SPLIT: Tow Vehicle & Trailer combos - COMMENTS - Fiberglass RV


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Old 03-06-2015, 08:13 AM   #1
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SPLIT: Tow Vehicle & Trailer combos - COMMENTS

Intersting statistics here, the variable appears to be the ratio of weight towing and size of motor in tow vehicles. Some of the smaller engines pulling trailers lose more than a third of their mpg percentage when towing while the bigger engines lose less percentage wise.
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Old 03-06-2015, 09:19 AM   #2
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Originally Posted by cpaharley2008 View Post
Intersting statistics here, the variable appears to be the ratio of weight towing and size of motor in tow vehicles. Some of the smaller engines pulling trailers lose more than a third of their mpg percentage when towing while the bigger engines lose less percentage wise.
For the ratio which seems to move very sometimes, he can have the habits there to drive which affect this ratio a lot...
But that gives us a good indication and to the future buyers.
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Old 03-06-2015, 09:49 AM   #3
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Intersting statistics here, the variable appears to be the ratio of weight towing and size of motor in tow vehicles. Some of the smaller engines pulling trailers lose more than a third of their mpg percentage when towing while the bigger engines lose less percentage wise.
Since "just the facts" has been abandoned, and I can no longer delete my previous post, I must take issue with the above statement.
It's driving habits, as much as engine size, which affects Towing MPG.
Hard acceleration and excessive speed are the most relevant factors.
Too few drivers change their driving habits when towing. For instance...
My Escape yields remarkable fuel economy when towing, but only with moderate acceleration and reduced highway speeds.
Any obsession with unwieldy oversized tow vehicles is simply unfounded and pretty much negates the very purpose of compact fiberglass travel trailers.
Another example would be the new trucks which cutout cylinders under lighter loads. Light acceleration and moderate cruising speeds are the ONLY ways to realize their rated mileage and you won't get much 4CYL time on these trucks when towing anything.
For best results, get a tow vehicle which fits the application and drive it within its most efficient range. The truth is,only oversized Travel Trailers need oversized Tow Vehicles.
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Old 03-06-2015, 12:20 PM   #4
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I am willing to tabulate responses to this thread in a pdf format like the attached file. This way we'll have a file single place with all replies. Let me know what you think. Disregard the little tabulation box below the entered information. When done we could, with permission turn it into a sticky.
This looks good Norm
When done we could review our data and make corrections and add any missin ginformation. As you identified there is quite a difference between US and Imperial gallons. (BTW mine are in US MPG)
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Old 03-06-2015, 12:26 PM   #5
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Originally Posted by honda03842 View Post
I am willing to tabulate responses to this thread in a pdf format like the attached file. This way we'll have a file single place with all replies. Let me know what you think. Disregard the little tabulation box below the entered information. When done we could, with permission turn it into a sticky.
Why do another file?
We have space to write the information in each one profile and we can correct'it anytime...
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Old 03-06-2015, 12:37 PM   #6
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Why do another file?
We have space to write the information in each one profile and we can correct'it anytime...
My view is profiles are not easy to compare.
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Old 03-06-2015, 12:43 PM   #7
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I'm happy to correct for the Canadian gallon. I assume it's a 4L gallon????

As well missing information or up dates can be sent to me via PM and I'll update and add columns as desired.
1 Imperial Gallon = 1.20095 US Gallons

1 Imperial Gallon = 4.54609 liters
1 US Gallon = 3.78541 Liters

1 US MPG = 235.215 Liter/100 km
1 Imperial gallon = 282.481 Liter/100 km

Hope this helps
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Old 03-06-2015, 12:49 PM   #8
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Now you have to go back to each contributor to determine how they calculated MPG.
I use litres per 100 kilometers and miles per US gallon, so you shouldn't assume that because the poster is in Canada, that they used imperial gallon.
There are so many variables in the mpg that I don't think the numbers are of any value.
Better would be a descriptor: towing mileage ( OK ), city not towing ( lousy ).
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Old 03-06-2015, 01:01 PM   #9
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I'm happy to correct for the Canadian gallon. I assume it's a 4L gallon????

As well missing information or up dates can be sent to me via PM and I'll update and add columns as desired.

I think it should become a sticky; it's such a common question.

Let me also know if you believe it's unnecessary
A spreadsheet might be more useful (like Jon Vermilye's trailer weight spreadsheet) so it could be sorted and averaged. I'd suggest separating trailer make, model, length, and weight, and tow vehicle make, model, year, and engine displacement. You'll need to simplify and standardize the descriptors in non-numeric fields to make it useful for sorting (i.e., F-150, rather than F-150 Super Crew XLT 4x4). When ranges are given in numeric fields, you'll probably want to use a mid-range figure so averages can be calculated.

Since there are so many variables, it's hard to say how useful it will be in the end, but we're having fun, right?
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Old 03-06-2015, 01:14 PM   #10
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Originally Posted by Glenn Baglo View Post
...There are so many variables in the mpg that I don't think the numbers are of any value.
Better would be a descriptor: towing mileage ( OK ), city not towing ( lousy ).
Descriptors would be even more subjective. And at least numeric data can be averaged to smooth out variations in individual calculation methods and towing conditions.
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Old 03-06-2015, 01:19 PM   #11
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Descriptors would be even more subjective. And at least numeric data can be averaged to smooth out variations in individual calculation methods and towing conditions.
Looking at my own numbers, which vary widely depending if I'm climbing mountains or driving the flats, or how many red lights I sit at, I've come up with "OK towing, lousy city, good freeway".
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Old 03-06-2015, 01:23 PM   #12
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Originally Posted by honda03842 View Post
My view is profiles are not easy to compare.

If the Registry file is well complete, you'll find the information anytime.

Example :

- Go to the top of the Web page FibergassRV
- Find Registry with the mouse
- Select "Search the Registry"
- Lower in the page you have case "Tow Vehicle"
- Write in the case " Journey " for the sample
- Lower in the same page clic on " Search now "
- You'll find all info registry with a Tow Vehicle Journey...

- Do the same with " Honda " in "Tow Vehicle" case and you'll find the info on all Honda registry correctly...
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Old 03-06-2015, 01:28 PM   #13
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Glenn, I set my trip computer at the beginning of a round-trip to CA to camp at the beach, about 1500 miles round trip. The trip included all the conditions you described. At the end of the trip my computer indicated 17.9 miles per gallon. Is that good, bad, or just okay? What am I comparing it to?
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Old 03-06-2015, 01:38 PM   #14
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I seem to get about 15 litres per 100 kilometers towing, which is not as good.
Just increasing tow speed by 5mph will burn a lot more gas, so need people to classify how they drive too - "geezer" "speed demon" etc.
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