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R
rnlock
Senior Member
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From Massachusetts
Joined
Aug 2, 2016
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R
rnlock
replied to the thread
Ply or foam cat inspired by 3m inflatables
.
First off, I'm not from New Zealand, and some of the following is a bit hypothetical. I think fiberglass covered foam might be heavy...
Oct 2, 2026
R
rnlock
replied to the thread
Re-design of 8 Foot Dinghy . . .
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I designed and built a dinghy for a friend that weighed about 50 lbs, light enough so that he could put it on top of his van by himself...
Oct 2, 2026
R
rnlock
replied to the thread
Concept feedback: Ultra-light 4m plywood day-sailer (stitch-and-glue)
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If you want classic and sporty at the same time, you could look at some of Uffa Fox's planing dinghies. This link only has a couple of...
Oct 2, 2026
R
rnlock
replied to the thread
Hopefully an RC Sailboat in the future
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What's the intended use? It looks like a beamier, slightly shorter version of a Marblehead given a very short rig and fin (keel on a...
Oct 1, 2026
R
rnlock
replied to the thread
would you drown in big ships wake due to air bubbles lowering density?
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Spatulation????? Suckulation??? I suspect that a jump from most places on the deck of a carrier would not put a person into the...
Oct 1, 2026
R
rnlock
replied to the thread
low cost cargo boat
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Apologies if you've thought about all this before: It will be interesting to see how this works out. Would it be possible to use longer...
Oct 1, 2026
R
rnlock
replied to the thread
What’s the Best Trolling Motor Battery for Long Fishing Trips?
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I don't know if you can get them, but a propeller with slightly less pitch or a slightly smaller diameter might help with this. Or a...
Oct 1, 2026
R
rnlock
replied to the thread
Haines Hunter Rebuild - Keel Ballast Chambers?
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I've read horror stories about fuel attacking integral composite fuel tanks in homebuilt airplanes. It's probably a good idea to really...
Oct 1, 2026
R
rnlock
posted a comment on the media item
International Moth - GER-1038
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Amazing that this could go 21 years without an answer. They are 11 foot singlehanded racing sailboats. At the time of the original post...
Oct 1, 2026
R
rnlock
replied to the thread
Solar power catamaran prop size
.
Hmm... If that 2.5 foot prop has a p:d of 1:1, and the pitch speed is 15 knots, you're looking at about 600 rpm.
Sep 10, 2026
R
rnlock
replied to the thread
Solar power catamaran prop size
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It's my understanding that brushless motors aren't all THAT complicated and that it's possible to make them with low kv values.That is...
Sep 10, 2026
R
rnlock
replied to the thread
Naval Architecture design software
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Even when it isn't AI, some entertaining results are possible. I've seen the results of a program that ran through many iterations to...
Sep 10, 2026
R
rnlock
replied to the thread
What’s the Best Trolling Motor Battery for Long Fishing Trips?
.
I don't know what's marketed specifically for electric boat motors, but the motor doesn't know either. There are a number of different...
Sep 9, 2026
R
rnlock
replied to the thread
Silly Idea- Making a basic headsail rig for my rowboat
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I once owned a Bolger Brick. It actually sailed upwind reasonably well. The Bolger Brick's bottom is a single sheet of plywood with a...
Sep 9, 2026
R
rnlock
replied to the thread
Naval Architecture design software
.
Are you implying that there is something special about AI for naval architecture that means it can't fail? I've certainly seen plenty of...
Sep 9, 2026
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