Four Wheel Drive versus Two Wheel with Posi Rear End - Fiberglass RV


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Old 03-22-2010, 10:13 AM   #1
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Name: Lyndon
Trailer: 1996 19 ft Scamp 19 ft 5th Wheel ('TOGETHERNEST' SLEEPS 8
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When I bought my truck it was used primarily for towing our 5th wheel Scamp, so I put a lot of thought into the options and this is what I came up with: That a 2 wheel drive gave better gas mileage and a posi rear end would give me more traction in most cases.


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Old 03-24-2010, 11:50 PM   #2
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Trailer: 1972 boler American and 1979 Trillium 4500
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Theoretically I think you are right. Mathmatically, you are off. Hard to get 120% traction.

The first question is, what would you need 4 wheel drive for?
Second question, will you always be driving with the trailer on?

In any case, consider the trailer package.
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Old 03-25-2010, 05:55 AM   #3
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Name: Lyndon
Trailer: 1996 19 ft Scamp 19 ft 5th Wheel ('TOGETHERNEST' SLEEPS 8
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Theoretically I think you are right. Mathmatically, you are off. Hard to get 120% traction.

The first question is, what would you need 4 wheel drive for?
Second question, will you always be driving with the trailer on?

In any case, consider the trailer package.
You are right, should have been 1/2 that. I don't need a 4wheel drive but it seems most think they do; Just my thoughts.
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Old 03-25-2010, 10:33 AM   #4
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Name: Dave
Trailer: 2000 Scamp 16 ft Side Dinette Deluxe / 2006 Toyota Tundra
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I tow without an equalizer hitch just an added sway bar so I like the extra weight the front diffential adds.
I have needed 4-wheel drive to get out of some of the back country spot we put our SCAMP into.
But my next rig may just be 2-wheel drive.
My wish is for a small Diesel pick-up like Toyota has in all other countries.
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Old 03-25-2010, 05:52 PM   #5
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As a response to your weight question, when you usually need traction it's usually going up a hill in which case the center of gravity shifts to the rear of the vehicle. I think most places that I could take my little 13' without damaging it I could get into with 2 wheel drive and a good limited slip. I have all wheel drive and even going through a snowey pass it isn't much of an asset, because you can only drive as fast as you can stop. If you don't unkook and go 4x4ing there really is no need for it and you could benefit from better fuel economy.
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Old 03-26-2010, 09:23 AM   #6
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for whatever it's worth,i'll add by 2 cents worth.

for 7 years we towed out 17' casita with a '01 tundra. covered the lower 48 with it. burned up one transmission.we also found ourselves in situations that more power and 4wd would have been nice.

for many years used a 2wd backhoe (tractor) and could'nt see why anyone would want 4wd.
it happened that we wound up with a 4wd.found out it was much more versital.

about a year ago, the tundra hiccupped and we decided to look at a new dodge. several of our neighbors have them. we wound up buying a r3500 4wd diesel. lot's of power and weight. the mileage is better than the tundra and far more comfortable.i find myself wanting to get back on the road. something i had been getting tired of. guess part of it is old age. (we are in our 70's now)
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Old 04-16-2010, 06:19 PM   #7
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for whatever it's worth,i'll add by 2 cents worth.

for 7 years we towed out 17' casita with a '01 tundra. covered the lower 48 with it. burned up one transmission.we also found ourselves in situations that more power and 4wd would have been nice.

for many years used a 2wd backhoe (tractor) and could'nt see why anyone would want 4wd.
it happened that we wound up with a 4wd.found out it was much more versital.

about a year ago, the tundra hiccupped and we decided to look at a new dodge. several of our neighbors have them. we wound up buying a r3500 4wd diesel. lot's of power and weight. the mileage is better than the tundra and far more comfortable.i find myself wanting to get back on the road. something i had been getting tired of. guess part of it is old age. (we are in our 70's now)

A Dodge series 3500 4WD with a Cummins pulling a Casita?

I'm pretty confident in thinking you will newer experience a episode of the tail wagging the dog!

We pull a 16 ft Scamp with an older full size 4WD diesel Chevy Blazer. We get better fuel economy than in our younger days towing a Compact Jr. with a Peugeot 404.

One significant advantage of the 4WD is the 2:1 reduction in the transfer case. For backing slowly into a tight spot, especially up hill that low range 4WD setting makes things go so much more smoothly. I wouldn't want to be without it!

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Old 04-16-2010, 06:53 PM   #8
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I had to tow my trailer down a wet rainy yucky clay road in FL last year that was crowned in the middle, so if another car approached you ended up being on one side of the road that slopes down to the ditch. I was sure glad I was driving my AWD Subaru instead of my 2WD non-posi truck, because the AWD helps the front wheels climb back up the slippery slope instead of sliding downhill with 2WD due to gravity as the rear wheels push you forward. Having good traction in the rear is great, but it's so much nicer when conditions call for it to also have traction on the wheels that steer you.

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Old 04-16-2010, 10:38 PM   #9
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experience an episode of the tail wagging the dog!
Been there done that, grateful you gave me a way of describing what it felt like.

I now know you have to give the tow vehicle some more gas (if you can) to get out of it.

Letting up on the gas to concentrate on steering only made us suffer through the experience longer. Perhaps even made it worse.
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