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Old 11-05-2014, 12:45 PM   #29
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Originally Posted by Inland RV Center, In View Post
Howie.

My records show that your Airstream should have 4000 pound axles with 12 inch bakes.

Andy
Sorry Andy your records are incorrect. The trailer was manufactured with 2,800 lbs axles and the ones I replaced, and bought from you, are 3,200 lbs.

By definition Pivot point, the center point of any rotational system There can only be one pivot point within a system. You can choose to select a different point while evaluation a mechanical system, but can only be working with one at a time. The force to maintain the system in equilibrium about a given point will still be the sum of the force times distance. Again it is a mathematical impossibility to reach the so called 1/3, 1/3, 1/3 relationship unless the combination was specifically designed with that in mind. Highly unlikely when dealing with so many variables involved here.

The pivot point we should be focused on here is the rear axle of the TV. A WD hitch is employed to reduce some of the trailer tongue load off that axle by transferring weight to the other axles, TV front and trailer. One should accept that the distances between the TV rear axle and the TV front axle and the trailer axles is not likely to be the same. Given that you should see that the above ratio is impossible to accomplish.

Now lets get away from 40 year old urban myths and deal with today's reality.
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Old 11-05-2014, 01:00 PM   #30
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Sorry Andy your records are incorrect. The trailer was manufactured with 2,800 lbs axles and the one I replaced, and bought from you, are 3,200 lbs.
That's correct for a 34 foot trailer.

The 31 foot Excella's use the 4000 pound axles.

Andy
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Old 11-11-2014, 10:11 AM   #31
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Best Weight Distribution hitch?

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Originally Posted by pjtaia View Post
Question for those of you towing 34' Airstreams: What is the best weight distribution hitch to handle the 1,700 lb. hitch weight on my 2002 34' with slide? Is it unrealistic to expect a WD hitch to actually distribute the weight equally between the front and rear axles (along with a little to the trailer...)? Sway control is also a factor, but without proper weight distribution it is a moot point...

Sway control with a PP or HA is not dependent on WD.

Depending on the TV the amount of front axle weight restoration varies according to TV manufacturers instructions.

According to your scale tickets the TW is approximately 1000-lbs or ten percent which is not unusual on a 34 (assuming the scale tickets were ask recorded the same day and same way). I would still expect it to be around 1200. Is the TT level when hitched ?

On an HA it is difficult to preload the hitch without an adjustable stinger or to cut and re weld stinger. Somewhere between 50-100% FALR is the likely target.


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