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[CA] [CA11] Which Evo for Simrad RPU300 hydraulic pump
10-13-18, 06:48 PM (This post was last modified: 10-16-18 12:51 PM by Chuck - Raymarine - Moderator.)
Post: #1
[CA11] Which Evo for Simrad RPU300 hydraulic pump
I currently have a Simrad autopilot that I’d like to upgrade to Raymarine but keep the existing pump. I can’t determine from the charts whether I need an ACu-300 or 400. The RPU300 stats are:

Hydraulic Ram Capacity: 17.7-58.5cu.in. (290-960cc)
Maximum Pressure: 60 BAR
Dimensions: 9 1/16"L x 3 15/16"W x 4 13/16"H
Amperage: 3.5-10A @ 24V
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10-16-18, 12:52 PM
Post: #2
RE: [CA11] Which Evo for Simrad RPU300 hydraulic pump
Welcome to the Raymarine Forum Tim,

While it is possible that the ACU-400 may be used with the specified third party drive unit, I will need to know the capacity of the vessel's steering ram in order to properly advise.
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11-04-18, 11:47 AM (This post was last modified: 11-05-18 08:57 AM by Chuck - Raymarine - Moderator.)
Post: #3
RE: [CA11] Which Evo for Simrad RPU300 hydraulic pump
Hi,

The steering arm is a Macron MC 80x9 which appears to have 21.15 Cu in displacement. Is that the spec you need? I've attached the spec sheet.

Thanks!
Tim
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11-05-18, 09:07 AM
Post: #4
RE: [CA11] Which Evo for Simrad RPU300 hydraulic pump
Tim,

Given the capacity of the steering ram an ACU-400 would be required for the Evolution autopilot system.
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