Veszett Roka Posted September 17 Share #61 Posted September 17 You can connect the hatch to the captain's shaft with two bumpers (or even a single), thus the captain can open a hatch en-route to the flybridge and close it after he is down already. I believe it is just matter of space inside the tower or in the hull. Brilliant work! Canute and mtaylor 2 Quote Link to comment Share on other sites More sharing options...
FreekS Posted October 23 Author Share #62 Posted October 23 Working on the “captain below” feature. O-13 has 4 hatches. I’ve made those from wood before, but to have low friction hinges I decided to print these. All hatches should open when the boat surfaces, and close before submerging. The hatch to the forward torpedo room has just enough space below it for half a crewman to stock his torso out of the hatch. by the way; the 1:50 winch holds the mechanism below and is the first part made with my first ever, very old Unimat-3 Lathe! I’ve mounted him on a printed double-arm balance, so he comes vertically up. On the other side of the balance are a 4ml blue foam-float weighted with 2 gram lead. So a “driving force” of 2 gram to either raise the float when the deck floods or to lower it when the deck drains on surfacing. The hatch is driven by the 2ml float weighted with 1 gram of brass on the right of the pic. It all seems to work dry…. although there is more space underneath the bridge, the officer emerging from the hatch there has to rise full length, to be visible over the bridge rim. The double-arm balance did not fit there, so the officer is pushed up by a simple counterweight and is guided by a brass wire. It’s a little more iffy - likely needing optimisation. The nut will be replaced by a compass stand made on my lathe. ccoyle, yvesvidal, Canute and 3 others 6 Quote Link to comment Share on other sites More sharing options...
Veszett Roka Posted October 24 Share #63 Posted October 24 The double hinged arm is a very elegant solution. About the captain, i guess the friction between the push rods and the captain's wooden base cause that iffynes. If i'm right, a dome cap could solve it like this: But anyways, i'm admired. mtaylor and Canute 2 Quote Link to comment Share on other sites More sharing options...
FreekS Posted October 24 Author Share #64 Posted October 24 That looks like a great idea! mtaylor and Canute 2 Quote Link to comment Share on other sites More sharing options...
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