centre of gravity C19

[Dingo]

So I have the wee boat , without mast or any interior kit, on a flat bed farm trailer, while I wait for the winter UK sunshine to dry everything out ( )

I am converting a different two axle trailer to have a launch trolley, so that I can trail sail without having to crane in. The pic shows a trailer which I borrowed to collect the boat, and that's the sort of arrangement I want.

To obtain the correct balance point of the trolley and boat, to lock the trolley to the trailer,  can anyone give me an indication, please, of where the C of G is, so that I can draw a metaphorical line dow to the bottom of the keel to make sure the boat is balanced on the trailer ?

Are there any line drawings around please ?

many thanks from the windy UK.

Dingo

[marc]

I don't have any specific information but I believe you'd be OK to design a trailer with the center of the keel being the center of gravity. I did get myself beached this summer as the tide was going out. The boat ended up standing in 6 inches of water and stayed firmly balanced in place. Secure enough so that I washed off the bottom as I waited for the incoming tide.

[Tim Gardner]

I believe the Center of gravity would be near the center of the concrete filled section of the keel, about a foot aft of the mast compression post.

TG

[skip1930]

Yep, I agree with Tim Gardner. Midship on the keel of a CP-19.

Lifted her off the trailer to 'adjust' the trailer position or paint under the hull bunks and just for fun.

Take a 2-1/2 ton roll-a-round floor jack and a 12" x 2" x 10 inch long board and place it on the jack. Put that wood under the keel midship and on the center line of the keel, loosen the winch strap at the vee block and jack the boat off the trailer.

DO NOT PLACE THE STEEL JACK PAD DIRECTLY ON THE FIBERGLASS WITHOUT A CHUNK OF WOOD BETWEEN THE BOAT AND THE JACK.

It really doesn't matter too much if the stick is up or what's on board. If it's not lifting 'flat up' move the jack and board a few inches fore or aft one way or the other.

skip.

[Dingo]

OK, that ties in with what I have found out by loading the boat on the rig in the pics.  Many thanks everyone.