Agree with Dave and the others. The sides of the centerboard trunk should be flush with edges of the slot in the keel, and there should be no gaps. If you had steel ballast, we would know exactly what happened. With lead ballast, it is more of a puzzle. Maybe water got trapped inside the centerboard trunk and froze? -----Original Message----- From: Jeff Orlando <jeff.orlando@gmail.com> Sent: Thursday, June 23, 2022 4:13 PM To: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Subject: M_Boats: Re: Centerboard jams - update Attached is a photo of the trunk before I did anything to it. I don't have an after photo. There were no leaks or issues other than a slight bind when lowering the board. The only reason I was in there is for barrier/bottom paint. Jeff On Thu, Jun 23, 2022 at 1:00 PM Dave Scobie <scoobscobie@gmail.com> wrote:
Jeff.
Please share a picture.
Thanks in advance.
:: Dave Scobie :: M6'8" #650 :: Baba 30 #233 DEJA VU :: SV SWALLOW - sv-swallow.com <<-- FOR SALE! :: former owner M17 #375 SWEET PEA - m17-375.com :: former owner M15 #288 SCRED - m15namedscred.wordpress.com
On Thu, Jun 23, 2022, 12:06 PM Jeff Orlando <jeff.orlando@gmail.com> wrote:
The board doesn't appear to be glassed but the trunk appears to have added material at the bottom around the slot opening that reduced the clearance with the board to zero.. Original construction or later repair - unknown. It's plain to see by holding a straightedge vertically in the slot.
I sanded the material down enough to allow free board movement with 2 coats of bottom paint. I'll know tomorrow when the board is reinstalled if I'm successful. The board and trunk will not have any barrier coat since I removed it when the jammed board was discovered. A lot more material would need to be ground from the trunk to allow clearance for barrier coat.
When I first launched the boat after purchase, I noticed a slight bind when lowering the board. I thought at the time that the pennant was binding somewhere when in fact, even without bottom paint, there was interference between the trunk and centerboard.
I'd be very interested to hear Jerry's opinion.
Jeff