Search found 4 matches

by markwilliamson
Sat Jun 25, 2022 2:27 pm
Forum: General Topics
Topic: Seagull powered submarine
Replies: 6
Views: 5433

Re: Seagull powered submarine

The conning tower is kid-sized and the periscope actually has very nice optics but is non-functional. The optics are from what was a high quality pair of binoculars which sat out in the weather and were beyond repair. A neighbor gave it to me explaining that it "was from the guy who died and us...
by markwilliamson
Thu Jun 23, 2022 12:23 pm
Forum: General Topics
Topic: Seagull powered submarine
Replies: 6
Views: 5433

Re: Seagull powered submarine

It is surprisingly stable. Very good primary stability (I think it's called) and (I'd say) no secondary stability. The top structure which is made of thin aluminum and some wood weighs around 75 pounds and has a low center of gravity. I do have some inflatable outrigger pontoons that provide a littl...
by markwilliamson
Thu Jun 23, 2022 12:54 am
Forum: General Topics
Topic: Seagull powered submarine
Replies: 6
Views: 5433

Re: Seagull powered submarine

Actually... here's a photo showing the snorkel for the carb :) We towed it in a parade a few weeks ago. That's my father-in-law in the drivers seat.
by markwilliamson
Wed Jun 22, 2022 10:44 pm
Forum: General Topics
Topic: Seagull powered submarine
Replies: 6
Views: 5433

Seagull powered submarine

I figured some of you guys will get a kick out of this. I built it last year on a canoe hull. Somewhat seaworthy and a lot of fun!