Finding cog

[GatorsFan]

This may or may not be a stupid question but im having troubles finding the answer to it. What is the best way to go about finding the cog for a deep vee like the delta force pirate 35?

[Old Sloppy]

I can not answer for your hull exactly.

In general, 30% as a starting point.

a little less on calm water, a little higher on rough water.

Harry

[martin]

Yep as stated 30% is a good starting point on a deep v mono, in the case of a 35" hull start around 10.5" in from the transom.

[GatorsFan]

Thanks for the answers i have read about the percent i was asking how to go about checking it

[bob_t]

Take something thin (1/4" thick wood, or a couple layers of thick cardboard glued together) about 1" tall and cut a Vee in it. Don't make it too thick, it needs to be narrow, closer to a knife edge is better, but 1/4 inch-ish is fine. Set the boat (with batteries in it) in the Vee and see if the boats tilts toward the transom or bow. Move the Vee block forward or aft until the boat more or less "balances", not wanting to drop on the transom or drop towards the bow. The location of Vee block is your COG. Its easier to do on a cat since the bottom is flat ... all that you need is a piece of dowel rod that spans the beam width of the cat and do the same thing as above ... move it fwd or aft until the boat balances. Hope that helps.

[GatorsFan]

Thanks thst helps alot i have a cat also i figured it out just wasnt sure how to go about it on a v hull

[lenny]

Boat stand works good to if on the edge of a table.

[martin]

On a mono measure the length of the hull & take the % that you want, on a cat hull measure from the rear ride pad to the front of the hull & take the % you want. Always work from the rear ride pad & not o/a length of the hull on a cat.

[Old Sloppy]

on my mono's I lift the hull with a finger on each side,
grab it up high, near the top of the freeboard.
I then make a pencil mark where my fingers were ballancing the hull so then I mesure the mark with a ruller.

Harry