Dave,

Interested why you feel the current unit needs to be replaced. We put the ray 
system you have on Perception our 33-ll 3 years ago when we upgraded our 
electronics so far it’s performed as well as the Navico wheel pilot it 
replaced, and as Dennis has said they work well! With our short season I could 
not justify the expense and effort to put in the octopus unit, which I really 
wanted to use.

Used the saved funds towards the rest of the electronics upgrade.

Paul
________________________________
From: CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Dave S via CnC-List 
<cnc-list@cnc-list.com>
Sent: Saturday, October 12, 2019 11:13:56 AM
To: C&c Stus List <cnc-list@cnc-list.com>
Cc: Dave S <syerd...@gmail.com>
Subject: Re: Stus-List Raymarine to octopus drive upgrade - UPDATE

Had an exchange (after some effort) with the folks at octopus drives and here’s 
the result:





The boat is a 1985 C&c 33 mkii, and it displaces around 10,000 lbs.  it is 
currently fitted with a 2015 Raymarine ev100 wheelpilot system.  This system 
includes a control unit - the acu-100 - which can provide 7A of current to a 
drive unit.  the acu-100 has provision for a rudder position sensor, but one is 
not currently installed.   It does not have electrical connections for a clutch.
I am not happy with the wheel drive for a variety of reasons and would like to 
install a below-deck linear drive.
Unfortunately, Most larger and especially hydraulic drives require more than 
the 7A current available from the ev-100, meaning I would have to upgrade to a 
larger unit (acu) in addition to acquiring the drive itself and hardware.

It appears however that the octopus RS drive is designed more or less for this 
sort of application, though I do have some questions and have been unable to 
find consistent application information.

-Is this drive compatible with the Raymarine system described above?
No it is not, I believe the EV100 does not have a solenoid/clutch output.. 
though the 7A max is no problem the EV200 would be the minimum requirement
-how does the clutch engage/disengage electrically?  Would assume 12v either 
engages or disengages the clutch, and this could be accomplished with a switch 
if necessary.
Engaged and disengaged by the ECU
Is it even necessary given the “joggle the wheel” clutch disengagement feature 
of the RS drive?  (You could have the clutch engaged by the motor voltage, then 
disengage manually in the absence of that voltage, if I understand correctly)
It still requires a joggle of the wheel to disengage the pin activated by the 
solenoid
- is this the drive your experts would recommend for this application?   Is 
there a better option?
This is the preferred drive for smaller displacement sailboats due to its lower 
amp draw and less wheel resistance compared to the hydraulic linear drives
-Any other advice?
Upgrade to a EV200 or any other pilot with clutch/solenoid output

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