Do-it-yourself repair of a rubber harness trailer suspension

In detail: do-it-yourself repair of a trailer rubber harness suspension from a real master for the site my.housecope.com.

Often, buyers ask themselves how the leaf spring suspension differs from the rubber-harness (torsion bar) suspension, and what kind of suspension to choose a trailer with? First, consider the merits of these two most popular types of suspension for light trailers, trailer springs.

Springs + shock absorbers

Rubber-harness

Smooth running
Better trailer stability on bumps
Dependent: higher "margin of safety"
Repairable even in the field

Independent
More ground clearance
Lower trailer loading height
Maintenance Free
cheap
Easy to install
On the Russian market, there is only a suspension designed specifically for trailers

Now let's look at the disadvantages.

Rubber-harness

Less ground clearance
Higher trailer loading height
Requires serviced (less resource + requires lubrication of friction points)
Specialized spring suspension is more expensive than rubber-harness
Difficult to install / dismantle
The widespread use of springs not intended for light trailers (from Gazelle, Moskvich, etc.): “dangling and jumping” or sagging and rubbing the wings with wheels

Rigid move, vertical buildup ("trembling" on the towbar)
Less "margin of safety"
Not repairable: in case of a breakdown on the road, the trailer is not transportable, a new axle is required

For obvious reasons, there are few people who want to buy a trailer on a rubber-harness suspension, but some models on a spring suspension are simply not produced. Separately, we emphasize that the springs are different for the springs, and the main thing in the springs is not the number of sheets at all. Only high-quality springs of the German company Al-ko are installed on MZSA and Stalker trailers. Their advantages over other springs:

Video (click to play).

1. Loading height is lower and its range is smaller.
2. Short stroke.
3. Special spring design. Because an empty trailer weighs about 250 kg, and a fully loaded trailer 750 kg (i.e. load range 300%), the spring is designed in such a way that an empty trailer uses only one spring, and a loaded trailer uses all 4 (or more). This ensures optimal driving comfort with a trailer at any load.

Road tests: rubber-harness and spring suspension.

on the TONAR trailer, such a suspension, or rather Hmmmmm, there is a torsion bar of 3 harnesses (in the beam)

it all depends on how much you want to carry cargo by weight,

the travel of such suspensions is small

I have two trailers, one mzsa 750 kg the second samopal 1500kg both rubber jute mzsa 3 harnesses in the suspension of the samopal 4 the more harnesses the greater the load capacity but less travel and more rigidity.

The MZSA trailer has a carrying capacity of 500 kg, I actually loaded it in 1500 kg, I carried a lot of sand and gravel, but at least he was hell. trailer by the way already 1993 release.

I personally like this suspension very much, it does not require any maintenance or lubrication. though without a load, the trailer jumps strongly along the road

ALIVE there is also one axis but no amov

spring in practice better and more reliable

ALIVE there is also one axis but no amov

spring in practice better and more reliable

the spring driving performance is better.
at the expense of more reliable like this. springs that break, spring bushings that wear out, shock absorbers are also not eternal.
in rubber jute there are three or four elastic bands in the pipe that work for crushing and everything is reliable. mine with 93 g transported so much that some trucks would envy and that. just changed the bearings on the hubs and that's it.

and the axis there is not one but two axle shafts in one pipe. ZhIV called the suspension correctly “semi-independent”

I have a trailer with 4 rubber bands in a pipe where the axle of the “swing” of the wheel is inserted.
The trailer has a load capacity of 750 kg, but the suspension is crap! The manufacturer went to cut costs. There is nothing metal, no shock absorbers.
Therefore, the articulation of the wheel is scanty, an overload can turn the axle out and the trailer will be one-sided. An empty trailer rides down the road like a bastard!

Three years later, the rubber bands cracked and the trailer “sank”. Frost has done its job.
In total, the trailer is 8 years old, for the last five years I have been using it only for garbage disposal to a landfill. When the plywood at the bottom finally gets wet, I will remake it with springs from Moskvich. I will put the axle from VW Golf-2. back. It is possible and from something else, such as the eight, just from the Golf I got it for free.
———
My conclusion: Rubber-harness torsion bars on a trailer - shit!
sorry for my french.

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Sergiy, I also have a rubber band Image - Do-it-yourself repair of a rubber harness trailer suspension


Jumps just like that Image - Do-it-yourself repair of a rubber harness trailer suspension