Agreed — rule of thumb is to size the autopilot so that its rating is at least 1-1/2 times the displacement of the vessel; Raymarine says to add 20%, but that’s not conservative enough in my opinion. So for a LF38 at a published displacement of 16,000 lbs (which means in real life, it’s more like 19,000 lbs loaded or more…), you’d want the autopilot to be rated for at least 24,000 lbs; closer to 30,000 lbs would be better. The Octopus drive is rated for 33,000 lbs, and the ACU-200 course computer will handle the current for that drive under all conditions you’re likely to encounter. That’s a much better safety margin than the SPX-5 which is rated at 16,500 lbs max displacement.
Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( On Apr 16, 2014, at 10:23 AM, Joel Aronson <joel.aron...@gmail.com> wrote: > Paul > > The X-5 wheelpilot is barely adequate for a 35/3. > > Joel > > > On Wed, Apr 16, 2014 at 11:17 AM, Paul Eugenio <dre...@gmail.com> wrote: > Frank, > > I do not have an autopilot yet installed on my 38LF. I do have a Raymarine > SPX-5 wheel autopilot which I had installed on my 29-1(it is now currently at > Raymarine getting the computer repaired). A 38LF is right at the max > displacement limit for a SPX-5, and I was thinking about giving it a try, but > I am strongly thinking about following Fred’s recommendation in getting the > EV-200 Sail paired with an Octopus 1212LAM12 hydraulic linear drive. > > > Paul
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