What type of 20 SF

[captmattson]

What are the preferred stringers the 4 typical stringers or the box style stringers? I also found a '78 master angler. I think it maybe sacrilegious to cut a shearline on a master angler. Im planing on creating a bay boat seacraft.

Next question is what is the best way to reinforce the hull sides to reduce vibration when not using an inner liner in the vessels cockpit? What is a good core material to do this?


Thanks for the input. I have been using the search function a ton. I will become a regular here as my project will be documented with a CSC photo journal.

[gofastsandman]

Originally Posted by McGillicuddy

Com'on, Skipper,
Cut the dang trees down and count the rings on the trunk

How many licks to the center of a Tootsie Pop?
I can get you a new sim card for google earth...4 ribs for early hulls. 72 or 73.There is a reason the elders keep me around.

Carl overlapped these for an almost flat laminate, centered on the step plane. Smart man.
Center the stringers in the middle of the plane and tab out. Very smart. Flex is just not for breakfast anymore. The steps have large shoulders. Always thinkin` that Moesly fella.

[flyingfrizzle]

Originally Posted by gofastsandman

How many licks to the center of a Tootsie Pop?
I can get you a new sim card for google earth...4 ribs for early hulls. 72 or 73.There is a reason the elders keep me around.

Carl overlapped these for an almost flat laminate, centered on the step plane. Smart man.
Center the stringers in the middle of the plane and tab out. Very smart. Flex is just not for breakfast anymore. The steps have large shoulders. Always thinkin` that Moesly fella.

Where is that damn decoder ring, u saying the big box stringers are better? I thought the four were stronger and were changed to the two box style to save on glass and weight.

[captmattson]

more pics. Im thinking '70 with some modifications??? I know the transom had been replaced and i think the put a bracing stringer in. This looks seacraft to me. I hope so because project is underway after 2 hours of shoveling dirt and harvesting poison ivy, pine trees, and magnolias. Motor removal and placing the boat on a new trailer this week.

[gofastsandman]

Originally Posted by flyingfrizzle

Where is that damn decoder ring, u saying the big box stringers are better? I thought the four were stronger and were changed to the two box style to save on glass and weight.

I am not an engineer, but I know one. Look at the tabbing of the four stringer layout. Almost connecting the layup. Spruce has a nice tight straight grain and of course adds beef. Plywood adds even more. Off the factory floor, I would say these are much stronger. Once the wood rots you see fracturing typical of these pictures. Please remember these hulls are older than most of the lurkers.

The old foam adds little structure and has fewer tabbing overlaps. You don`t see as many fractures but water intrusion can cause this and other obvious issues. My Slacker has mint stringers, but she shudders a good bit if I push her.The only time I pushed her really hard was trying to run with Bones at Peanut. She still sneers at me.

If I were going to do one from scratch, I would do a composite grid with big weep channels.
With epoxy. There I said it.

Checkout Caymanboy`s recent build for hullside coring.

Cheers,
GFS

[bobbert]

Would say 69-72 vintage. I owned a 70 and it came with the sides cut out for rod storage from the factory. Present 74 does not have cut outs.