MPH towing test on two trips

[Don (W5IT)]

OK I did the numbers and slowing down from 70 mph to 65 mph, saved 3/10 of a mpg.

My tip last year running right around 70 mph gave me 9.5 mpg one fill up (Both tanks) and 9.6 the other.

This trip was 1049 miles on 107 gallons. Which worked out to be 9.8 mpg. All but about 30 miles were hooked to the fiver towing.

Now a "Full load of fuel" in both tanks is 125 gallons or so. So this trip was one fill up. Last years trip was a bit longer (1,600 miles) thus required two fuelings.

Now another varible was this year I had the fresh water tank full as I planned on a few days without being at a campground. So that is around 80 more gallons of water than I had last year. Last year I had maybe 20 gallons of water on board. This year the 110 gallon water tank was full.

So instead of the 23,000 pounds I scaled last year, I scaled almost 24,000 pounds this year.

The rig/combo is the one in my sig.

That's the facts Jack!

[Don (W5IT)]

OK I did the numbers and slowing down from 70 mph to 65 mph, saved 3/10 of a mpg.

My tip last year running right around 70 mph gave me 9.5 mpg one fill up (Both tanks) and 9.6 the other.

This trip was 1049 miles on 107 gallons. Which worked out to be 9.8 mpg. All but about 30 miles were hooked to the fiver towing.

Now a "Full load of fuel" in both tanks is 125 gallons or so. So this trip was one fill up. Last years trip was a bit longer (1,600 miles) thus required two fuelings.

Now another varible was this year I had the fresh water tank full as I planned on a few days without being at a campground. So that is around 80 more gallons of water than I had last year. Last year I had maybe 20 gallons of water on board. This year the 110 gallon water tank was full.

So instead of the 23,000 pounds I scaled last year, I scaled almost 24,000 pounds this year.

The rig/combo is the one in my sig.

That's the facts Jack!

[Frankenstien]

Thanks For sharing... :-D

[allendp]

Hey Don, it has been my experience that wind affects my mileage much more than speed. If I am facing a strong headwind my mileage really suffers conversely if I have a good tail wind I really realize better mileage. I usually vary my highway speeds from 60 to 70 MPH depending on the conditions.

[Prin]

Don,

I am new to the forum and apologize for not knowing how to contact you with a private message. I tried but to no avail. I am interesting in doing some wiring changes. Our fifth wheel is prewired for a generator, but we do not have one. I have purchased portable generators that I would like to leave in the truck bed. Our electric plug in is at the very rear of the trailer. Can I work the wiring so they could plug in at the spot where the generator would normally go, that way I could run a short cord from the truck to the generator compartment. Seems like it would be much better than running 50 foot of line. Thanks,
Ted

[allendp]

Ted I ran 10/2 romex from my on board circuit breaker box to an outdoor jucntion box that I installed close to the kingpin box. I wired 6ft of 10/2 flexible wire to the junction box and installed the 30A locking plug that was supplied with the generator on the flexible wire. I keep it rolled up under the pin box when not connected to the genset.

I wired the romex to a new breaker I installed in the rigs breaker box. I leave the breaker in the off position when not plugged into the genset to prevent a HOT genset plug when the rig is hooked to shore power.