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Go Back   SailNet Community > On Board > Gear & Maintenance > How to install autopilot to a rack-and-pinion steering without pedestal-mounted whee
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Thread: How to install autopilot to a rack-and-pinion steering without pedestal-mounted whee Reply to Thread
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Topic Review (Newest First)
04-04-2012 10:34 PM
capnorv
Re: How to install autopilot to a rack-and-pinion steering without pedestal-mounted

Quote:
Originally Posted by adamhopps View Post
Sadao, How did your autopilot work out for you? I also have a Fuji 32 and am currently looking at the CPT Autopilot. It's not as slick, but seems as though it will work with minimal machining or adjustments. Anyone have thoughts on the CPT?
We love our CPT, but our steering is hydraulic. Our last boat was rack and pinion, and it would have worked well on it also. Very adjustable!
04-03-2012 09:22 PM
Capt Len
Re: How to install autopilot to a rack-and-pinion steering without pedestal-mounted

Is there enough shaft under the seat to install a chain sprocket? Depending on auto, the bigger is better for ratio .Small pinion on auto(hopefuly with a dog clutch )connects it.All SS if it's near the compass.Really needs a disconnect unless you always steer by auto or have really strong arms When sailing Thane I lock the wheel by engaging mechanical auto cutch.
04-03-2012 07:42 PM
adamhopps
Re: How to install autopilot to a rack-and-pinion steering without pedestal-mounted

Sadao, How did your autopilot work out for you? I also have a Fuji 32 and am currently looking at the CPT Autopilot. It's not as slick, but seems as though it will work with minimal machining or adjustments. Anyone have thoughts on the CPT?
02-10-2011 03:33 AM
tap The SPX-5 attached to the wheel, so you'll be able to install that. I recall the wheel on the Fuji 32 as needing to turn more than typical. Hopefully the auto pilot it able to get adequate performance out of it.
02-10-2011 02:42 AM
Sadao
Install Raymarine SPX-5 autopilot

To members

The Edson website of traditional steering systems was great help for me to understand the worm gear traditional steering wheel system on the Fuji 32 Ketch.

I am not actually the ower of the yacht. English is the second language for us. The owner was not confident to inquire his issue. So I did instead of him.

However, he is confident to install the autopilot Raymarine SPX-5 on the yacht. Only issue is the drive motor of the autopilot has to be installed aft direction instead of bow direction indicated in the manual. This is still made us wonder the pilot controller display correctly corresponding to the rotation of wheel.

We will inform later after the installation completed.

Please forgive misspelling or grammatical error in the writing.

Sadao
02-09-2011 10:58 PM
tap You're Fuji 32's worm drive is quite different from a normal steering system. A typical wheel system system has a cable from the wheel to the quadrant on the rudder. If the wheel turns, the cables moves and the quadrant the rudder turn. If the rudder and the quadrant attached to it turn, the cable moves the wheel turns. It goes both ways.

The worm drive on your Fuji 32 is different. Turning the wheel turns a worm gear that moves a lever that turns a disk attached to the rudder shaft. Trying to turn the rudder will try to turn the disk which will push on the lever and that won't be able to move the worm gear. It only goes one way.

Check Edson's website, they have some nice pictures of each system.

Any kind of autopilot that's designed to move the quadrant won't work on a worm gear steering system.
02-09-2011 02:22 AM
Sadao Tanks for suggesions.
I misunderstood that the steering mechanism of my Fuji 32 ketch is warm gear type not rack-and-pinion gear type.

Only differ from the standard pedestal mounted wheel sytem is that this traditional steering wheel's shaft leads aft.
I asuume that the reverse the wiring connection of the Drive unit motor will get correct indication on an insturment panel (the pilot controller).

Thanks
Sadao
02-07-2011 09:52 PM
capnorv Thats how I did it. Thought I'd have to reverse compass, but didn't
02-07-2011 09:04 PM
CapnRon47
Reverse Wheel Pilot

I think Raymarine already solved your problem, the wiring instructions are such that most people usually hook them up so they operate backwards. To reverse operation you only need to switch two wires, it is a matter of trial and error anyway.


02-07-2011 07:23 PM
Sadao Thanks for advices.
The yacht is Fuji Ketch 32. I think the Raymarine XmartPilot X-5 autopilot I purchsed can be installed on the yacht's rack-and-pinion steering wheel. The problem is that the shaft of the wheel come from aft. I have to install the motor tube of the X-5 autopilot to aft direction. My concern is the instrumets of the X-5 will indicate port or starborad correspond to the direction fo the wheel roated.
Sadao
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