SPECIFICATIONS & BRACKETS
MATERIALS
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Shafts, axles and fastenings |
316 (EN58J) stainless steel, solid stainless rudder shaft in stainless outer tube |
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Castings |
LM5 (AIMg5) anodized aluminum alloy and silicon bronze |
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Bearings |
Acetal (Delrin). Nylon ball race on rudder shaft. Teflon washers |
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Rudder |
High strength nylon casting. Tapered NACA profile |
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Wind Vane |
Reinforced nylon cloth (ripstop) on anodized alloy tube frame |
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Course control |
4in. (100mm) worm gear |
DIMENSIONS
RUDDER SHAFT LENGTH The HYDROVANE shaft length is chosen according to the height of the stern. The table below shows the required shaft length, S, M, L, X, or longer, assuming that for free vane movement, the stern rail is not more than 24 inches (610 mm) above the deck and does not project aft of the stern. Otherwise, the next longer shaft may be needed.
MOUNTING BRACKETS – H (hinge), E (elbow - single strut) and A (double strut)
'H' ( HINGED) BRACKET - MUST BE ONE 'H' BRACKET - Every installation requires two brackets, one of which must be an 'H' bracket. The 'H' bracket is located at about the closest point from the shaft to the stern.
sp; WARNING - BOLT TIGHTENING SEQUENCE: A - B
HALLBERG RASSY 352 H/H - 2 'H' Brackets SINGLE STRUT/TUBE 'E' (ELBOW) BRACKET - If the reach from the shaft to the transom for the second bracket is less than 20 in. (50 cm.) then the 'E' bracket can be used. It has a single strut/tube that will be cut to the appropriate length.
WARNING - BOLT TIGHTENING SEQUENCE: A - B
VICTORIA 34 H/E - Upper 'H' and Lower 'E' DOUBLE STRUT/TUBE 'A' BRACKET - For installations where the distance required is at least 16 in. (40 cm.) the two strut/tube 'A bracket may be used. Although expensive, the 'A' solves all strength and positioning issues. The two struts of the 'A' bracket are V shaped at an angle of 40 degrees. The arms may be angled up or down, on the same plane or otherwise and the flanges fully rotate to be flush with any surface.
WARNING - BOLT TIGHTENING SEQUENCE: A - B - C
OCEANIC 46 A/H - Upper 'A' and Lower 'H'
HALLBERG RASSY 40
Sweden Yacht 45 - 30 in. offset! Note - use of PVC pipe as dummy shaft and use of tape for positioning - struts not on same plane
FLEXIBILITY IN POSITIONING - The only critical position required is to have the shaft vertical. The brackets are merely holders that, when tightened, clamp the shaft in place. There is considerable flexibility in determining the location of the brackets which is most helpful when dealing with surprise obstructions on the inside of the transom. Within certain maximum and minimum requirements the location of the brackets on the shaft may be moved up or down. See PARTS tab for detailed pictures of
the brackets. See INSTRUCTIONS and TIPS tabs for complete installation and other instructions. TIMBER PADS - A timber pad is a piece of non-ferrous material ( often teak wood or a synthetic like Micararta is used) that is fitted between the HYDROVANE bracket flanges and the transom. The timber pad is fashioned or shaped to pick up any contour differences between the flat flange face and the transom. For metal hulls it is always wise to insert a timber pad even when the two surfaces are flat or flush with each other. The purpose is to eliminate any potential for electrolysis - which can occur even between apparently like metals - eg - the HYDROVANE aluminum flange and an aluminum hull. The HYDROVANE castings are all made of a very high quality magnesium alloy - probably different metal than an aluminum hull.
TIMBER PAD FOR 'E' BRACKET MAXs, MINs AND MEASUREMENT TIPS
MEASUREMENTS In most cases we need only the A, B, C and D measurements - see schematic below If there are any interfering obstacles then we need those relevant measurements:
Scoops or Steps of Swim Platforms - We want to draw the side profile at that point where the Hydrovane will be fitted - From the tip of the transom measure both the vertical height and the lateral distance forward for each step. MEASUREMENT SCHEMATIC
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MEASUREMENT WORKSHEET.
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