More on Torpedo Launcher Production

[He Who Shall Not Be Named]

How about making perforations at the breech end of the launch tube to vent excess gases out?

Two reasons:

1. I don't want a flurry of bubbles within the hull -- the over-pressure is tough on the hull closure fasteners and for the time it takes the bubbles to find their way out of the top of the hull, the boat is very bow light and tends to broach.

2. I want velocity on the weapon. Venting some of the impulse gas inboard negates that requirement.

David,

[Scott T]

A circle cut from a ping pong ball might make a sabot for firing a torpedo. Cliping the edges might make a flexible fringe to engage the cylinder walls. Or wax ring see illustration.

Or use the ping pong ball circle attached to a stick to make a ram to insert a wax paper
ring with the correct shape.

Scott T

[He Who Shall Not Be Named]

[ATTACH=CONFIG]5722[/ATTACH]A circle cut from a ping pong ball might make a sabot for firing a torpedo. Cliping the edges might make a flexible fringe to engage the cylinder walls. Or wax ring see illustration.

Or use the ping pong ball circle attached to a stick to make a ram to insert a wax paper
ring with the correct shape.

Scott T

Keep it simple. A sheet of .005 styrene plastic, two punches (one for the outer diameter of the dist, a non-interference fit to the tube bore, the inner hole to fit around the torpedoes nozzle tube) and you have a sabot disk, ready to slip over the torpedo nozzle tube and up against the trailing edge of the fins.

David,

[Kazzer]

Keep it simple. A sheet of .005 styrene plastic, two punches (one for the outer diameter of the dist, a non-interference fit to the tube bore, the inner hole to fit around the torpedoes nozzle tube) and you have a sabot disk, ready to slip over the torpedo nozzle tube and up against the trailing edge of the fins.

David,

It would be good to see a photo of this, us 'Great Unwashed' are having 'visualisation problems here!

[Rpmtech1]

A foam washer/piston of some sort maybe, so it floats and is retrievable. Smooth-On has that light floating resin...

You can punch out foam "washers" out of Depron foam sheet come to think of it. 1,2,3 and 6 MM are the available thicknesses. I have tons of it in all thickness if you want to try it.