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Old 12-03-2020, 05:59 PM   #1
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Upgrade for single axle torsion suspension

My single axle NoBo has Dexter torsion suspension and is so bouncy it tosses things in the air on small bumps. What do you all think is the best upgrade for a smooth ride on back country roads?
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Old 12-03-2020, 06:06 PM   #2
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Reduce air pressure in the Nobo tires and slow down. That's about all you can do.
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Old 12-03-2020, 06:37 PM   #3
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Try and adapt a shock setup.
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Old 12-04-2020, 12:13 PM   #4
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Lins,
Do you know what company would have something that might work on my single axle torsion bar setup? Or are you thinking I should just replace the whole suspension? And if so, with what?
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Old 12-04-2020, 12:26 PM   #5
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I don't, no, otherwise I would have them myself. I've seen some very nice home made units on here. Google also comes up with Casita that might work, but I haven't looked too far into them.
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Old 12-04-2020, 12:53 PM   #6
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I just got this response from MorRyde regarding their Air1 system and whether they have anything that would work on my rig, in case anybody is interested. It doesn't sound good. It sounds like you have to improve the vertical travel in order to smooth out the ride and 2" of vertical travel is baked into the NoBo configuration. But I'm going to look and see what it would take to raise the fenders. That doesn't sound too hard unless there are other obstacles.

"Mark,

A couple of things are of concern.
1. The Air One has 6-7 inches of vertical travel compared to less than 2 on torsion axles.
2. The wheels are mounted on the outside of the frame with fenders.
a) Fenders would have to be relocated.
b) The trailer would most likely be lifted 4-6 inches minimum.
c) We currently do not have a system for your application.

Unfortunately It would require major designing to manufacture a system that would work and for a one off build the end product would be very cost prohibitive.

The Air1 is a new product for MORryde and will be expanded in the future so there most likely will be a system that would work but most likely will be a couple of years out. Just monitor our web site www.morryde.com as new products are highlighted when released for production.

Thank you for your interest in MORryde products and Im truly sorry were not currently able to help with the suspension."
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Old 12-04-2020, 01:06 PM   #7
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Quote:
Originally Posted by D W View Post
Reduce air pressure in the Nobo tires and slow down. That's about all you can do.
Slowing down would be the prudent thing but usually rejected.

Adapting shocks to the torsion axles would require some "creativity" and even with shocks on rough roads the "bounce" would still be there. Shocks are merely dampers to stop the oscillation of the axle AFTER the initial bump. This is built into the torsion axles by use of the "rubber tubes" in them.

Reduced air pressure will help some but still has to remain high enough to carry the load.

On rough roads NOTHING works better then slowing down. Funny thing, this also helps keep the trailer from beating itself to death.
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Old 12-04-2020, 01:42 PM   #8
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X2 what DW and Titan Mike said. Best regardless of what else you do on 'back country' roads. We also disconnect the WDH bars on longer gravel and dirt runs.
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Old 12-04-2020, 02:55 PM   #9
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Sorry, I'm not sure what WDH stands for. It sucks being a newbie.
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Old 12-04-2020, 03:35 PM   #10
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WDH = Weight Distribution Hitch
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Old 12-04-2020, 06:10 PM   #11
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Something I have found on my A-frames (also single axle, torsion suspension) is to get it weighing the max minus a couple of hundred pounds. I do this by carrying a full water tank whenever possible. This seems to reduce the bounce. On A-frames, the water tank is just behind the axle, which helps with both the bounce and the heavy tongue weight a little.

According to the weight charts, I could also reduce tire pressure to 55 PSI and still have plenty of reserve. I haven't gone there because the OEM Castle Rocks have a concave tread shape, which makes me a little nervous. But I no longer worry about keeping the tires above 65PSI - if they drop a few PSI under 65PSI with altitude and temp changes, I'm OK with that.

If the road is rough, I just slow down a little. There are many Texas, Colorado, and Wyoming secondary roads that have 70mph speed limits. But the road is just too rough to be comfortable at that speed.

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Old 12-04-2020, 06:11 PM   #12
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Yea, WDH. Ok. I'll think about that but not sure that would help much. The "just slow down group" offer some pretty practical advice and that works for short stretches of rough road but I bought this "back road" RV for going 50 or 60 miles across the desert on real back country roads in Colorado, Utah, Arizona, and New Mexico. Going 5 mph over washboards for hours to keep your cabinets off the floor doesn't cut it.

But as I talk with you guys and talk with MorRyde this is clearing up and the reality is setting in. Long travel suspensions are just as important for back road RVs as they are for Baja rigs. The 2" of vertical travel on a trailer sold as a back road adventure rig is a joke. But, to be fair, there aren't many good options apparently as some of you guys pointed out. MorRyde is telling me that their new Air1 system is the best thing that has happened to trailer suspension in many years with 6-7" of vertical travel, which is huge. But they are saying that each set up for any given trailer is a big deal. So-o-o a solution from them is years away.

Back to square one.
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Old 12-04-2020, 06:39 PM   #13
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As I've told other NoBo owners, FR doesn't make any true off-road trailer. They make regular small trailers to "look" off-road capable.
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Old 12-04-2020, 08:31 PM   #14
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bikendan,
That's pretty true. It's all in the graphics, right?

Certainly not in the suspension.
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Old 12-04-2020, 10:33 PM   #15
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Quote:
Originally Posted by Hawk on the Wing View Post
bikendan,
That's pretty true. It's all in the graphics, right?

Certainly not in the suspension.
And the website/brochure pictures.
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