like the look of that .. presumably the ramps are optional as some of the pix are missing them?
Knott do the Avonride beam axles - essentially a 'pair' of rubber torsion units in one beam axle tube .. many do them ... none are bonded - square torsion axle with round rubber rods inserted in the corners of the square axle tube --- I have seen serious overloading (or kerbing) force them around 90 degs
Bramber, who originally came up with the 'flexitor' torsion system units, under license from Alex Moulton, (
https://moultontrust.org/moulton-automotive-suspension ) never did a beam, as their system for bonding the stubs to their unit bodies didn't lend itself to a beam construction and hence always did pairs of units to bolt to a sub chassis/axle beam.
I have never seen a broken Bramber unit in the 'rubber' dept. ... bent arms/stubs/torsion bars, but never seen the bond let go. I used to make trailers for them when they were busy.
Recently bought a s/hand pair, off FB Marketplace, which
@Cyberprog currently has in his custody, 'til we can have a meet up .. didn't think you could get them anymore as Bramber no longer exist
and their 'name' was bought by Peak and a succession of trailer builders/component manufacturers.
Flexitor were the best money could buy.
having searched google I've found them in Oz, under 'Flexiride' though, presumably still under license and says they're still produced in UK, though i don't know by who?? possibly Peak?
the s/h pair I bought looked to me to be the1500-1800kg ..... but with braked hubs attached
and fully adjustable
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The issue with all/any torsion set up with multi axles is overloading of one wheel/axle load by kerb mounting, or excessive loading on one unit only. Rocking beam leaf set up overcomes all of those issues ... but don't know whether these have a rocking beam set up or rely on the user not overloading one axle's loading.
I always fitted rocking beams on twin axle set ups, unless a customer specifically wanted twin torsion beam/unit set ups. (cheaper option, but with a warning on overloading / kerbing /etc.)
Slipper end springs are a form of leaf spring in which one end is fixed and the other slides through an open bracket as the spring flexes under load.
www.peakdynamics.co.uk
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