Originally Posted by Quayside
My 6.6m/850kg RIB is under construction. It will be kept ashore on a concrete slipway and launched into salt water, for each occasion it will be used, using an electric powered winch (i.e. not using a vehicle). I need a trolley or trailer for this purpose - I do not need it to be capable of use on a road. The trolley will therefore move up and down the slipway on the axle wheels and the jockey wheel. The boat manufacturer has proposed an SBS 1800EL road trailer.
Does anyone have any suggestions or comments?
Seems like a really bad spec for your application if it will genuinely never be towed by a vehicle or go on road.
Brakes unnecessary and just going to rust and seize giving you a headache.
A tow hitch you will never use makes it easier to nick.
It's over specced weight wise for what you want, seems unnecessary for a launch trolley, although possibly a positive on road.
The jockey wheel is crap for what you are planning.
If being used only on smooth surfaces I'd lean towards smaller wheels as can get boat deeper for less winch length. Again on road big wheels have benefits but on a nice slipway not the same.
Not sure if the 1800el is double axle or not, but if you are pushing around a compound (assuming you can't leave at the very top of the slip) then two axles will make turning hard work.
Personally I'd investigate made for the job rather than from the catalogue your boat builder happens to have a deal with. It should be no more expensive (possibly a good bit cheaper) and actually better for your very specific job. Road trailers are a stack of compromises.