Mike: The sail goes as close to the masthead as I can get it. When I first got the boat I couldn't do this as the halyard had an eye to hold the headboard shackle and the resulting diameter of the line wouldn't fit into the masthead fitting. I cut off the eye and tied the shackle with a bowline. I can measure where the gooesneck 'floats' next time I'm at the boat. :: Dave Scobie :: M17 #375 SWEET PEA - https://m17-375.com/ <http://www.m17-375.webs.com> :: Truck camper - https://truckpopupcamper.wordpress.com/ :: Ramblings - https://scoobsramblings.wordpress.com/ :: former M15 owner #288 - http://www.freewebs.com/m15-name-scred On Mon, Apr 9, 2018 at 8:52 AM, Mike Barnett < claritysailingadventures@yahoo.com> wrote:

Dave,

When you hoist your main, how close to the top of your mast would you say the head of the sail is? Trying to figure out the ideal luff measurement for my boat's mainsail (I don't have an original, and I'm questioning the location of the gooseneck/sail slug cutout).

Regards,

Mike Barnett

http://claritysailingadventures.wordpress.com

On Monday, April 9, 2018, 10:09:36 AM EDT, Dave Scobie < scoobscobie@gmail.com> wrote:

the numbers from my M17, #375 ('83 model) -

boom is 7'9-1/4".

the gooseneck and aft boom fittings add 3/8" each.

the gooseneck adds another 1 5/8".

The outhaul block is at the aft end, so the line is turning just at the end of the boom, on the boom's port side.

:: Dave Scobie :: M17 #375 SWEET PEA - https://m17-375.com/ <http://www.m17-375.webs.com> :: Truck camper - https://truckpopupcamper.wordpress.com/ :: Ramblings - https://scoobsramblings.wordpress.com/ :: former M15 owner #288 - http://www.freewebs.com/m15-name-scred

On Mon, Apr 9, 2018 at 6:13 AM, Mike Barnett <claritysailingadventures@ yahoo.com> wrote:

All three of the booms I have available have sliding goosenecks. I think I'm going to use the boom originally off my 18' Sailbird trimaran, as it's in the best shape, has an outhaul car, and is already set up for reefing. I'll just need to move the mainsheet becket to a mid-boom location.

Regards,

Mike Barnett

http:// claritysailingadventures. wordpress.com <http://claritysailingadventures.wordpress.com/>

On Saturday, April 7, 2018, 4:13:03 PM EDT, Dave Scobie < scoobscobie@gmail.com> wrote:

Boom is likely about 8'3". I'll measure mine when I go to the boat tomorrow or Monday.

Does your boat have a sliding gooseneck?

:: Dave Scobie

On Sat, Apr 7, 2018, 1:50 PM Mike Barnett via montgomery_boats <montgomery_boats@mailman. xmission.com <montgomery_boats@mailman.xmission.com>> wrote:

More fun, and more questions... I've got 3 booms, and no factory specs. Anybody have any boom info? I'm going to be ordering a new main, and since I don't have the original, I need to figure out which boom I have (none are likely the original boom) will be the best choice. The most important measurement would be the distance between the tack and clew pins at maximum outhaul.