----- Original Message -----
Sent: Monday, April 29, 2002 10:06
PM
Subject: Re: M_Boats: (no subject)
Jerry,
I've got the centerboard out of my '76 M17 getting a new tang
welded on, sandblasted, and primered. When I get it back in about a
week, I'll make a tracing for you.
Larry Y.
About a month ago I inquired on this list if
there was an interest in a new centerboard for the "old" M-17, and got quite
a bit of interest; looks like enuff to ppursue the matter.
Interest was divided between a bronze board and
a lead-filled glass board. There is no bronze foundery around here and
after a quick search the closest one is in the Los Angeles area, which would
mean shipping the boaards to here (Sacramento), where I would grind and
drill them, then ship them to the customer. The cost would be in
excess of a thousand dollars, which seems like a lot to me. A
glass board with a cast lead core would be lighter (120 lbs???) and there is
no good, simple way I can think of to mold in the tang which stops the board
from overdropping so it would have to be supported from the hoisting line,
which PROBABLY wouldn't be a problem considering the lesser weight of the
board. The good side is that the board should be less than half the
cost of a bronze one.
Something to consider is that several (many?)
of the older 17's have a problem of swelling cb trunks, probably due to
water getting in and causing rust. I could help this problem by making
the board about 3/4" thick instead of the original 7/8". Owners of
boats not having this problem- hopefullly the great majority- could shim the
boards around the pivot hole (a simple matter).
If I do this project it will be either in
mid-summer, when I am finished with the 23 project at Nor' Sea, or next fall
sometime. Also, I need an accurate paper pattern of a board as I
have no good measurements. The original foundry pattern disappeared
during the bankruptcy of the iron foundry that had made the boards for many
years. So if one of you pulls your cb in the next few months,
please lay it on paper (newspaper is fine) and trace around it with a marker
pen, not forgetting the pivot hole.
Jerry