Perhaps i'm i'm reading this completely wrong...Paul B wrote: ↑21 Aug 2018, 20:56Aye well, spend your pound well, my boat trailer is from a respected manufacturer, like wise the units for my box trailer came from Towsure, another well respected company, I’m sure they don’t sell crap either
But as i see it, i was responding to your quote of "let’s face it the units are pretty crude in design and operation"
Then you say you have them on your trailers. You're quoting they're from a respectabler manufacturer or reseller... so what's the issue then ?
Do yours work correctly or not ?
My humble opinion is.. I find them to be more than suitable for the job, As i said earlier, you buy the correct trailer with the correct suspension units for your required load and trailer design.
All the rubber mount suspension units are fitted world wide on most trailers, caravans and such. Ask yourself in a clear mind set.. "do you really think these manufacturers would use such units if they weren't upto the job?
I think not
Yes, the rubbers will swell with age as Paul was stating in the early part of the post, The more they swell the more they'll nip the outer casing and squeeze the inner - that'll stop them working as well... Hence why they're a replacable service item.
Going back to the O/P - his suspension units are showing no movement... That would suggest they are old, perished/swollen and need replacing. Simple fix, Replace them with suitably weighted units... job done!