MarineWarehouse/H-41.2__76307.1722505268

SeaStar H-40 Series Heavy Duty Hynautic Helm Assembly - MW

Name: SeaStar H-40 Series Heavy Duty Hynautic Helm Assembly - MW
Brand: Dometic (MW)
SKU: TEL-H-41.1
Availability: OutOfStock

SKU TEL-H-41.1 MFR Dometic (MW)

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SeaStar Solutions H-40 Series Heavy Duty Hynautic Helm Assembly

SeaStar H-20 Series Heavy Duty Hynautic Helms are for use with SeaStar's rugged 3-line Hynautic steering systems. These heavy duty helms combine one or two bi-directional axial piston pumps with pilot check and make-up check valving. The result is a unit which prevents rudder feedback, is very efficient (even at low RPM), and is immediately adaptable to multi-station use. A wide choice of helm displacements and cylinder configurations make it easy to spec a system which can handle a variety of large boat performance requirements and accommodate most user preferences.

Features:

Heavy-duty helm
Available in different displacements to accommodate most applications
Available with 1" straight shaft or 3/4" tapered
Made with marine-grade materials
Meets or exceeds applicable requirements
Adaptable to multi-station use

Max steering wheel diameter: 47"

Specifications:

Part Number	Displacement	Shaft Style Diameter & Type	Keyway	Integral Valving
H-41	5.50 cu. in.	1" Straight	1/4" Square	Yes
H-41-2	5.50 cu. in.	3/4" Tapered	#9 Woodruff	Yes
H-42	4.00 cu. in.	1" Straight	1/4" Square	Yes
H-42-02	4.00 cu. in.	3/4" Tapered	#9 Woodruff	Yes

SeaStar H-40 Series Hynautic Helm Application Chart

Note: In the chart below, tubing diameter is based on the distance from cylinder to the farthest helm.

For Vessel Sizes Up To	Helm Pump Model	Steering Wheel Turns	Requires Cylinder Model	Tubing Diameter - 40 ft. or less	Tubing Diameter 40 ft. or more	Max Suggested HP
Planing Hulls
40' - 50'	H-42	4.7	HC5351 or HC5357	1/2"	5/8"	750HP
45' - 60'	H-42	7.4	HC5378 or HC5379	1/2"	5/8"	950 HP
45' - 60'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	950 HP
55' - 65'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	1200 HP
to 70'	H-41	10.8	(2x) HC5378 or HC5379	1/2"	5/8"	1500 HP
to 70'	H-41	14.2	(2x) K-8	1/2"	5/8"	1500 HP
Displacement Hulls - Tug Boats, Net Haulers
30' - 35'	H-42	4.7	HC5351 or HC5357	1/2"	5/8"	250 HP
26' - 40'	H-42	7.4	HC5378 or HC5379	1/2"	5/8"	400 HP
26' - 40'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	400 HP
30' - 45'	H-41	5.4	HC5378 or HC 5379	1/2"	5/8"	450 HP
to 50'	H-41	10.8	(2x) HC5378 or HC5379	1/2"	5/8"	500 HP
to 50'	H-41	14.2	(2x) K-8	1/2"	5/8"	500 HP
to 50'	H-41	20.0	(2x) K-9	1/2"	5/8"	500 HP
Displacement Hulls - Work & Pleasure Boats
40' - 45'	H-42	4.7	HC5351 or HC5357	1/2"	5/8"	350 HP
40' - 55'	H-42	7.4	HC5378 or HC5379	1/2"	5/8"	500 HP
40' - 55'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	500 HP
45' - 65'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	650 HP
to 75'	H-41	10.8	(2x) HC5378 or HC5379	1/2"	5/8"	750 HP
to 75'	H-41	14.2	(2x) K-8	1/2"	5/8"	750 HP
Sailboats - Skeg Rudder
40' - 45'	H-42	4.7	HC5351 or HC5357	1/2"	5/8"	-
40' - 52'	H-42	7.4	HC5378 or HC5379	1/2"	5/8"	-
40' - 52'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	-
50' - 60'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	-
to 65'	H-41	10.8	(2x) HC5378 or HC5379	1/2"	5/8"	-
to 65'	H-41	14.2	(2x) K-8	1/2"	5/8"	-
Sailboats - Spade Rudder
40' - 45'	H-42	4.7	HC5351 or HC5357	1/2"	5/8"	-
35' - 46'	H-42	7.4	HC5378 or HC5379	1/2"	5/8"	-
35' - 46'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	-
40' - 50'	H-41	5.4	HC5378 or HC5379	1/2"	5/8"	-
to 60'	H-41	10.8	(2x) HC5378 or HC5379	1/2"	5/8"	-
to 60'	H-41	14.2	(2x) K-8	1/2"	5/8"	-