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 > What kind of RPM's do you get? What about MPG?

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ken56

Tennessee

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Posted: 02/09/20 06:11am Link  |  Quote  |  Print  |  Notify Moderator

Biggest factor in towing is wind resistance AKA drag. The faster you go the higher the resistance the less gas mileage. I drive at 65 MPH normallly and I have a 2500HD GMC and tow a 10K travel trailer and my normal flat ground rpm is 2200ish. Uphill grades I jump to 3700 and can hit 4800 depending on steepness and dealing with momentum stealers in traffic in which I've hit 5500 at times to make up for the loss of momentum. Normal MPG is 9.5 towing.

I take secondary roads mostly when I can and because of the lower speed and less drag and in spite of the stop and go I get 10 to 11 MPG. We prefer the slower pace and going through the small towns and making stops when we want over the Nascar drivers on the expressways and waiting for rest areas.

dodge guy

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Posted: 02/09/20 08:03am Link  |  Quote  |  Print  |  Notify Moderator

For a gasser and a moderate size trailer I would say your numbers are about right.


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ppine

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Posted: 02/09/20 08:58am Link  |  Quote  |  Print  |  Notify Moderator

If people with gas engines are towing at 1,900 rpms or 2,000 they are lugging their engines in my opinion.

The idea of 1,700 or 1,400 rpms makes even less sense if you want your engine to last.

* This post was edited 02/15/20 11:34am by ppine *

goducks10

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Posted: 02/09/20 10:01am Link  |  Quote  |  Print  |  Notify Moderator

Yes and Yes

BenK

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Posted: 02/09/20 03:02pm Link  |  Quote  |  Print  |  Notify Moderator

Most older small blocks...but newer small blocks not so...and big blocks can't, mass plays

My big block cruises & Tows at 1,400 RPM, which is at 100% rated torque,which is where max torque starts and stay flat till about 3,200 RPM



ppine wrote:

If people with gas engines are towing at 1,900 rpms or 2,000 they are lugging their engines in my opinion.



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ramyankee

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Posted: 02/11/20 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

With our recently traded in 5th wheel at approximately 10000# driving at 65mph, 2200rpm I can nurse roughly 8 mpg. This new 5th wheel will be probably 500-800# less so our mileage should jump up a lot??????.


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Boomerweps

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Posted: 02/14/20 10:52am Link  |  Quote  |  Print  |  Notify Moderator

Towing a 4K# TT with my V6 2008 Explorer, I averaged 9.5 MPG trying to maintain interstate speeds. Gain between one to two MPG on the back roads from less wind resistance.
Towing same trailer with my V8 2019 F150, I gained about one full MPG.
Both have factory tow packages.
From my earlier research on the RV forums, 9-9.5 MPH is most common with gas engines if towing around 80% of your tow rating.
RPMs? I do what I have to do with the TV engine to maintain headway and speeds.


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deltabravo

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Posted: 02/14/20 07:45pm Link  |  Quote  |  Print  |  Notify Moderator

crasster wrote:

Just curious what others out there are getting as I look at TT options.

I've heard that 2400RPM and 7.5MPG is pretty standard. Is it wrong?


MPG and RPM is totally dependent on:
Which truck
Which gear Ratio said truck has
Which engine said truck has
Which transmission said truck has
How heavy the trailer is.

There are far too many variables at play to give an an answer.

My Duramax with the 6 speed Ally, I typically am at 1700-1900 RPM.
12 mpg.


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Airstreamer67

Pineville, LA USA

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Posted: 02/15/20 03:05pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 1996 F250 diesel with an automatic and 3.55 differential.

At 60mph in overdrive on the flats, I'm at 1500 rpm and can usually depend on 14mpg towing a 27 foot Jayco travel trailer. Things change a bit when geared down in the big hills and on mountain grades.

wanderingbob

monticeeo, fla

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Posted: 02/21/20 07:43am Link  |  Quote  |  Print  |  Notify Moderator

Kinda a goofy question ! What kind of truck ? What engine ? What trailer ? What terrain ? Highway Speeds ? Night or day ?

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