Trailer Sailor Discussion Forum

In theory..

Posted By: Jack, H23.5, F-5, Fl.
Date: 2/6/10 7:59p.m.

Report: outside forum guidelines

In Response To: lighter P-19 Daggerboard (link) (Ron Hoddinott)

It should improve performance. To get the same righting moment using lead located at a lower center of gravity you would use less weight. Less weight means the boat goes faster. When I load a 50 lb reduction into my model, I get .05 knots faster or about 275 feet per hour of sailing. Not a significant distance, but windward ability may also be enhanced with a foil shape. As long as you reduce weight to leave the righting moment the same, the stresses on the boat would be unchanged.

Messages In This Thread

lighter P-19 Daggerboard -- Ron Hoddinott -- 2/6/10 4:38p.m.

IIRC my board weighed about 250lbs. I'd hate to not have that..... -- Westcoaster -- 2/6/10 5:53p.m.

Just a guess... -- Chris J, P19 "Rocky" SLO CA -- 2/6/10 5:55p.m.

Larry Brown used a light board in a P19 -- Harry Gordon, wwp 14 #234, Mtn. View, CA -- 2/6/10 6:28p.m.

Larry Brown's Board -- Ron Hoddinott -- 2/7/10 7:22a.m.

P-19 Board -- Ron -- 2/8/10 4:26a.m.

Mac Davis converted his daggerboard into a swinging keel as shown here... -- Bill Nolen, P-15 Babe -- 2/8/10 6:53a.m.

P-19 with centerboard -- Ron Hoddinott -- 2/8/10 2:44p.m.

Potter Keel -- Ron -- 2/9/10 8:45a.m.

In theory.. -- Jack, H23.5, F-5, Fl. -- 2/6/10 7:59p.m.

Easy solution..... -- Capt Don -- 2/6/10 8:47p.m.

not potter friendly mod and not beachable -- goose p14#164 -- 2/7/10 8:02p.m.

I would think a small.. -- Jack, H23.5, F-5, Fl. -- 2/8/10 5:03p.m.

If i owned a P-19 (fat chance since my bill fold is empty!).... -- Bill Nolen, P-15 Babe -- 2/8/10 6:07p.m.

Larry Brown had a fixed shoal-draft keel on his P15 -- Harry Gordon, wwp 14 #234, Mtn. View, CA -- 2/8/10 7:51p.m.

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