HK G11 based AR

saintkatanalegacy · December 31, 2011, 11:33:01 AM

still a work in progress...

basically a simplified version with less albeit bigger parts

rickshaw · December 31, 2011, 04:44:52 PM

Tube loading, I take it?

Still caseless?

saintkatanalegacy · December 31, 2011, 11:48:35 PM

same vertical loading, same ammo

rickshaw · December 31, 2011, 11:56:30 PM

Then I misread the drawing. OK, I assume you've fixed the cook-off problem?

saintkatanalegacy · January 01, 2012, 03:26:25 AM

Well, I made modifications with the breech: Copper heatsink with oblong heatpipe; plan on adding a small turbine to feed air into the central heatpipe.

rickshaw · January 01, 2012, 03:52:32 AM

If you're going to that sort of trouble, why not do a proper heatpipe with the funny cooling powder inside, as used in electronics?

Alternatively, you could make it liquid cooled. Put the radiator in the butt.

Weaver · January 01, 2012, 04:38:56 AM

Quote from: rickshaw on January 01, 2012, 03:52:32 AM
If you're going to that sort of trouble, why not do a proper heatpipe with the funny cooling powder inside, as used in electronics?

Alternatively, you could make it liquid cooled. Put the radiator in the butt.

Hmmm - popular in Norway and Sweden, possibly not in Saudi Arabia.....

rickshaw · January 01, 2012, 05:19:14 AM

Quote from: Weaver on January 01, 2012, 04:38:56 AM
Quote from: rickshaw on January 01, 2012, 03:52:32 AM
If you're going to that sort of trouble, why not do a proper heatpipe with the funny cooling powder inside, as used in electronics?

Alternatively, you could make it liquid cooled. Put the radiator in the butt.

Hmmm - popular in Norway and Sweden, possibly not in Saudi Arabia.....

So? Don't sell to the Saudis! Sell them to the Chileans and Canadians instead!

saintkatanalegacy · January 02, 2012, 04:34:17 AM

Hmmm... studying the schematics further, the exterior design used up a lot of dead space in the rear stock. Lot's of space for the radiator

rickshaw · January 04, 2012, 04:20:33 AM

Quote from: saintkatanalegacy on January 02, 2012, 04:34:17 AM
Hmmm... studying the schematics further, the exterior design used up a lot of dead space in the rear stock. Lot's of space for the radiator

Are you allowing for the recoil? The G-11's working parts, magazine and barrel recoiled in the body of the weapon. It was this which allowed its high rate of fire (the weapon reloaded and fired its third round before it hit the buffer in the rear of the body).

saintkatanalegacy · January 04, 2012, 09:33:21 AM

well, it's pretty tricky... AN-94 tricky... my goal is to simplify the whole thing for easier field refitting and make the "dead space" more space efficient. I reckon using something similar to say... an earthquake buffer to reduce overall length.

think... think... think...

heatsink + paper weight recoil buffer + armpit radiator =

Old Wombat · January 05, 2012, 05:41:53 AM

So, a whole bunch of soldiers with one really sweaty armpit?

rickshaw · January 05, 2012, 06:12:37 AM

Dunno. Last time I fired a rifle I had it on the front of my shoulder, not under my armpit.

I also think that you're all being a tad excessive. If you really are worried too much about his underarm comfort put the radiator on his back (there is no reason why the radiator couldn't be connected by flexible tubing to the weapon stock with quick release couplings and self-sealing valves).

Of course, this all opens up opportunities for heat seeking missiles...

pyro-manic · January 05, 2012, 06:16:36 AM

Think about it - you can have a cup of tea immediately after a firefight. What's not to like?

rickshaw · January 05, 2012, 06:26:47 AM

The soldier's best friend! Guaranteed to keep you warm at night!