-
RELIABLE - Patented piston pump technology with only three moving parts
-
TWICE THE POWER - Delivers over twice the hydraulic output per watt of
input
-
HALF THE POWER CONSUMPTION - Accurate ram positioning means fewer course
corrections
-
ADJUSTABLE FLOW RATE - Configure performance to suit your vessel
-
EASY SERVICING - Shut off valves allow removal without draining steering
system
TWICE THE POWER
The unique Octopus piston pump delivers over twice the hydraulic output per
watt of input than a standard hydraulic gear pump.
HALF THE POWER CONSUMPTION
Gear pumps leak oil between the gears, while a piston (such as used in car
engines) does not. This means the piston pump will place the cylinder ram
exactly where it is required, positioning the rudder accurately. This gives far
sharper steering, reducingunnecessary course corrections meaning battery
consumption on Octopus pumps is up to half that of other pumps.
PINPOINT ACCURACY
Leading autopilot manufacturers choose Octopus pumps for their non RFB pilot
systems which do not have a Rudder Feedback unit. Previously, slop in the system
caused by gear leakage meant that a Rudder Feedback unit was necessary to tell
the pilot the exact rudder position. As Octopus pumps will always bring the ram
back to the required position the Rudder Feedback unit is not required, which
also greatly simplifies installation.
SAVE ON INSTALLATION COSTS
A professional installation should always have a method of isolating the pump
from the steering system - Octopus pumps feature inbuilt shut off valves in the
pump manifold.
ADJUSTABLE FLOW RATE
A pump that does not have variable flow (unless dedicated to a range of
cylinders such as our fixed 0.8L pump) will be operating too fast or too slow in
90% of cases. Autopilot manufacturers get around this problem by adjusting the
output to the pump to compensate, which either forces the pump to operate for
longer periods of time which increases power consumption and wear on the parts,
or it will operate at high pressure for short periods of time - also putting
unnecessary strain and wear on the system.
Octopus Variable Flow Reversing Pumps precisely control the speed of the ram,
reducing unnecessary battery consumption, pressure, strain and wear on the
hydraulic system.
Getting the best steering performance for the boat
The flow rate of the pump can be set to get the best hard over time (cylinder
ram speed) for the particular boat. There is a simple equation to calculate the
hard over time:
HARDOVER TIME = CYLINDER (RAM) CAPACITY x 60
FLOW RATE
Example
A boat has a 200cc steering cylinder (ram) and a 12 volt
system. So either the OCTAF1012 or the OCTAF1212 would be suitable (see table
below left). For this example we are using the OCTAF1212 which has a minimum
flow rate of 600cc/min and a maximum flow rate of 1200cc/min:
MIN HARDOVER TIME: 200 x 60 = 20 sec
600
MAX HARDOVER TIME: 200 x 60 = 10 sec
1200
The flow rate on the pump can be adjusted so that the hard over time is
between 10 & 20 seconds - select which is most suitable for the particular boat.
SELECTION GUIDE
|
PART
|
FLOW RATE
|
CYLINDER
|
VOLTAGE
|
MAX
|
AVERAGE
|
No.
|
(Adjustable)
|
RANGE
|
|
CURRENT
|
CURRENT
|
1012
|
500cc - 1L/min
|
150-300cc
(9-18in3)
|
12v
|
19A
|
4–6A
|
1024
|
500cc - 1L/min
|
150-300cc
(9-18in3)
|
24v
|
10A
|
2–3A
|
1212
|
600cc - 1.2L/min
|
180-360cc
(11-22in3)
|
12v
|
19A
|
4–6A
|
1224
|
600cc - 1.2L/min
|
180-360cc
(11-22in3)
|
24v
|
10A
|
2–3A
|
2012
|
1.0 - 2.0L/min
|
245-500cc
(15-30in3)
|
12v
|
22A
|
6–8A
|
2024
|
1.0 - 2.0L/min
|
245-500cc
(15-30in3)
|
24v
|
11A
|
3–4A
|
Download
02MAN00024 Rev New-Installation Guide-Reversing Pumps