I am thinking of getting an electric winch fitted for lowering and raising the rib up and down slipways.
I have seen a few winchs around on the web but wanted to see if others recommend a particular sort of winch or ones to steer clear of
my boat and trailer weighs at most 1800 kg but probably nearer 1500kg lets say
I am not sure what the average gradiant is on a slipway, but i wanted to calculate the approximate load on a winch if pulling the boat and trailer up an average slipway. At a guess i would expect the average slipway is between 10 and 40 degrees.
does anyone out there have a rough calculation that shows what effort or equivilent weight a 1800 kg boat and trailer would be when being dragged up a 10 20 30 and 40 degree slope
not sure what cooefficient of drag to use for the wheels but i suspect it should be minimal
schoooooooooooool seems to have been a long time ago and i think i bunked off this lesson
any guidance from experts out there would be appreciated
i am trying to gauge what size winch is suitable and calculate the winch speed at different loads to determine the suitable item
here is one i have found so far which would easily do the job i suspect