Shock Absorber Retrofit - Page 2 - Fiberglass RV


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Old 10-16-2012, 07:20 PM   #15
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Just an update to a help full article the Mapa Auto parts dealer in Owen Sound acquired the same retro kit for me to add to our trailer. She said she found 5 more kits in thier system.

Sway has not been a problem car has electronic trailer sway safety system; WD hitch and sway bar but sway bar using two smaller right angle units welded together still sounds like a project worth trying
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Old 10-17-2012, 01:49 PM   #16
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Originally Posted by Brian B-P View Post
I'm not ready yet to resort to custom fabrication, which I suspect would include the service of a spring shop.

Great write-up on the shock installation. Interesting comments about eliminating sway. I know car builders how have fabricated their own sway bars from round cold rolled stock and they seem to work. I always thought that a sway bar would have to be spring steel or be heat treated etc.

Here's a photo to clarify what I've always called a "sway bar"

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Old 01-12-2013, 01:48 PM   #17
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Ya that's a swaybar for me too.. I guess you guys are talking about a load distributing hitch for a 'trailer sway bar'? If so, yes, those things are the cats ass! Absolutely no sway and the trailer pulls behind like it's just an extension of the vehicle.

I have a question about the shocks - I understand they work great on the road..but how do they affect the experience during occupancy? Does it reduce the need for stabilizers while in 'Boler Deployed' mode?
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Old 01-12-2013, 02:16 PM   #18
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Don, if nothing else... stabilizers at the rear will prevent the front of the trailer from coming up off the ground when you have the rear filled with bodies And, yes... it has happened. Better than a carnival ride! But can be hard on the trailer when the hitch comes down hard because everyone runs to the front!
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Old 01-12-2013, 08:27 PM   #19
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Don, if nothing else... stabilizers at the rear will prevent the front of the trailer from coming up off the ground when you have the rear filled with bodies And, yes... it has happened. Better than a carnival ride! But can be hard on the trailer when the hitch comes down hard because everyone runs to the front!
Hahahaha I could see that.. what I meant was in reference to walmart camping with the egg still hitched up to the tow rig
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Old 01-14-2013, 06:49 PM   #20
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Ya that's a swaybar for me too.. I guess you guys are talking about a load distributing hitch for a 'trailer sway bar'?
No, I was really talking about a suspension anti-roll bar. No, they are not normally found on trailers.

Quote:
Originally Posted by Kinslayer View Post
I have a question about the shocks - I understand they work great on the road..but how do they affect the experience during occupancy? Does it reduce the need for stabilizers while in 'Boler Deployed' mode?
No, the force applied by a shock depends on the velocity of suspension movement, so walking around inside doesn't trigger much effect compared to hitting bumps on the road. I have not noticed a change in that behaviour due to the shocks... but it was a good question!
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Old 01-15-2013, 01:39 PM   #21
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Do you know if you can use air shocks with this kit?
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Old 01-15-2013, 02:13 PM   #22
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I notice that Brian's suspension is leaf spring and I think your Scamp has a torsion axle, Steve...you might start by asking if the kit can even be used on such an axle!

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Old 01-15-2013, 04:38 PM   #23
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I've personal seen three trailers with torsion axles and shock absorbers. Larry Page's Scamp 5er, Gene Layton's 17' Casita and Merle Lilly's Scamp 5er with dual axles. See the picture of Merle's in the third page of this PDF: http://www.fiberglassrv.com/forums/d...mAxleSetup.pdf

I don't know air shocks wouldn't work, by why would you?
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Old 01-15-2013, 06:49 PM   #24
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RE: Shock on torsion axle....

Some European trailers use shock absorbers with a torsion axle, but they are designed for that. Our NA torsion axles don't seem to have a mount point for a shock absorber on the suspension arm.

But...it has been done before.

See this link on FGF on the subject:
Trailer Shock Absorbers

And this link to photos posted by someone who found a way to do it:
Scamp - Mod - S19 shock absorbers - a set on Flickr
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Old 01-15-2013, 09:00 PM   #25
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Yes, the Monroe kit which I used was specifically for a leaf spring suspension. There was one specifically for a Torflex-style suspension (shown in the second article linked by GPJ) but it was discontinued, leaving only custom solutions.

Airstream adds shocks to their rubber torsion axles, which are currently Dexter Torflex; they have been doing this for decades.

In my case, the top mount hardware holds the shock a specific distance out from the frame, which must be enough to clear the air-assisted shock, which is typically quite large in diameter. The shocks I used are quite large, too, so an air shock might fit.

Quote:
Originally Posted by Donna D. View Post
I don't know air shocks wouldn't work, by why would you?
I don't presume to know the reason for the question, but a couple of possibilities are likely:

Air springing provides adjustability. This allows the suspension to be matched to the load in the vehicle, just as with the rear of a tug that gets air springs pumped up when the trailer tongue load is added; this is rarely of much value in RV trailers (or motorhomes), which are nearly fully loaded all of the time. It also allows ride height to be varied, which can provide the ability to cruise on the highway in a low and stable mode, but creep through rough campsite roads and steep driveway entrances with more clearance. It could even be used to level the trailer side-to-side without levelling blocks (air-suspended motorhomes sometimes do that). At the time of my shock installation, I considered air shocks for these reasons, but have still not done it.

Another reason that many people consider air shocks is to boost a sagging suspension. I would not do this, although another member posted about doing this with coil-over (not air, but the same general idea) shocks.
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