steeringsystems
Steering wheels
Custom made, we offer three different models of high quality steering wheels. They can be made in aluminium, titanium or stainless steel with a single or a double row of spokes.
Any other design can be studied by our design office.
Option: sheathed steering wheels
Titanium
Aluminium
6 colors available
Pedestals
Our aluminium pedestals are custom made with a white paint finish. It’s possible to deliver them equipped with a steering head, 2 articulated blocks and a chain with rope connections.
Our Vinylester pedestals are up to 1800 mm long with either white gel coat or epoxy primer finish. The glass/epoxy pedestals are delivered with an epoxy primer finish. It is possible to deliver them equipped with steering head, 2 articulated blocks and a chain with rope
Steering heads
With fixing plate on pedestal
Our stainless steel steering heads are adjustable to the pedestal thickness. They spin in sealed stainless steel ball bearings. They fit 11 to 17 teeth or more stainless steel sprockets, defined according to the rim load and the number of turns requested. They are available for 5/8”, 3/4” or 1” chains.
Option: Clutching by axial handle
Helium
They are compact and lightweight aluminium and titanium steering heads. Their weight is less than 1kg. They are available with 11 to 17 teeth 5/8” sprockets.
With support plate
They are compact steering heads custom made to be easily integrated into pedestals thanks to their support plate. They get the same technical characteristics as the steering heads with plate.
Option: Clutching by axial handle.
We can adapt the steering shaft to all wheel connection: cone or plate.
Wheel brakes
Our radial wheel brakes are set on the side of the pedestals. The clamping is activated by screwing in a knurled knob.
Gearboxes
2 speed + neutral transmission
Assembled in a stiff aluminium frame, our gearboxes are fully reliable. The primary shaft with conical or plate connection match the wheel hub. The gear ratio is given by 3 gears of 1 or 3/4’’ sprockets. They are adapted to the rim loads and to the number of turns requested. The neutral position disengages the wheels.
Reducers
They are space-saving gearboxes with one steering head. The gear ratio is set to the needs, depending on the rim load and the number of turns requested. The connection to the wheel hub is made by cone or plate. These gearboxes only work with PUSH/PULL wires.
Blocks
The Ertalyte sheaves can handle significant load by rotating on 2 sealed stainless steel ball bearings, without maintenance. They are available as simple or double blocks, foot blocks, articulated blocks or in carbon box to be laminated to a bulkhead.
Simple
Foot blocks
Articulated
Chains - Vectran steering ropes – Turnbuckles
Chains
5/8″, 3/4″, 1″ pitch stainless steel chains are available. The shaft length depends on the pedestal. The connection is done by stainless steel lug and quick links for stainless steel cables (not supplied). Connection is also possible by aluminium lugs and quick links with steering ropes.
Turnbuckles
The stainless steel turnbuckles are used to trim the tension of the lines.
Vectran steering ropes
The Vectran Dyneema lines elongate less than the stainless steel wires while being lighter and silent.
Aluminium quadrants
Lenticulars
They are used for quadrants with large radius. The structure of this quadrant is welded and covered by protection plates. They have 2 or 4 line tracks. They are anodized or white painted depending on the size.
Their hub is machined to match the rudder stock section. The steering lines are connected by eye bolts.
Crossbows
Aluminium grade is either 5083 or 6082. They are used for quadrants up to 400 mm radius with 2 line tracks. This quadrants allow easy fastening of pins for drag links or autopilot actuators.
The hub is manufactured according to the rudder stock section. It is anodized. The lines are connected to eye bolts.
Disconnecting units
The disconnect is an electrically controlled system. It allows the helmsman to release the resistance of the autopilot actuator when he wishes to get the best fingertips steering provided by JP3 mechanical steering system. It is a disengageable tiller fixed to the rudder stock. The autopilot actuator is fixed to this disengageable tiller.
In the disengaged position, the autopilot can’t drive the rudder stock and in the engaged position, the autopilot drives the rudder stock. Shifting lock/unlock positions is made by an electric actuator installed into the disconnect.
Cars and tracks
They are simple and light alternative to the quadrants for a twin rudder boat or a multihull. The ANTAL cars are directly connected to the steering wheels by ropes connections. They drives 2 link bars acting directly on the rudder tillers.
Toe in cars allow to vary the parallelism of the rudders.
Standart cars
Toe-in cars
Link bars
Our link bars are made of aluminium or carbon. The aluminium and fitting glued to the ends are threaded to fit stainless steel uniballs with male threads, right pitch on one end and left pitch on the other one.
To better trim the rudders parallelism, we provide female stainless steel inner balls fastened on threaded rods. These 90mm right/left hand threaded rods give a setting of approximately 40 to 50mm.
The link bars are supplied with an 100mm extra length for on-site adjustment.
Aluminium
Carbon
Ertalyte cones
Aluminium cones
Male ball joint
Female ball joint
Tillers
The tillers are made of aluminium and are custom-designed. The spacing is calculated for a better rim load at the wheels and guarantee the best possible steering sensations. They can be made lighter for boats when performance is wanted.
They are provided with stainless steel pins to connect the linking bars and/or the autopilot actuator. Placed on a dummy shaft, they can be simple, double or triple.
Dummy shafts
In aluminium or stainless steel, the dummy shafts are custom-designed. They are drived by self-aligning bearings with plain or needle innerball or by lightweight bearings with needles depending on their length. They are used on twin rudder boats with steering tiller or on multihulls.
Washers
The washers are made of Ertacetal to reduce frictions. All diameters are available on request if no standard would fit.
Tiller heads
In aluminium, the tiller heads are fixed on the rudder stocks or the stainless steel or aluminium dummy shafts.
We can deliver them with or without stops. If stops are required, they are perfectly adapted to Type 1 bearings reference 10.13.xx SPI whose stops are integrated.
Rudder trunks
In epoxy, aluminium or 3D printing, the rudder trunks are glued directly to the bearings or to an adaptor ring.
They watertight the lower bearings when they are under the waterline or less than 200mm above. They can be equipped with lip seals and can support the rudder weight thanks to a locking ring or one part of the steering system.
Emergency tillers
Custom designed, the emergency tillers are mandatory on boats with steering wheels. They are plugged directly to the top of the rudder stocks.
Muscadet
JP3 has designed and manufacture a rudder especially adapted to Muscadet whatever the generation. We supply other parts for:
- Rudder Pintles and gudgeons
- Backstay and shroud chainplates
- Organizers
- Hauling out eyes
- Keel studs (click here to report dimension)
other items below
