300 yards .... nehhhh your not gonna make it with that cannon...
But nice cannon anyway 8)

Because most people dont have a compressor when they are shooting a few miles from home

spudgunnerwryyyyy wrote:Great idea. One lots of strength with that extra nut threaded over the nipple.

Loll DOn't you have eyes?

Look at my pic exact the same manner....

I finnaly got a better barrel.. and a 2" Cam lock
My 2" Cam lock gives nice flow! to a 28mm barrel
My C:B is 0.32: 1 chamber = 476 ML barrel 3 meter 28 mm
I shoot my hybrid a 6x or 7x fuel = Propane

Would this give me super sonic speeds
Projectile weighs 10 grams.

Thanks !

well..
I would say sch 40 cant hold the 30x mix pressure...
But how do you guys prove that DDT will happen..
Commonly everybody say ddt will happen at 5x or 6x mix...
Well im shooting my cannon at 7.5 x.... did it burst nope !
My chamber is now regular plumbing pipe rated at 150psi.
cause the sch80 ...

Then your actually telling that if u would open a ball valve with ur own hands, that it would be faster than a piston valve....
There is no faster valve then a burst disk it is instant flow.....

well ok 50/50 then...
maybe.... maybe not

Just get a Car coils home depot...
And wire it up and have fun..

well.. if a standard moped cilinder has a wall thickness of 0.8 centimeter a ik know about ddt in moped... the cilinders survives only the piston gets destroyd.. if my cilinder is 6.5 centimeters thick...
I dont think it blows...
the army fire's shell with cordite.. in a stainless steel chamber of ...

well actually your almost right.. SB15...
A Flywheel(with magnets) rotates around some coils wich produces voltage.. that voltage powers a condensor wich fire's when contact is interupted this is done by contact points or a CDI..
So a camera flash does work connect the + to the little tab and - to ...

Good method but could be easyer... you need a basic shradervalve from a tire with a nut
get a reducer inside tread+outside thread cut a rubber ring from your tire and put it around
the bottom of the valve. it has a metal ring around it so you can't push it out of the fitting because of the ring is ...

Use plastic sandwich baggy's wich u can buy... like 100 for 40 euro cent fold them 3 times into a sqaure and they can hold 6.3 bar.. fold 4 times and it holds 7.9

very cheap and they burst very well into a almost perfect circle ..
Works great in a Camlock replace time is like 8 seconds. including ...

did a new calculation here it is

http://img260.imageshack.us/img260/9289/berekeningsnelheidma0.th.png


http://img505.imageshack.us/img505/5269/speedkl6.th.png
1149 joules at 6 times mix 20 grams projectile

speedpicture is calculated @ 5x mix 10grams projectile
i dont know what i did wrong ...

well ive did some calculations.. with my 2 meter barrel i wont get past 860 fps but with a 3 meter barrel and 7x mix look... C:B 0.94/1

5x = 1.288 = 1.3 + 4 bar 926.5 fps
6x = 1.545 = 1.55 +5bar 951 fps
7x = 1.80 = 1.80 + 6bar 968.5 fps

This would be a C:B of 0.62 / 1
well if would enlarge my ...

@spudblaster you say about 40% +- well how did you get this awnsers..
Did u do math?
I made a miss calculation... my C:B is 0.94/1 I measured inside diameter this time
So a 3 meter barrel would give me a C:B of 0.62/1
4 meter would give me 0.47/1
but i dont want it to be longer then 3 meters that ...

@spudblaster15 srry i dont understand your english.. im dutch and my english is not so good.
you mean i will see a huge performance increase?
I think the damage aint enough and i built this fucker for supersonic so i want to have this thing At sonic speeds.