North Sails RESOURCES

Streaker Tuning Guide

Streakers are relatively easy boats to set up. There are 3 dimensions which position the mast for the correct rake and

give you a repeatable setting. See the below points to guide you through our Streaker Tuning Guide.

1. This set up is best done on a windless day.

2. Find the ‘Transom datum point’ on your Streaker as shown.

3. Set the boat level.

4. Initially put the mast in the boat, don’t bother attaching shrouds or forestay at this stage. The back of the mast should be touching the aft edge of the deck mast gate.

5. Measure the distance from back of mast at the heel along the hull centreline, over the top of the board- case and aft tank to the Transom datum point. Dimension ‘A’ should be 2885mm +/- 5mm.

6. Adjust the pins/stops on the mast step track as required to get dimension ‘A’.

7. You can now attach the forestay. Do not tension, just enough to take out the slack. The mast should still be touching the aft edge of the mast gate.

8. Hoist your tape measure on the main halyard to the top of the mast. Measure back down the mast to the top of the bottom black sail band. Adjust and cleat the halyard so Dimension ‘B’ is 5095mm and cleat the halyard.

9. With the halyard cleated still as in 8, swing the tape to the transom and measure Dimension ‘C’, top of mast to Transom datum point. 6130mm +/- 20mm. Be careful not to bend the mast when pulling the tape taught.

10. You may have to adjust Dimension ‘A’ to achieve the desired rake of 6130mm but within 40mm of this rake is acceptable. These setting should cover all Streakers, Butler and Beer/Rooster FRP boats and Wood/Composite boats. All Streaker’s will vary slightly with regard to the height of False Floor, height of deck and position of the mast gate. These variables will affect the given rake from one Streaker to another. So you may have to adjust to suit your type of Streaker. The type of mast for these settings, Selden Lambda / Superspar Rigel there is no difference.

Streaker Shroud and Forestay Tension

We recommend you use the multi-stay adjusters by Allen Bros. for both shrouds and forestay. Once you are happy with the mast rake you can then attach the shrouds.

Streaker Superspar Rigel

Take the slack out of the Shroud and put the shroud pin into the stay adjuster that you alone can get the pin in easily. (Don’t apply tension or push the mast sideways to get in a certain hole).

Streaker Selden Lambda

Same as the Rigel but then let the shroud even slacker (up) by one full hole. Assuming that your shrouds are the same length, you may find on some Streakers that the shrouds do not go in the same hole in the shroud adjusters. It is not the rig that is at fault but the hull, which may be as much as 10mm higher on one side to the other. The forestay is set in the same way, pull to take out the slack and put the pin into the hole that is easiest. These shroud and forestay settings are good for most conditions, except you may want to ease the forestay by half a hole in a blow. Check measure the rake Dimension ‘C’ once the shrouds and forestay have been connected.

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