Torque...what does it really mean? - Page 2 - Fiberglass RV


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Old 09-27-2012, 07:04 AM   #15
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B&C,

If the manufacturer provides no towing rating, the vehicle is not recommended as a tow vehicle. Period.

I'd caution against buying a new vehicle just to get one more fuel efficient without doing an objective analysis of your total, overall costs. A six year old vehicle is not old unless you have driven the wheels off from it and the depreciation is going to be a hefty expense if you buy a new vehicle to replace it. You can buy a lot of gasoline for the price of that depreciation.

Of course, it all depends on how much you can afford and your individual tastes, but a minivan can be an extremely versatile and practical vehicle.
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Old 09-27-2012, 07:29 AM   #16
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Thanks, Tom. That is exactly why we vacillate. It seems every Spring new car fever (or should I say 'newer') hits and the menfolk in our family seem as mad as a March hare for a short spell. Generally sanity prevails but just in case it doesn't I like to have all the information I need at hand.
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Old 09-27-2012, 07:38 AM   #17
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Thoughts on auto costs

I agree about the depreciation factor. It takes a while to recover new car costs.

We've towed for 5 years, probably some 60,000 miles, assuming about 21 mpg with various trailers. We spent at today's prices some $12,000 for gas.

With a 12-15 mpg tow vehicle we would have spent $16-20,000, a $4-8,000 difference. Now that's not a trivial amount of savings however it's not enough to get a new tow vehicle if you have one that works.

To justify a new vehicle in gas savings alone, you need to do a lot of traveling. In our case our tow vehicle is our only vehicle, gets good mileage around town as well as when towing and like many modern vehicles has been very reliable. We view reliability as an important factor.

Another important factor for us is the ability to drive moderate dirt roads. The on demand 4 wheel drive has allowed this for us however it is no Jeep or even Subaru.

The last factor is the unknown future price of gas. In the last four years the price of gas has doubled and many have clearly stated that they want gas prices to double again. Significant price increases can make a more fuel efficient vehicle purchase wise.

Lastly our style of RVing reduces the cost of fuel on a per day basis compared to a weekend camper who may drive 500 miles on a weekend. On a daily basis we drive about 70 miles a day, less than we drove when we worked.
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Old 09-27-2012, 07:44 AM   #18
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Archimedes said "Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." That's torque.

For researching vehicles, new and used, I have found Edmunds has lots of information including in most cases tow ratings. Raz

New Cars, Used Cars, Car Reviews and Pricing - Edmunds.com
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Old 09-27-2012, 08:21 AM   #19
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From high school science work is defined as force times distance. If the force is in pounds and the distance is in feet, the result is foot-pounds or pounds-feet which is how torque is stated. Moving the trailer is work so you need torque to do that. Also from high school science is that horsepower is force applied over a time period. Acceleration. Or, the more hp, the faster you can apply the torque. Probably over simplified. Several of the above posts mention the engine speed where the torque is at the maximum for that engine. When you run out of oomph, either downshift or the automatic will do it for you.
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Old 09-27-2012, 09:48 AM   #20
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Once you master torque you will now have to find out what Octane and Cetain means and their numbers and so on. Once you find that out you will have to find out what your on board computer is set at for the various numbers you found out above then research to find a product you can connect to your On Board computer connection to change the variables (Shift patterns, air to fuel mix) and so on and all that is just going to take all the fun out of camping.
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Old 09-27-2012, 01:23 PM   #21
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torque is the measurment of force my wife applies to my ear when i have said something that she find embarising. it is directly related to whom is present.
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Old 09-27-2012, 01:56 PM   #22
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Torque Calculation

The following calculation is designed to show torque available for initial acceleration (the ability to start a load on a hill) and hill climbing. The people at Can AM RV suggest a value of 5 for serious hill work and at least a value of 7.

The following is the torque calculation for our tow vehicle:

1. Max available torque: 162 ft-lbs
2. First Gear Ratio: 3.53
3. Final Drive Ratio: 4.76
4. Tow Tire Radius: 1.2 ft
5. Tow Vehicle + Trailer Wt: 6400 lbs
6. Lbs per Ft-lb of Torque: 3.1 lbs of weight per ft-lb of torque

To get the lbs per foot-pound of torque you do the following

1. x 2. x 3. / 4. divide the result of this into the combined weight (5) of the tow vehicle and trailer = 6.

According to Can RV a value of 7 is acceptable and 5 great for mountains. The number for our tow vehicle came out surprising low which makes me suspicious. Any of you scientific types, please check my calculation

Since we plan to get a new tow vehicle in a couple of years I calculated the value for a number of different vehicles. It's an interesting exercise. As Andy Can AM suggests in his post though some larger vehicles have more torque, they also often weigh a lot and that reduces the available torque for the trailer load.

To prepare this article I slowly, really slowly, re-read the Can AM article I posted yesterday. There is tons of very good information in that article. When I get back to Ontario I intend to visit their store.
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Old 09-27-2012, 02:02 PM   #23
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Sadly, Norm, as I'm sure you know, our gasoline is a wee bit more costly than in the USA. I'm still working on moving the world--or at least my little corner of it but guess although I'm quite good at speaking softly I haven't found a bit enough stick to move much of anything. I do, however, agree with Raz that the Edmunds site is a good starting point. High school science? Hmmm...I knew there was a reason I switched to stenography, typing, accounting and office practice. (Thank heavens I kept up on the languages components or I would never have been allowed to continue my studies past high school.) Shame on you, Darwin. I am very much like Winnie the Pooh it seems--a bear of very little brain--and quite pleased with today's understanding that the big stick turns the gizmo. As far as torque in relation to ears, I learned a lot about that in my childhood, John, as where I lived corporal punishment was alive and well both in the schools and in the home. Just never thought of it as 'torque'.

And now that I've driven everyone including myself to distraction regarding what torque is and how much torque is needed to pull a Boler, had best run along and get ready for our weekend company!

Thanks to all of you for the information and the laughter.
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