Centerboard downhaul line replacement

[Double Horizon]

If you need to replace the downhaul line it is an easy job. It helps if you or an assistant have thin arms (estimated -- the interior space is only about 3-inches or 80mm wide). The water level inside the centerboard trunk is not anywhere near the top, so you do not need to be concerned about small wakes/waves, assuming you are working in harbor conditions. Total time (using an electric drill-driver on the screws) was about 1 hour:

With boat in the water:
1) Remove Phillips-head screws from beneath table, lift and rotate table to the port side and support it level with a pile of cushions or other objects on the seat. (Remove screws only -- not bolts).
2) Lower centerboard enough to insert a 2x4-inch wood board between the front of the centerboard and the front of the centerboard trunk. Let up the centerboard slowly until the wood board is wedged in place. This board should be about 3 feet (1m) long, and oriented so the 4-inch dimension is fore-aft. This will hold the centerboard down without further effort, so you can access the downhaul attachment point.
3) Your replacement line should be made from low stretch core (spectra or dyneema) with polyester braided cover. Diameter 8mm or 5/16", length 35 feet. Attach replacement line to cockpit end of old line with tape, and pull it through into the centerboard area.
4) Cut old line off the centerboard and tie new line, using a type of knot that will not pull out. (I used a bowline).
5) Lower centerboard further (using new line) to release wood board, then remove wood board to test centerboard operation/clearances.
6) Replace table.

Note: The screws are spaced very close to the centerboard trunk so it will aid access if you have an offset angle drive attachment for your drill/driver.

I was living with a worn and hardened downhaul line because I thought this job would be difficult, but it was easy.
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Larry - DF-1200 Double Horizon

[Mika Harju]

[Double Horizon]

The line I replaced was 8 years old.
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Larry - DF-1200 Double Horizon

[pmg2001]

Larry,

Thanks very helpful guidance; my 9 year old downhaul line had been stiff and occassionally would slip out of its jam cleat, when it split its cover a couple of weeks ago, I used your directions to replace it w/ Endura; your directions were very clear, right on the money and made this job very easy; thanks again