I'm with SM on this one. The right spring rate for the load is huge. Also, the free end of the spring sliding acts as a friction damper.
I have an ancient and rather small little-dude trailer with a big sailbox for my F18. I think the trailer might have originally been design for an H16. Was initially a bit concerned about overloading it, but in reality its about perfect and its the smoothest pulling trailer I've ever owned. I attribute this to the springs being "just right" for the load. I did upgrade from 8" to 12" wheels which helped at highway speeds.
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Jeff R
'88 H18 "Jolly Mon"
'10 C2 USA1193
NE IN / SE MI
cramsailing.com--