SLEIPNER
ø 212mm 445m m Waterline Minimu m 225mm ID. ø300mm OD. ø320mm
Boats pivot point Thruster installation B Thruster installation A B = 10,0m A = 11,0m
Waterline Min 1/2Ø 3/4Ø OK 1/1 Ø Good 30-35 cm Other factors get full priority Min 1/3Ø Ø Waterline at high speed Possible installation area Min 1/3Ø The tunnel should be as far forward as possible
10-15% of tunnel diameter 10-15% of tunnel diameter Tunnel diameter here: ø 185mm r = 10% of tunnel diameter here: r = 18,5mm r = 10% of tunnel diameter here: r = 18,5mm
R=0,1Xt.D. Radius = 10% of tunnel diameter R=0,1Xt.D. Radius = 10% of tunnel diameter R=0,1Xt.D. Radius = 10% of tunnel diameter
Possible tunnel installation in "standard" hull. Not a very good position this far back as you get a very small leverage to turn the boat. You might then need to use a larger thruster with a larger tunnel diameter to get a sufficient thrust, and this will have to be fitted even further back The correct and best way is to fit the tunnel on this type of sailboat, is to fit it in the correct position by "cutting it into the bottom of the boat, making it a part of the bottom. Then you build a "bulb" around it both to strengthen the instllation / hull and to make a smooth waterflow. Waterline Minimum tunnel depth With the tunnel position this far aft, the tunnel must be very long and this creates problems for the installation and reduces the thrust. With the tunnel in the correct position for good thrust efficiency and position this far aft, the tunnel must be very long and this creates problems for the installation and reduces the thrust. Some space is necessary underneath the tunnel to alow access for moulding. The point of minimum hull area underneath the tunnel is not valid when the tunnel is this long. No space necessary underneath the tunnel for installation as the moulding is done from the outside. However, if the tunnel is less than 4 x diameter, make the bulb so that you get atleast 1/4 x diameter to the lowest part of the bulb.
Tunell diameter Insert / plug in hull mould to make easy and technically perfect tunnel installation Radius = Tunnel diameter x 0,1 a1 a2 b b a1 a2 a1 a2 b
PP Å ÃPP Å 7811(/6 &(175(/,1( %2$76 &(175(/,1( ÃPP Å
WATERLINE Minimum A x 0,25 Example 90mm ææ5+&' ææ219'4 Waterline to tunnel center = A Example 350mm
Key in driveshaft Driveshaft from gearhouse Set screw Flexible-coupling Keyway in flexiblecoupling
88mm )RUÃVDIHW\ÃWKHÃPRWRUÃRIÃWKHÃ6LGHSRZHUÃÃÉÃ+SÃ7ZLQÃPXVWÃEHÃIDVWHQHGÃLQÃDOO LQVWDOODWLRQÃSRVLWLRQVÃZLWKÃWKHÃLQFOXGHGÃPRWRUVXSSRUW 1. Fit the motor to the already fitted motorbracket on the tunnel. 2. Fasten the support to a bulkhead / the boat in a correct position to support the motor firmly. The support can be fastened anywere on the motor as long as it does not interfer with the cables, but we do advice to fit it on the top as shown in these drawings. 3. Be sure to use the included rubber strip between the support / support strap and the motor. ææ5+&' ææ219'4 ÃRUÃ+S 7ZLQ S + 4 ' Ã LQ ' U Z 9ÃR 7 +& 1 æ5 æ2 88mm 212mm - LEAD + LEAD Lead ends must be isolated $ ' ' $
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Pin 1 Black control power Pin 2 Red direction output Pin 3 Grey direction output Pin 1 Black control power Pin 2 Red direction output Pin 3 Grey direction output