SpudFiles

Cerberus, Guardian of Hell, was the legendary three headed dog from Greek Mythology. Cerberus is also the name given to our 3" barreled ME 1-05H (Howitzer).

The pipe comes in today for our largest build. theLesser and I have been designing a howitzer type gun for the past few years and have just now accumulated the resources to build it due largely in part by NGO's (such as friends and relatives sending Christmas gift cards to home improvement stores and such). The massive 6" switchback design chamber has a tremendous 1494 cu. in. volume. Combine that with a 10' long 3" barrel and you have a gun with roughly a 1.6:1 C:B Ratio. 500,000 volt stun gun ignition using a quite similar spark strip design Starman used in Triple Thunder. Using propane and/or MAPPro as fuel, and having dual chamber fans, we hope to fling water filled coke bottles and sabot ammunition as far as we can. Breech loading seemed necessary for a switchback design. We've sketched things out, made scaled down mock ups, gathered scaled down recoil data (for which we've accommodated), and have tested the 12v switch box and ignition system. Pics to come later today of designs, specs, switch box, and of the gun's chamber pieced together.

Here's an an early scale drawing.

Holly cow! a ~1500 in^3 chamber! I thought mine was huge (213 in^3). Cant wait to see the WIP pics & finished product.

Bigger is not always better...but this may be an exception.

Hubb wrote:...but this may be an exception.

Once we see photos, otherwise it didn't happen

Like I said, it MAY be an exception.

Pics coming of the chamber being assembled. Just gotta find the camera

So here are some pics for your spudding enjoyment. We haven't got the spark gap in yet because we're letting the epoxy cure before we do any kind of machining to the gap. The "T" is also not connected for this reason. Does anyone know of an easy place to resize images online? The one I use takes a long time and I can't do multiple pictures.

Looking good, the switch box is a particularly nice touch

Thanks! We're using RCA jacks to hook everything up. theLesser hooked everything up inside the box. There's a relay that powers the stun gun so we don't get any feedback into the box itself. Also, if anything shorts out inside the box, the relay won't work and the gun won't fire. It's pretty nifty.

I'm 6'2

Is "the lesser" 3'1"

No. I think he's just 6'. However 6' > 6'2, and I can deal with that.

Surely then "the slightly lesser"

About uploading pictures, surely after the effort that's gone into the launcher it's a small chore to post some photos. You can set your camera to take smaller images so you don't need to resize.

As to videos (which I hope you'll be presenting with this monster), you'll need a youtube account.

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I was just wondering what you planned on using to seal the chamber off. It looks like you have a female adapter on the end and i was wondering if you planned to use a cleanout plug or what.

edit:went back and checked drawing and it looks to be so. I was just wondering how thick it would be, if you planned on reinforceing it with epoxy and a strong filler, or you werent worried about it blowing off.

Yes the LED in the toggle switch really stands out. Will be looking forward to see this finished and blowing holes in what ever...with what ever...