Looking for help with the mechanics of raising the centerboard on our
1978 Tartan 27-2. I have two questions: How is your CB pennant
attached to your CB? And what are the dimensions of the pulleys for
your CB lifting system? As reference, the Chesapeake Bay T27
Association's Handbook specifies the CB Pennant as 1/8" wire
(presumably flexible stranded stainless) attached to the centerboard
and 1/4" rope attached to the sailor's hand.
1) On our previous centerboard (RIP), the 1/8" wire went through a
hole in the aft edge of the board, into a bronze sleeve of about 7/8"
inside diameter. The wire was doubled over and crimped onto itself to
form a "stop knot". There was extensive, severe corrosion in this area
which I'd like to avoid next time. Does anyone know if this edge hole
arrangement was original? Has anyone used a simple rope, say 1/4"
diameter tied through the existing bronze sleeve?
2) Photo 19 of 31 under Tartan27 ¨C 213 shows the lifting pulleys on a
T27. The ratio of large pulley diameter to small pulley diameter
appears to be about 4 or 4.5 to 1. However, the existing setup on our
27-2 is a 10-5/8" outside diameter plastic pulley, with a working
winding diameter of 7-3/4". There is no small pulley. The wire pennant
wound directly onto a 1" diameter shaft, giving a ratio of 7.75 to 1.
Quite a difference. Plus, I can't imagine a 1/8" stranded stainless
cable reasonably winding onto such a small diameter.
Any help appreciated. Thanks.
Jack Wyman
1978 Tartan 27-2
Hull #667
"Seakindly" (for the time being)
Manchester, Michigan
