Originally Posted by malbow
Does anyone have experience with Raymarine ST2000 or Simrad TP32 on a heavy displacement yacht? my Alden-designed timber cutter
displaces just over 9 tonnes. my worry is the pilot may wear out very quickly.
Sent from my iPad
using Cruisers Sailing Forum
I have the ST2000... the problem isnt whether the tillerpilot will wear out quickly, but whether your rudder
is balanced enough on that size of boat to make the ST2000 a candidate for the task.
the ST2000 is a strong unit but it is designed for lighter displacement boats which usually never have a heavy helm
when sailed correctly.
it has about an 80lb push/pull limit, but as with anything, the lighter the task, the longer it will last.
the unit connects to the tiller at 18" from the rudder
shaft pivot. and it only has about 4.5" of travel either way from center (8-9" port to starboard)
how hard is it to control the rudder at that point on the tiller?
the other thing to consider, as they did when they designed the unit, is the yaw time of the boat
a heavier boat in waves will yaw slower than a light boat.
this is adjustable to some extent with a lighter boat with quicker yaw times but on a heavy boat that is slower, the unit may not be able to be adjusted enough.
and then it depends on how you are going to use the unit...are you trying to control the boat in heavy seas, or just motoring across a flat calm passage
on a motor passage
, in light to choppy conditions, i wouldnt have a concern at all as to whether or not it would work, but when the seas get a bit stronger the concerns may change.
so.. if you have a light helm
, it would be worth a try for the cost difference between it and the "proper" sized unit.
and if you do try the ST2000 over the TP32 unit, you will quickly get most of your money
back if you decide it doesnt work on your boat, as they sell quickly... so it will be a 50-75 dollar gamble just to see if it works