Standing rigging pin size for CD 330

[Bob. MacCracken]

I am planning to replace the standing rigging on my CD 330. The boat lives in Florida, therefore I will be using 316 stainless wire and Norseman Terminals. When using 316 stainless wire the manufacturer recommends that you go one size larger than what is currently on the boat. That also means that I will need to use 1/2 inch pins where the terminals attach to the mast and chain plates. When I asked the Rigger at the West Marine Rigging Shop, he suggested that I drill the holes out to accept the slightly larger pins. Anyone out there have any experiance with making these holes larger to make them accept larger pins? It appears that I would only have to make the hole 1/16th of an inch larger in diameter.



odinrav@bellsouth.net

[Larry DeMers]

The only thing that I would be careful of is actually making the new holes. A drill will vibrate all over the place (since there is such a large pilot hole now), making a very rough edge and possibly even making the hole elongated as it vibrates around. S.S. is hard stuff. I wonder if using a conically shaped grinding tool chucked in a drill would be better to enlarge your hole one size up? It would take more time to do it though. But the finished product would be a smooth finished hole, with no imperfections that could result in trouble later on.

Make sure there is sufficient material left when you make the holes in the chainlates.
Your idea is a good one, and I will be doing the same next year with our 20 year old rigging..which is still in great shape visually. (good spare material).
I suggest you do the same with yours..keep them as spares, coiled up and protected.

Cheers,

Larry DeMers
s/v DeLaMer
CD30 #1 on Lake Superior -looking for challengers!

I am planning to replace the standing rigging on my CD 330. The boat lives in Florida, therefore I will be using 316 stainless wire and Norseman Terminals. When using 316 stainless wire the manufacturer recommends that you go one size larger than what is currently on the boat. That also means that I will need to use 1/2 inch pins where the terminals attach to the mast and chain plates. When I asked the Rigger at the West Marine Rigging Shop, he suggested that I drill the holes out to accept the slightly larger pins. Anyone out there have any experiance with making these holes larger to make them accept larger pins? It appears that I would only have to make the hole 1/16th of an inch larger in diameter.

demers@sgi.com

[Joe Sankey]

I am planning to replace the standing rigging on my CD 330. The boat lives in Florida, therefore I will be using 316 stainless wire and Norseman Terminals. When using 316 stainless wire the manufacturer recommends that you go one size larger than what is currently on the boat. That also means that I will need to use 1/2 inch pins where the terminals attach to the mast and chain plates. When I asked the Rigger at the West Marine Rigging Shop, he suggested that I drill the holes out to accept the slightly larger pins. Anyone out there have any experiance with making these holes larger to make them accept larger pins? It appears that I would only have to make the hole 1/16th of an inch larger in diameter.

As I understand it, 316 in a tropical environment is recommended as it resists corrosion better than 304. I further assume that this does little more than prolong the expected life of the rigging.
When I replaced the standing rigging on our 30, an error was made and the turnbuckles on the lowers were supplied in the wrong size, with pins too large. The fittings (toggles) are available, I think, with different size pins. (In our case new wire was provided with the correct fittings) FWIW I would NOT consider changing the holes in the fittings, especially chain plates. In fact, if the 330 has the bronze chain plates similar to mine, I wonder how you'd get a drill to it. YOu might check with another rigging supplier for a second opinion as to how to solve the problem.
Joe Sankey
CD 30 Slow Dance



sankey@gulftel.com

[Ed Haley]

IMHO, I would not enlarge the hole with a grinding bit. No matter how careful you are, the enlarged hole would not be truly round by using a grinding bit. There would be eccentricities in the hole diameter which would then become wear points for the placement pin. Then both the pin would suffer greater wear and the hole would become even more enlarged although at different rates. If you have to enlarge the hole, I would take it to a machine shop where a perfectly machined hole would be mated with smooth new pins so that the pressure points would be eliminated.



eghaley@twcny.rr.com