Search found 33 matches

by nitrogigi
Sun May 02, 2021 3:50 pm
Forum: Hybrid Cannons
Topic: Xtreme-patator
Replies: 11
Views: 1049

Re: Xtreme-patator

My chamber will be 27,3mm in diameter and 200mm long, Canon will probably be 1m long.
For the moment I will be at mix 5.

Could you please simulate aswell with a 6mm diameter barell, 0,84g steel ball, 1m long, 50cm long and 66cm long please?
by nitrogigi
Thu Apr 22, 2021 2:26 pm
Forum: Hybrid Cannons
Topic: Xtreme-patator
Replies: 11
Views: 1049

Re: Xtreme-patator

OK thanks !
I planned to put 3 layers of copper, but I'll go for steel.
I'm currently designing a meter that will be adjustable in volume, for the different mix.
Air pressure will come from a paintball airtank or a pump that goes up to 3500 psi to fill paintball tanks
by nitrogigi
Thu Apr 22, 2021 5:11 am
Forum: Hybrid Cannons
Topic: Xtreme-patator
Replies: 11
Views: 1049

Xtreme-patator

Hi guys, i'm presenting to you my new project : a hybride canon that will shoot 16mm glass BBs (kids toys ones), at 10 bars pre-pressure (~150PSI) for the first tests, and eventually, up to 300PSI Chamber will be made in steel, with a welded plug, canon will be a copper tube, 3 points flash ignitor,...
by nitrogigi
Wed Apr 21, 2021 7:09 am
Forum: Hybrid Cannons
Topic: HGDT calculator
Replies: 1
Views: 289

HGDT calculator

Hi guys! does anybody still have a valid link to HGDT calculator? or could put it back online? Many thanks in advance! I'm currently building an hybrid which will shoot 16mm glass bbs (kids toys ones) between mix 8 and mix 16, and I would like to have simulations of the max pressure of the chamber, ...
by nitrogigi
Thu Nov 22, 2012 6:01 pm
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

I maid a simualtion with solidworks, with mix10 and a burst disk holding 30 atm. It gave me a fire rate between 250 and 500 shots per minute, depending of the friction and of the spring stiffness :D
by nitrogigi
Thu Nov 22, 2012 4:03 am
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

it a resin with very short fibers mixed in it that improve the cohesion of the resin. I've already a pot of it, and I have to use it quickly so.....
by nitrogigi
Thu Nov 22, 2012 3:21 am
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

the inner of the brass would be scratched so that the epoxy can be well held I'll maybe replace it by glass fiber charged resin finally I won't hold the BB with a rubber tube, I'll put a screwed "inner barrel" to be able to put a burst disk, because I want it to hold about 40 atm as pre-ignition pre...
by nitrogigi
Wed Nov 21, 2012 4:14 pm
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

I found a special switch for HV, that is able to switch up to 100 000 volts but, I won't try such a madness, I don't want to get 35000 Volts in my fingers

I wont put a reed because I didn't find a form B one
by nitrogigi
Wed Nov 21, 2012 3:25 pm
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

what is HV?
the blue is only the background color
by nitrogigi
Wed Nov 21, 2012 1:26 pm
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

Image

all is on the picture

the mix would be between 6 and 10
I hope getting to supersonic muzzle speed with 0,3g aluminium BB for airsoft, HGDT gave me results up to 380m/s
by nitrogigi
Wed Nov 21, 2012 1:06 pm
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

here you can see the key in grey, wich would eject the cartridge: when the cartridge rushs back with the blow-back pressure, it will hit the key, rotate, and eject the magnet is just here to pull back the cartridge in case of misfire, you must pull back quickly the lever so that the cartridge hit th...
by nitrogigi
Wed Nov 21, 2012 6:41 am
Forum: Hybrid Cannons
Topic: "yankee spirit" full auto/semi cartridge hybrid
Replies: 14
Views: 2452

"yankee spirit" full auto/semi cartridge hybrid

Hi! My project is now mature enough so that I can let you know about it: generalities: caliber : 6mm airsoft aluminium BB canon length : about 550 mm cartridge internal dimensions : - diameter : 14mm -length : 45mm mix: 6 to 10 ignition : scooter ignition coil expected performances : 365m/s 22 Joule...
by nitrogigi
Tue Nov 20, 2012 5:42 pm
Forum: Hybrid Cannons
Topic: problem by designing shell ejection system
Replies: 27
Views: 4259

this will only be for very light machining, and I'll add a bearing above the chuck, the heaviest machining I'll do may be milling 1 mm of aluminium with a 10mm of diameter mill
by nitrogigi
Tue Nov 20, 2012 5:06 pm
Forum: Hybrid Cannons
Topic: problem by designing shell ejection system
Replies: 27
Views: 4259

here is the electronics sketch: http://i41.servimg.com/u/f41/17/81/45/82/schema11.png the reed switch is a normaly closed to lock it in semi-auto mode, the selector avoid the trigger to get full back, so that the white part is between the two conductors to shoot in full auto, you push the trigger sl...
by nitrogigi
Tue Nov 20, 2012 2:06 am
Forum: Hybrid Cannons
Topic: problem by designing shell ejection system
Replies: 27
Views: 4259

I'll make it in two wood parts with the inner milled to place all the parts