote  |  Print  |  Notify Moderator

ShinerBock wrote:

Cummins12V98 wrote:

Shiner you just want to argue. My last DRW was 68RFE. It shifted good because right out of the box I ran the hell out of it and always used TH/EB. It certainly did NOT shift any better than the AISIN.

But hey what do I know since I HAVE owned BOTH.


And you like to constantly go out of your way to complain about Allison transmissions(which is why I started about the Aisin) that you never owned either so what is the difference? Don't start no **** and their won't be no ****.

Although, I have driven plenty of Aisin company trucks at work for many miles to know that they the DO NOT shift as smooth or as quickly as the 68RFE, Allison, or 6R140.


Too funny. Complaining??? Please show me. I have stated facts of why GM could not tow more than 24k. If that’s complaining so be it.

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