Shocks?

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Re: Shocks?

Postby RJ Howell » Wed Oct 02, 2019 7:01 am

tony.latham wrote:I think you are chasing a problem that doesn’t exist. Somewhere on Dexter’s site it shows the up and down travel distance of their Torflex axles.

T


Did some serious research this morning (slow morning) and it looks like you're right (again). I chasing an issue that doesn't exist.. My mind always looked at the cords and thought while rock crawling (all weight on a tire) the center tube could roll past the cords leaving you with one heck of a situation. Everything I read so far shows that as next to impossible (or taking so much more effort).

Thank you for your patience and assistance.
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Re: Shocks?

Postby ArkansasDon » Wed Feb 05, 2020 5:42 am

I changed out leaf springs & added shocks, the shock absorbers make for a softer more controlled ride, slowing axle articulation down keep the tires planted to the ground longer. My trailer tows nicely on hwy & rough off road use. The wife & I do a lot of dispersed camping 95% were 5% is spent win public RV grounds with our son & his family.
I removed the original stock factory leaf springs & hangers, kept the 3500 Dexter Axle. I added long 31" leaf springs & hangers. Theirs many advantages by adding longer leaf springs to the trailer: the trailer can't react as quickly to a bumps, it spreads the load more out evenly from the axle.
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2019 Runaway Range Runner Offroad Build
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Re: Shocks?

Postby working on it » Wed Feb 05, 2020 4:44 pm

* While researching all about trailer axles prior to replacing the "too-small" weight-capacity axle on my TTT, back in 2014, I tried to discover if torsion axles had an internal "stop" to prevent over-flexing and possible damage to fender, frame, and especially the rubber rods inside the axle tube. Only on the Inland RV/Airstream site did I find any reference to "stops" in any torsion-axle website. https://inlandrv.com/dura-torque-axle-article/

* I had envisioned some off-road travel for my trailer, sometime in the future, so I wanted over-travel of the wheels to be compensated-for, or eliminated, due to past experience with really bad roads/trailer interaction. Since I couldn't find any reference to other torsion axle manufacturers' over-travel prevention measures (and the expense of making my own, if not found), I opted to use a leaf-spring axle instead, with a type of over-travel-prevention device that I'd used on several vehicles over the years, cushioning bumpstops (various durometer rubber types, and construction types had been used).

* The axle I chose had to be about 3500 lbs rated, with brakes installed, and at that time I found the spring-type to be about $150 less than torsion, and $250 less than the equivalent Timbren axle-less axle. I already preferred the leaf spring axle for easier parts sourcing and ready availability, so that was what I went with. For around what a torsion axle alone would've cost me, I was able to install all-new axle/springs/hardware + my homemade shock absorbing active bumpstop + the welding machine I made it with (with additional steel frame reinforcements, too). An equivalent Timbren set-up would've been double that???

* The benefit of making my own suspension from individual components is that I could easily (and cheaply) replace any if it failed to function as I wished. The springs are standard double-eye 25.25" size, and come in available weight-ratings from 1500-7000 lbs per pair (I bought 3000 lb per pair, since I knew I'd need nearly that capacity, eventually), and cost $50 per pair, then. The key to making them work correctly (no sag or no bounce, either) on the road, was by tailoring the Daystar progressive bumpstops to precisely fit between axle and frame, with adaptive cushioning since they are hollowed-out. If they needed to have more "give", then I could sever an inner tension for that, as is, they work well, and haven't needed any alteration.

*
Timbren Active Off-Road Bumpstops vs homemade version, in lieu of shock absorbers.jpg
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2013 HHRv "squareback/squaredrop", rugged, 4x8 TTT, 2220 lbs
  • *3500 lb Dexter EZ-Lube braked axle, 3000 lb.springs, active-progressive bumpstop suspension
  • *27 x 8.5-14LT AT tires (x 3) *Weight Distribution system for single-beam tongue
  • *100% LED's & GFCI outlets, 3x fans, AM/FM/CD/Aux. *A/C & heat, Optima AGM, inverter & charger(s)
  • *extended-run, on-board, 2500w generator *Coleman dual-fuel stove & lantern, Ikea grill, vintage skillet
  • *zinc/stainless front & side racks *98"L x 6" diameter rod & reel carrier tube on roof
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