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Navstar Windvane Self Steering (Continued)

Stability: The servo rudder is geared to have maximum power when it commences moving the main rudder. As the boat corrects it's course, the incidence of the servo rudder will then adjust itself to steer back to the neutral position, and will pull the wheel or helm back to straight back to a straight ahead position.

Construction:
1)
The tubes are constructed of aluminum grade 6063.

2) The use of Vesconite Hylube bearings on polished 316 stainless steel shafts, mounted on LM5 grade housings results in low      friction, which prevents metal corrosion.
3) The two sets of gears are manufactured from UV stabilized Ascetal.

Item
Material
Dimentions
Length
  Vane Vertical Tube
Aluminium (3mm wall)
46mm
633mm
  Pendulum Tube
Aluminium (6.7mm wall)
51mm
500mm
  Trunnion Shaft
Stainless Steel (Solid)
30mm
210mm
  Pendulum Incidence Shaft
Stainless Steel (Solid)
20mm
620mm
  Push / Pull Shaft
Stainless Steel (Solid)
6mm
820mm


  Construction
Hard Wood
  Size
173mm X 900mm X 21mm
  Maximum Incidence
22 degrees
  Power Arm Top End
400mm Travel (200mm each side)
  Vane - Marine Plywood