+1 on #2 (Make sure what you connect it the other end to is strong enough. We 
had an old Morgan steer like crazy because the entire hull was flexing! We had 
to glass in a lot of extra stiffening)

I read somewhere about a linear drive that ripped itself off the mounting 
shelf. These things generate quite a bit of power.

Marek

From: Della Barba, Joe via CnC-List 
Sent: Wednesday, September 7, 2016 09:58
To: cnc-list@cnc-list.com 
Cc: Della Barba, Joe 
Subject: Re: Stus-List Octopus on a Landfall 38

When I used to install them I would make a mount that was in the same plane as 
the rudder quadrant. This made the motion of the drive in the horizontal plane 
only. This is IMHO best if you have the room. We would get an aluminum plate 
fabricated that would bolt onto the rudder quadrant if there was no room for an 
additional steering arm for the pilot, which was usually the case. It never 
hurts to do some prototyping and see if you can just hold the thing in place 
and run it through the range of motion it will need. You can hook the power 
leads to a battery or just leave it turned off and allow the helm to drag it 
back and forth. The solenoid should bypass the cylinder when not powered on.

Two more hints:

1.       Make SURE the autopilot limit is programmed so it can’t hit the rudder 
stops. This can usually be programed in when you set it up.

2.       Make sure what you connect it the other end to is strong enough. We 
had an old Morgan steer like crazy because the entire hull was flexing! We had 
to glass in a lot of extra stiffening.

 

Joe

Coquina

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Richard N. 
Bush via CnC-List
Sent: Wednesday, September 07, 2016 08:55
To: cnc-list@cnc-list.com
Cc: Richard N. Bush
Subject: Re: Stus-List Octopus on a Landfall 38

 

I can speak to this...although I have a 37, not a Landfall 38, the issues which 
Fred addresses are the same; pinched stern and zero wiggle room below 
decks...are the same; it was tough getting ours to fit and took several 
attempts and placements before we finally settled on a location; on my boat the 
octopus drive sits in the stern area, just aft of the quarter berth and on a 
slant (I believe the technical term is cattywampus) which doesn't look like it 
will match at all with the radial drive; but once adjusted, it does a marvelous 
job and steers true!   It's a lot of effort but with it not to have the 
mechanism on the wheel. 

 

 

Richard

s/v Bushmark4; C&C 37 CB; Ohio River, Mile 584.4


Richard N. Bush
2950 Breckenridge Lane, Suite Nine
Louisville, Kentucky 40220-1462 
502-584-7255

 

 

-----Original Message-----
From: Frederick G Street via CnC-List <cnc-list@cnc-list.com>
To: cnc-list <cnc-list@cnc-list.com>
Cc: Frederick G Street <f...@postaudio.net>
Sent: Wed, Sep 7, 2016 8:07 am
Subject: Re: Stus-List Octopus on a Landfall 38

Paul — regardless of tiller arm or radial drive (NOT quadrant — thanks, Chuck 
Gilchrest!  :^), the geometry of the drive to the rudder post is the same: you 
need to mount the drive pin X inches from the center of the rudder post.  So 
the angle through which the drive has to rotate is the same.  The biggest issue 
with the Octopus drive on the Landfall 38 (besides the fact that there's no 
room around the steering area) is the fact that the rod that Octopus uses as 
the ram actually extends out past the mounting base when the drive is 
retracted, which limits the mounting locations as the stern pinches in so much 
on the LF38. 

 

The 1212LAM12 (or the version with the remote pump, the 1212LAR12) would be my 
choice, as well; I’ve been looking at this issue of below-deck drives for my 
boat for years, and I really like the Octopus drives.  I’ve sold several to 
people on the list; I just haven’t gotten around to doing it myself.   :^)

 

Anyway, the geometry is fine for the Octopus drive, if you can find the room, 
along with a mechanically-inclined very small person with very long arms to do 
the install…

 

— Fred


Fred Street -- Minneapolis
S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI

 


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