Help me learn - Page 7 - Fiberglass RV


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Old 06-06-2017, 06:19 AM   #85
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Name: bob
Trailer: 1984 u-haul ct13; 1996 Casita 17 Spirit Deluxe; 1946 Modernistic teardrop
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The original Uhaul hinge is a Polar #402. I think they were for a commercial freezer or refrigerator.
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Old 06-06-2017, 06:23 AM   #86
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Yeah I think the replacement hinge is polar 412. I will see if maybe I can. Get the bushing by itself. Hinges are not super cheap.

Also, the axles that this thing come with are pretty. Rudimentary from what I can tell. The camper bounces pretty hard when pulling it. I am kinda guessing it's normal? There are no shocks on this thing?
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Old 06-06-2017, 07:52 AM   #87
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It's a 30 year old torsion axle, so pretty tired by this time. There are no shocks. Ours is bouncy too, but since it gets little use now I'm not going to go for a new axle. The original axles use a sealed bearing hub, can not be greased or serviced in any way. Wheels are 5 on 4 3/4 bolt circle, so not a standard replacement wheel like you would find at Tractor Supply or Northern Tool. No easy way to install brakes either. Welcome to the Bizzaro World of Uhaul.

Edit; Looking at the set of NOS Polar 402 hinges that I have, I don't think there is a bushing. They are brass hinges, chrome plated. There is a nylon spacer for the hinge to pivot on.
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Old 06-06-2017, 08:24 AM   #88
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Originally Posted by mary and bob View Post
It's a 30 year old torsion axle, so pretty tired by this time. There are no shocks. Ours is bouncy too, but since it gets little use now I'm not going to go for a new axle. The original axles use a sealed bearing hub, can not be greased or serviced in any way. Wheels are 5 on 4 3/4 bolt circle, so not a standard replacement wheel like you would find at Tractor Supply or Northern Tool. No easy way to install brakes either. Welcome to the Bizzaro World of Uhaul.

Edit; Looking at the set of NOS Polar 402 hinges that I have, I don't think there is a bushing. They are brass hinges, chrome plated. There is a nylon spacer for the hinge to pivot on.
Gotcha. I wonder if i could just replace it with something like this?

Ultra-Tow™ Stub Torsion Axles — Pair, 1000-Lb. Capacity per Pair | Trailer Stub Torsion Axles| Northern Tool + Equipment

The nylon spacer is what i am referring to. I think its warn out quite a bit on the inside causing the door to sag just a little bit.
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Old 06-06-2017, 10:11 AM   #89
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I would not use those stub axles. Much better to use a one piece axle, like a Dexter or similar. They will custom size it to your measurements and trailer weight.
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Old 06-06-2017, 10:14 AM   #90
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I would not use those stub axles. Much better to use a one piece axle, like a Dexter or similar. They will custom size it to your measurements and trailer weight.
good point! I will look into Dexter.
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Old 06-06-2017, 10:24 AM   #91
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Another question. Its crazy that these little solar panel on the roof! had no idea. Do they even work? I am sure efficiently on these is like 5%. Is it even doing anything? is there an easy way to upgrade it?
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Old 06-06-2017, 10:27 AM   #92
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If you do much off-highway or backcountry camping, Dexter also offers a "Flexiride" torsion axle with an adjustable ride height. It's not "push a button" instantly adjustable, but it does allow you to set it before a trip depending on where you're going.

I agree about getting a one piece axle. It adds strength to the frame.
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Old 06-06-2017, 10:30 AM   #93
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If you do much off-highway or backcountry camping, Dexter also offers a "Flexiride" torsion axle with an adjustable ride height. It's not "push a button" instantly adjustable, but it does allow you to set it before a trip depending on where you're going.

I agree about getting a one piece axle. It adds strength to the frame.
Whats the process of getting one of these? I assume they make them in different lengths. I would probably need a 1000-2000lbs one correct?
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Old 06-06-2017, 11:15 AM   #94
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Whats the process of getting one of these? I assume they make them in different lengths. I would probably need a 1000-2000lbs one correct?
They are custom sized and built for each application. There will be some specific measurements you have to provide on the order form. Because of that they are non-returnable. The Flexiride axle, if that's what you're thinking, has shorter axle arms than the non-adjustable Torflex, so it will probably have to be mounted at a slightly different point on the frame to center the wheels in the wells.

There is some benefit to hiring it done (places that make and sell a lot of utility trailers are often good bets). They take the measurements, they order the axle, and if they make a mistake, they eat the cost of re-ordering a new axle.

The weight rating should take into account the fully loaded weight of your trailer with some additional margin. Too high a rating makes a harsh ride; too low and you may end up overloaded. I'd guess 2000# would be about right for a U-Haul CT13. Axle models carry a maximum weight rating, but they can be fine-tuned ("de-rated") for lower weights by reducing the length of the rubber cords inside.
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Old 06-06-2017, 11:20 AM   #95
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Any idea on a cost of having this done by somebody?
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Old 06-06-2017, 11:46 AM   #96
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Seems to vary quite a bit. It would make sense to get several bids. Wild guess, $700-1000, depending on where you live and whether you add trailer brakes as part of the upgrade. If you share your general location, someone here might have a good recommendation.
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Old 06-06-2017, 11:50 AM   #97
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$1000 sounds fair. I am in Denver.
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Old 06-06-2017, 12:43 PM   #98
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[QUOTE=Jon in AZ;643504]If you do much off-highway or backcountry camping, Dexter also offers a "Flexiride" torsion axle with an adjustable ride height. ]

Is it Dexter that has the adjustable spindle arms, or a separate company that sells under the Flexride name and is actually the Universal Group company. The Flex Ride spindle arms mount on a spline so the ride height can be adjusted.
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