Last Blast Junior

[mark.f]

Last Blast Junior

Barrel: 48" x 1-1/4" SCH-40
Chamber: 15" x 3" SCH-40
Connection: breech-loading cam lock barrel
Mixing: Ozark Trails camping fan
Fuel: Thumb-operated MAPP meter
Ignition: single-gapped BBQ sparker handle

This is just a little gun I came up with this week to provide a more portable combustion cannon for me to use. Decided to build it after wanting another "small" gun. Here's a few pictures.

full.jpg (26.38 KiB) Viewed 2707 times

back.jpg (33.74 KiB) Viewed 2707 times

fan.jpg (27.88 KiB) Viewed 3893 times

[falcone]

very nice cannon, what so you shoot out of it mostly and about how far?

i like your sig btw

[Bluetooth]

Thats a cool cannon but to my standards i wouldn't clasify it as small. How far does it shoot?

EDIT: to late for the how far does it shoot . Any damage pics?

[mark.f]

All I've been shooting mostly are blanks and D-cells. It's dark so I can't tell the range/damage.

[Bluetooth]

You can't see where your shooting yet your shooting d-cells?

[mark.f]

Yup. I think you don't realize I live WAY the hell in the middle of nowhere. Mostly I've just been shooting into a stand of oak and underbrush right next to our house.

[Bluetooth]

How long does it take you to get to the closest store? ( i bet those pizza delivery guys hate you lol )

[experament_u2]

nice gun i would defently want to see some damage pics

[SpudBlaster15]

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

[mark.f]

Nope. It's just as easy for me to flip it on when I start and off when I'm done.

[SpudBlaster15]

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

[Flying_Salt]

Very nice, but you should build a sparkstrip for it. My bbq ignitor can easily handle 3 good-sized sparks, and the preformance went WAY up. It went from boom to BOOM

[SpudBlaster15]

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.

[mark.f]

I personally don't really bother with dual ignition anymore. I find that one gap at the back of the chamber works great for me. My first two serious cannons had dual ignition, and they're not anymore powerful than the LB and now the Junior. I still think that pressure rise is equal across the entire chamber, regardless of the position of the flame front(s).

[Flying_Salt]

All I've been shooting mostly are blanks and D-cells. It's dark so I can't tell the range/damage.

Wait, aren't blanks kind of dangerous? I thought the force of the explosion had to be transfered to the ammunition...