nah, more like im sure hes going to start off with a some what mild load and build up, as you do when re-loading.
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You are mad,
https://www.youtube.com/watch?v=YgX0ig7TRx4
:D
I'm going to guess the ball is going to stay put and the cannon is going to do 100fps in reverse :D:D
bloody shit phone
I would say 470fps.
Always fun to watch
Light blue touchpaper and retire - YouTube
gunworks has one, maybe my estimate was a bit high.
Build one of these instead
https://www.youtube.com/watch?v=ftgm...EXYRB&index=23
I'll estimate 584fps and cant wait to see this thing in action. I think the best chrony to use would be someone elses.
780fps best of luck VC looks like a fair bit of fun.
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75fps. Can I send my boss to stand close to it ?? Read maybe close to the front ishhhhh
607fps
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Well that was pretty smart. One day someone will be walking through the hills of Western Washington and stub their toe on a bowling ball and say "Dang, how did that there bawling ball get in them there hills?"
742FPS
Look forward to the vid :)
834 fps
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Hope to get some powder made this weekend.
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323 fps.
Make a lot VC. I have gone for the Big Bang theory in my guess.
Just remember how unforgiving this shit can be if you get it wrong!!:O_O:
Ah you bloody spoil sport. I have calculated the worst possible outcomes to be knocking the mast of the Inter Island ferry or hitting the beehive. The mast will be cheaper than the propellor was to fix and parliament would ensure hero status for our honourable (forum) member. Disclaimer: This comment has been made purely in jest and is in no way meant to undermine the safety warning issued by the right honourable member from Tauranga.
VC, mix in a bit of 2208, I suspect my estimate is a bit on the high side, might need some "help" on the velocity side :D
A bit of compressed air might help as well, remember dont crunch the BP when loading! use a grease cookie and cork wad would be good!
Time to share a yarn I think
Many moons ago my father built a cannon in firing order out of brass he aquired while my grandfather was working at the Aratiatia power station construction, one day dad and one of his mates (now a retired gunsmith in tauranga) decided to fire it one weekend in the driveway of where my father lived in the Aratiatia village Albie (my fathers mate) flogged a few shotgun shells off his old man and they used the powder from them to charge up the cannon and then put a lead ball down the barrel the first couple of firings the lead ball just fell out of the end of the cannon, so albie suggested stuffing the wad down it after putting powder in followed by lead ball, all this time my grandfather was happily working under his car in the garage on a creeper board so albie and the old man fired this bloody cannon with the wad included, the canon roared the tree they were aiming at lost some of its bark the cannon recoiled backwards so well it hit the creeper board my grandfather was laying on and sent him scooting the rest of the way under the car and out the other side. Needless to say albie and my father thought it was a good idea to run like hell and stay away for a few hours to let grandad cool off. Close to dinner time dad and albie arrived back to my dads house everything was dead quiet and calm the front door was open so dad and albie strolled on in thinking all was well until from behind them they heard the distinct sound of that door slamming shut. They slowly turned around to see my grandad with the look of death in his eyes and holding the dreaded strap made from an old conveyor belt.
VC, what about building a bigger one like this
MT. HOWITZER
I seem to remember some old guy with a need of a haircut had a lot to say about "equal and opposite" reactions.Before my time though so I may have got that wrong.
Chain and a good ground anchor might be the go?:thumbsup::o
Yea its got rings on the trolly for rope to go threw sort of like a ships canon, Its not me making it.
currently the bore is such a good fit/finish that the ball takes around 3seconds to get down the bore under its own weight with it compressing the air under it.
I suggested its probably too tight as it will carbon and that usually these things are patched.
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Normally you use soft lead that bumps up an seals between the barrel and projectile, I would loosely fit it with a greased patch, you want the fucker to go, if it doesn't your pressure will build!
We are getting closer.
Attachment 27183
Attachment 27184
I am thinking wall it in on 2 sides with 12mm plate and use 2x best guess at charge to proof it.
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Start with 30 grains and work up, un burnt powder will be blown out the barrel, wait till it's snowing and fire it over white snow, if you overload the black un burnt powder will show on the snow. You can tune it like that. Built like the stubble behind it!:thumbsup: