Posted by Portnastorm on
URL: https://forum.mymorbic.uk/Trailer-tp61p281.html

Almost impossible to make a comparison.
Nearly all boat trailers built nowadays use this "rubber" type of suspension unit.

Essentially a rotating asymmetric shaft squeezed between two rubber tubes. As the trailing arm rotates the "rubber" is squished. They come in various ratings with 500kg per pair sounding about right for our size of boat.
I think some manufacturers use a torsion bar axle, not sure what Admiral use.
Tyre pressure is important with such light weight boats, try to run them as low as possible without them overheating. Too hard and the trailer will bounce around all over the place. I find somewhere around 28psi seems to be about right.
The ancient combi trailer under my old Coot had a single transverse leaf spring with no damping and was known to take off going over drain covers, it paid to keep the pressures low.