Boom Vang mounting deck plate and bails

[brackish]

Roughly how far back on the boom does everyone like having the boom bail? I know its position is a bit of a trade off between up/down wind performance. I don't want it as far back as the cockpit so there isn't an issue with the bimini.

Thanks,

Shawn

I kind of struggled with that dimension.  Read something that said it should be at a 45 degree angle.  Read somewhere else it should be at least 1/3 of the way down the boom from the mast.  With the boom so close to the base of the mast (at least on mine) not possible to do both, so I compromised.  Don't quite remember but I think I put it 38 or 40 inches from the mast measuring from a point on the mast that would drop a vertical line through the pivot bolt.  That would be about 34" from the gooseneck and that is to the centerline of the screw that holds the bail to the boom.  That does not create a 45 degree angle, but it works fine, so I'll measure it to confirm next time I'm up at the lake, probably next week sometime.

You primarily just want to make sure it will keep the boom from rising on points of sail once you get past a beam reach all the way to a run going off the wind.  At least that's my understanding, and mine works well to do that.

[brackish]

Roughly how far back on the boom does everyone like having the boom bail? I know its position is a bit of a trade off between up/down wind performance. I don't want it as far back as the cockpit so there isn't an issue with the bimini.

Thanks,

Shawn

I kind of struggled with that dimension.  Read something that said it should be at a 45 degree angle.  Read somewhere else it should be at least 1/3 of the way down the boom from the mast.  With the boom so close to the base of the mast (at least on mine) not possible to do both, so I compromised.  Don't quite remember but I think I put it 38 or 40 inches from the mast measuring from a point on the mast that would drop a vertical line through the pivot bolt.  That would be about 34" from the gooseneck and that is to the centerline of the screw that holds the bail to the boom.  That does not create a 45 degree angle, but it works fine, so I'll measure it to confirm next time I'm up at the lake, probably next week sometime.

You primarily just want to make sure it will keep the boom from rising on points of sail once you get past a beam reach all the way to a run going off the wind.  At least that's my understanding, and mine works well to do that.

Found some sketches in my "boat briefcase"  that indicate I was considering a shorter dimension, so I'm not sure what I ended up with.  Will check this week at the boat.

[Shawn]

Brackish,

Thanks, I appreciate the help.

Shawn

[brackish]

Shawn, I was off on my original estimate.  The boom bail hole on my 23 is located 28" from the face of the gooseneck casting, the flat cast aluminum piece that is attached to the boom.  It puts it 32" from the mast, perpendicular to the centerline of the mast pivot bolt. I don't know if that is optimal or best, but it does work.  It is neither at 45 degrees, nor at 1/3 of the way down the boom, but a compromise between the two because of the 23's low boom height.

[Shawn]

Thank you for the measurement. I will probably go in a very similar position, just want to check clearance with my bimini but I think that will be fine.

Shawn

[Salty19]

Just wanted to let other CP19 sailors know..the parts I've shown do indeed fit the boat properly.  You'll need small spacers as the bails are slightly (1/4-1/3") wider than the mast and boom. I've yet to find SS spacers but dd find zinc coated ones for cheap the HW store.   Also, you don't need nearly as much line for this application as I indicated--I went long as I was not sure what would be needed and didn't want it to be 6" short in an effort to save $3.  So it will be cut down to fit once that little yellow spot in the sky, which has been a stranger all winter,  makes it's way to my area.

Certainly most of the small boat vang systems would work just as well, and perhaps cheaper. 

MSS-You should sell those here on the forum!  Very nice!

[Salty19]

Just to check in here.   All the mentioned parts for a CP19 fit just fine.    Thank you Brackish for the suggestion on the swivel bail for the boom, it's working out nicely.

Performance is better than I expected; the mainsail seems to maintain a better foil shape.   No banging and clanging of the boom when tacking anymore. Both leech telltales seem to be "telling stories" whereas before only one or the other would fly, indicating either I was trimmed OK up top or along the middle but not both.   It seems like the mainsheet pays out better too..could be my imagination though.

I mounted it about 2" forward of the aft portion of an open companionway hatch slider.  The angle to the boom is roughly 45 degrees.  So it's not at all in the way when entering the cabin and still easy enough to adjust.