While the attached file is not-to-scale and undimensioned, I hope it's of some help. And hopefully the drawing Randy refers to can be found and is more valuable. Good luck, John Tyner M-15 #412 "Chimpanzee" On 2/1/2025 8:54 PM, Randy Graves wrote:
Hi Don,
Sorry about your centerboard. Just for reference - the later M17 (1982’ish and newer) use the same centerboard as the M15. I changed the centerboard on my 1988 M17 and wish I had made a template of the old damaged board.
My hope is you can find a drawing, or someone who has/will have their centerboard out and can get some accurate measurements. Seems I’ve seen a drawing and will keep looking. We are near neighbors as I sail on Pend Oreille.
Randy Graves M17 #410 On Sat, Feb 1, 2025 at 1:57 PM<donkuehne@hotmail.com> wrote:
Still hoping I may find actual dimensions, but measuring the trunk is where i'll head. Be interred in a price for a finished new or used one. But alas I am a wood worker and that is my back up plan. Considered aluminum too, and potentially some sandwich construction.
Thanks for those comments. The average depth may be 40 ft but where I was, likely deeper. Light even in our crystal clear spirit lake only penetrates about 30 ft. And I really have no idea we're it actually came loose. I sailed likey several times without the rope. (It went first) So I thought I was ok till winter with it down. I started to notice horrible pointing. But it really wasn't till I got her out of the water that I knew what that bump really was.
-Don
On Jan 31, 2025 3:58 PM, Lawrence Winiarski via montgomery_boats < montgomery_boats@mailman.xmission.com> wrote:
Underwater drones are getting cheaper too. Don't know much about them, but I think the future is very promising. https://www.youtube.com/watch?v=5fUIgP119H0
On Friday, January 31, 2025 at 03:44:22 PM PST, jerry montgomery < jmbn1@outlook.com> wrote:
Woops! I think Lawrence is right; do a good look for it. If all fails, I think you could make a decent on out of aluminum plate. Double check this but I think the boards were 1 1/4". I don't think an accurate drawing of the board exists anymore, but you could determine the size by taking some close measurements of the trunk, using a yardstick. If you're a woodworker you could make one of wood, with a lead slug at the tip, then heavily glassing it, and bushing the pivot hole. Err on the side of too thin because you can always use bushings on both sides at the pivot. Another good way would be to make a pattern of wood, then have it cast in iron. Good luck! From: Lawrence Winiarski via montgomery_boats < montgomery_boats@mailman.xmission.com> Sent: Friday, January 31, 2025 3:05 PM To:montgomery_boats@mailman.xmission.com < montgomery_boats@mailman.xmission.com> Cc: Lawrence Winiarski<lawrence_winiarski@yahoo.com> Subject: M_Boats: Re: New to email list, looking for a replacement centerboard Sounds bad. Dumb question: What about the rope that you use to raise and lower it? Did that suddenly come loose too?
If it was me, I'd exhaust all methods to find it at the bottom first. Spirit lake is deep, but not that deep. Maybe try and recover it. Google says around 40'.
On Friday, January 31, 2025 at 12:23:50 PM PST, Don Kuehne < donkuehne@hotmail.com> wrote:
Hello,
I am the proud owner of a M15 on Spirit Lake, ID.
It can get pretty gusty here and my "Penelope" can get rocked on the dock pretty aggressively.
The centerboard front pin had worked its way loose (unknown at the time to me) and during a sail last season I notice a bump... then no centerboard.
My board is lost in the deep and I am looking for a replacement. Does anyone know of a source or specs for the size, shape etc... To have a new one made?
-Don
