View Poll Results: your towing speed
55mph 167 13.11%
60mph 480 37.68%
65mph 450 35.32%
70mph 144 11.30%
75 mph or faster 33 2.59%
Voters: 1274. You may not vote on this poll

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Old 05-14-2009, 03:23 PM   #155
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Wink Towing speed

We usually tow as close to 1600 Rpm, approx 58 mph, using overdrive in our '03 Dodge 3/4 ton PU. It has a Cummins diesel and we've found that we achieve our best mileage at that combination. We'll average almost 16 mpg overall on a 1500 mile trip. With level highways and a slight tailwind we've gotten as high as 23 and as low as 13 in the mountains. We tow a 31ft '84 Excella and have gotten approx the same performance towing a '96 25' Classic. It really is interesting to watch other rigs fly past us and then find them just ahead of us when we pull into the next fuel stop, etc.
I used to think I had to travel at or near the posted limit, but have found the past two years that I am now more relaxed and appreciate the lower fuel costs. Dean
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Old 05-15-2009, 07:27 AM   #156
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Tow speed or just speed

I love these speed related discussions.... While I tow at 61 mph my experience on two wheels is a bit different.... 150 mph on a Suzuki Hayabusa, the front and the rear wheel off the ground at over 100 mph... (at different times) So, that is why I tow at 61... not in a hurry anymore....

And as noted by others, when I tow it is quite often I am passed by the same vehicle twice or three times during the day.(?)

Having said all that, we all find where we are comfortable or best enjoy this incredible gift of being able to pull an Airstream. Think about it... most of the folks out there are pulling boxes around that won't exist in a few years. Some of us are more competitive, yes! Others are more laid back... or as stated, into the "Old F..." mode. But we all are members of a very unique group of individuals who have great respect for an amazing piece of RV technology, the Airstream Travel Trailer.

By the way... I flew the Hayabusa at both ends at age 65!
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Old 05-15-2009, 08:52 AM   #157
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We tow where possible at about 62 to 65 mph which is around 1800 rpm on the old tach from the 7.3 International Harvester Diesel,that will result in about 17mpg which ain't bad for a rig that weights in at almost 14,000 lbs.
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Old 05-28-2009, 11:05 AM   #158
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Quote:
Originally Posted by Pahaska View Post
The Allison 6-speed is a double overdrive transmission. 5th gear is the same as 5th was in the former 5-speed in my 2003.

With the Classic 28 in tow, I can be in 6th from the mid-50s up. At the lower speeds, I am more likely to drop to 5th on a mild hill. ...
The F-250 PSD has a six gear transmission, but it is programmed to use only five at a time. I can't remember which gear is used when I use the tow/haul scenario, but I know 1st, 2nd, and 6th are the same weather in tow/haul or not. Either 3rd, 4th or 5th is idle in tow/haul and active when not in tow/haul and one of those gears is idle when not in tow/haul and becomes active in tow/haul. I'm thinking it is 4th and 5th that switch out depending on the mode the transmission is in. Unfortunately, Ford does not offer a manual up shift/down shift option. It would be nice because there are times I can tell the engine is "lugging" and about to down shift but doesn't because it hasn't reached some magic tach speed and the truck reaches the peak of the hill and doesn't reach the need to downshift, but considerable speed may have been lost.
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Old 06-04-2009, 10:50 AM   #159
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I drove from Olympia, WA to Albuquerque, NM last month - a bit over 1,400 miles. My speeds ranged from 68 mph to 45 mph going up hills, etc. My Garmin GPS calculated an average of 53 mph (moving average) for the trip. My '99 Suburban (350 cu stroked to 383 ci) averaged 11.5 mpg over the course.
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Old 12-17-2009, 10:48 AM   #160
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down the road

It seems, although i am a newbee, that consistently i can average 50mph, that is , for instance cover 500 miles in 10 hours and that includes stops for fuel and restroom, snack breaks....; this in an experience frame of 25000 miles since march of this year.....70+ feels great on the straight and flat.....up hill depends on the grade
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Old 12-17-2009, 11:02 AM   #161
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I tend to try to stick to 62-65mph. Anything more than 65 on my truck and she starts DRINKING the diesel.
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Old 12-17-2009, 11:05 AM   #162
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55mph 4.7L engine, 3.55 rear end, 4600 pound trailer. Yep 55 is perfect. Any faster and the truck is working

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Old 12-17-2009, 11:05 AM   #163
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I generally tow at or just above the posted speed, depending on conditions.
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Old 12-17-2009, 12:30 PM   #164
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Below 65 in CA, above that it becomes a felony (I think)... And with a CDL I try to not collect any tickets anyway since you can't fight them...

Cheers I guess I vote 65...
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Old 12-17-2009, 01:37 PM   #165
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Used to cruise just under 80. But ever since I shredded two trailer tires, tread-separated a third, and side-wall bubbled a fourth (all Marathon tires, with less than 5,000 miles), I'm max 65mph at all times- no problems after 12,000 miles.
Observed negligible difference in gas mileage.
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Old 12-17-2009, 01:40 PM   #166
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The manual for my trailer says the maximum towing speed is 65. The manufacturer of my trailer tires says the max towing speed is 65. Therefore, that is as fast has I ever tow. What actual speed I tow at depends on traffic, weather, and road condition.
Regards,
Ken
P.S. if you tend to be timid, don't read all of the posts in this thread. You will be tempted to pull over and get out of the way every time you see another Airstream.
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Old 12-17-2009, 02:20 PM   #167
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Towing speeds.

The fuel consumption rate, for various tow vehicles, is all over the place.

With some vehicles, little to no difference is noted, and probably because that vehicles is a fuel hog to begin with.

During my years of towing a loaded 31 foot Airstream, all over the USA, I used an 'airspeed indicator" from an aircraft. They are easy to install in any tow vehicle.

They basically provide wind speed and direction for you.

As an example, if you speedo says 60 mph, and the airspeed guage says 50 mph, you have a 10 mph tail wind, therefore you could increase the towing speed, if you wished.

On the other hand, if the speedo says 60 mph, and the airspeed says 70 mph, then you have a head wind, of ball park 10 mph.

Regulating your towing speed based on the wind speed and direction, makes a significant difference in mileage.

Andy
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Old 12-17-2009, 03:04 PM   #168
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Quote:
Originally Posted by Inland RV Center, In View Post
The fuel consumption rate, for various tow vehicles, is all over the place.

With some vehicles, little to no difference is noted, and probably because that vehicles is a fuel hog to begin with.

During my years of towing a loaded 31 foot Airstream, all over the USA, I used an 'airspeed indicator" from an aircraft. They are easy to install in any tow vehicle.

They basically provide wind speed and direction for you.

As an example, if you speedo says 60 mph, and the airspeed guage says 50 mph, you have a 10 mph tail wind, therefore you could increase the towing speed, if you wished.

On the other hand, if the speedo says 60 mph, and the airspeed says 70 mph, then you have a head wind, of ball park 10 mph.

Regulating your towing speed based on the wind speed and direction, makes a significant difference in mileage.

Andy
Sounds like a interesting thing to do. I can't argue with slowing down in a head wind will increase your MPG. However if you just drive the same speedometer speed all the time, I think it will average out over time, unless you are driving around the world. If you do drive around the world at mid latitudes in the northern hemisphere, I suggest you drive east. I think there is a law something to the effect of:
"For every wind, there is an equal and opposite wind somewhere".
Regards,
Ken
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