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Old 04-17-2019, 03:21 AM   #1 (permalink)
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Slipper vs shackles, and equalizers..

I'm having a custom 7x16 narrow track enclosed trailer built for the yukon highway, so I can specify axles etc.. Since I'm installing two 50 gallon water tanks and the trailer will be packed with as much glamping gear I can stuff in plus a few motorcycles, Ive decided to over build and install two 7k 8 lug axles, on 3500# springs. No torsion axles or independent please..

That's as much as Ive decided so far, and now need to pick which style or manufacturer of leafs I want.

Someone suggested slipper springs and I see redline makes a slipper equalizer kit, but trailerguys.com suggests shackles are better.

And others have suggested dampened equalizers like the LCI Equa Flex or CRE3000 by morryde.. Lippert makes another called the Centerpoint equalizer which uses air bags instead of rubber.

What Tandem leaf spring suspension would you suggest?
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Last edited by rerod; 04-17-2019 at 03:34 AM.
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Old 04-17-2019, 04:36 AM   #2 (permalink)
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If you really like the fancy pants air spring setup just build a camelback style suspension or some variant thereof like you typically find on the rear of medium and heavy trucks that are expected to see lots of use on uneven ground. It's the same principal of operation but with a leaf spring to provide the spring force instead of an air bag.
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Old 04-17-2019, 07:00 AM   #3 (permalink)
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I have shackles on my equipment trailer and I’ll be converting it to slipper springs as soon as I have time. I literally replace the hardware and bushings yearly and it’s always pounded right out and it might see 20,000 km a year.

I’ll do slipper springs with proper rubber bushings instead of the little plastic sleeve garbage. Less moving parts should last longer I hope.
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Old 04-17-2019, 07:52 AM   #4 (permalink)
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Originally Posted by arse_sidewards View Post
If you really like the fancy pants air spring setup just build a camelback style suspension or some variant thereof like you typically find on the rear of medium and heavy trucks that are expected to see lots of use on uneven ground. It's the same principal of operation but with a leaf spring to provide the spring force instead of an air bag.
Ive heard it called walking beam but either way Id agree. Problem is I can only find The Timbrin Tandam Silent Ride unless I look in australia. Also, I want to use over rated axles and the Timbrin wont allow that. Plus, the bushings for the tandem Silent Ride are going to take hella twisting motion if the left front and right rear drops in a rut at the same time. That's allot of twisting on the control arms when one arm is up and other down on same axle.. The design looks vulnerable to traveling over a obstacle that's not parallel to the axles, but its running two straight axles like I want..

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I have shackles on my equipment trailer and I’ll be converting it to slipper springs as soon as I have time. I literally replace the hardware and bushings yearly and it’s always pounded right out and it might see 20,000 km a year.

I’ll do slipper springs with proper rubber bushings instead of the little plastic sleeve garbage. Less moving parts should last longer I hope.
Thanks wahlstrom.. Is there a brand or kit your looking at?
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Old 04-17-2019, 12:14 PM   #5 (permalink)
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Thanks wahlstrom.. Is there a brand or kit your looking at?
Nothing in particular, just whatever my local trailer shop carries. Can’t go wrong with anything name brand though as far as Dexter/Standens/Timbren etc.
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Old 04-20-2019, 11:45 AM   #6 (permalink)
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On rough terrain I think I’d run slippers. Less wear parts and you won’t have to worry about inverting a shackle and bending a spring when “flexing it out” over ruts and things. Going into the boonies on rough roads, I’d want the most dirt simple setup possible, this would exclude anything with vulcanized rubber parts or an excess of moving parts.
Travis..
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Old 04-20-2019, 08:10 PM   #7 (permalink)
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Originally Posted by wahlstrom1 View Post
I have shackles on my equipment trailer and I’ll be converting it to slipper springs as soon as I have time. I literally replace the hardware and bushings yearly and it’s always pounded right out and it might see 20,000 km a year.

I’ll do slipper springs with proper rubber bushings instead of the little plastic sleeve garbage. Less moving parts should last longer I hope.
after wearing through 3 different slipper pads on two different trailers im currently converting one over to shackles

these trailers live their lives 75% on rough dirt roads

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Old 04-20-2019, 08:41 PM   #8 (permalink)
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Get a heavy duty shackle kit that has the brass spring bushings, half inch thick shackles and all the bolts and equalizers are drilled for greasing.
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Old 04-20-2019, 08:43 PM   #9 (permalink)
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Get a heavy duty shackle kit that has the brass spring bushings, half inch thick shackles and all the bolts and equalizers are drilled for greasing.
got a link?
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Old 04-20-2019, 08:48 PM   #10 (permalink)
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got a link?
https://www.etrailer.com/Trailer-Lea...71-449-00.html
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Old 04-20-2019, 10:14 PM   #11 (permalink)
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I had the full brass bushing and greasable pin set, still using the heavy shackles. They were wiped out in a year too...

For the time being I’ll be ordering RuffStuff’s fix-it washers to get all my mounts back into useable condition and replace the shitty plastic sleeves again.
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