weight distributing hitch - Page 2 - Fiberglass RV


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Old 02-24-2003, 04:19 PM   #15
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I just read this thread and saw the comment about hitch extension. Be careful, as adding distance between the hitch ball and the truck's rear axle gives the trailer *more* leverage and more effect (both bounce and sway) on the truck.

OTOH, *shortening* the hitch bar will reduce the effects. Last summer, I pulled the pin on my hitch bar, pushed it into the receiver as far as it would go and drilled a new set of holes -- made quite a bit of difference even tho I only shortened it by a few inches. Recently, I modified my receiver to move it further forward and up a few inches each on my truck; the effect was even better but not as noticiable as the first shortening.

Another way to attack the effect of balance on the truck would be to *lengthen* the tongue of the trailer by attaching a longer arm with coupler underneath the original one. I have seen a 13 Scamp with a tongue long enuf to have a bike rack between trailer and truck and have plenty of turn room; the owner constucted a "T" and welded it to the A-frame underneath.

BTW, lengthening the tongue will have the effect of lightening the tongue weight as the torque lever between trailer axle and coupler will be longer. Anyone contemplating carrying more load on the tongue (genset, extra propane, bikes, etc) could benefit from this.

Pete and Rats, with better ground clearance under the truck
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Old 02-26-2003, 04:23 PM   #16
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Bounce

A WDH may help some but you are going to get some oscillation bounce on some roads. I have a WDH (not my first) and some roads (I-10 in Louisiana) still give me the bounce. I have tried several adjustments with no difference. But it is better than without a WDH. It will also stop any hitch rattle or jerking. I don't need one for my rig but I like the ride better.
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Old 02-26-2003, 04:28 PM   #17
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Why WDH?

To all who uses a wdh.
Why did you install a wdh?
For noseweight compensation and/or for stabilising the TT?
Or .... ?
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Old 02-26-2003, 04:42 PM   #18
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Lex

When you hook a trailer to a vehicle the hitch is a hinge. A WDH helps stiffens the hinge in the vertical plain and can transfer some of the hitch weight to the vehicles front wheels and trailers wheels. Because it puts tension on the hitch receiver it stops any rattle or jerking in that area. Also as in this discussion it helps the bounce that you can get on certain roads by stiffening this hinge to help prevent oscillation. The vehicle and trailer tends to bounce on a single plain rather than two different ones.
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Old 02-26-2003, 06:36 PM   #19
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certain concrete hiways go.......

ka-dunk, ka-dunk, ka-dunk.

Not only the expansion joints but some concrete 'slumps' (if that is the right word) when curing. So its got a crown from one expansion joint to another. Noticable in a car, really noticable towing a trailer. Then if the speed/wheelbase is just right you get the 'harmonic bounce' mentioned. This harmonic bounce is sort of the same thing that happens when you'd push a heavy ball on a pendulum, it swings a little, when it comes back, push a little more and so on til that sucker is really swingin back and forth.

Back in 99 I remember a stretch of I-10 west of NuAulins when I thought the front axle of the motorhome was gonna come up thru floorboard.
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