Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 61 users online :: 4 registered, 0 hidden and 57 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

hydrogen powered mini

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 

is this a decent first mini spud for a 13 year old?

great job!
30
94%
it's ok, but i've seen better
2
6%
 
Total votes : 32
  • Author
    Message

hydrogen powered mini

Unread postAuthor: alwinovich » Sat Dec 20, 2008 4:24 pm

i made this little mini in about 7 hours
it uses a glue gun as housing
and the glue-heating chamber as combustion chamber
it has a detatchable barrel, made from the detatchable glue nozzle
it uses a flyback transformer running on 5 watt for ignition

sorry for any bad grammar, i am dutch and 13 years old

[youtube]http://youtube.com/watch?v=54w0bdm8QbY[/youtube]
just some test firing
  • 0

Attachments
PIC_0028.JPG
without spark
PIC_0027.JPG
with spark
PIC_0023.JPG
the assembled gun
PIC_0025.JPG
with barrel detatched
PIC_0022.JPG
electrolyser
PIC_0021.JPG
for remote firing
"The Black Box"10000 v power supply
housing the flyback

alwinovich
Private First Class
Private First Class
 
Posts: 36
Joined: Wed Dec 17, 2008 1:18 pm
Reputation: 0

Unread postAuthor: VH_man » Sat Dec 20, 2008 4:48 pm

very professional looking mini.

Hows the power with H2?
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: alwinovich » Sat Dec 20, 2008 4:55 pm

for short barrel designs it's i think the highest of all gasses
it can shoot a q-tip through 2 sheets of paper(i consider that high)
  • 0


alwinovich
Private First Class
Private First Class
 
Posts: 36
Joined: Wed Dec 17, 2008 1:18 pm
Reputation: 0

Unread postAuthor: VH_man » Sat Dec 20, 2008 5:11 pm

Just got time to watch the videos.....

its pretty dang loud for a mini........ I like it.

For a new member, you seem to have some well-refined concepts and ideas. I want more cannons from you........
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: ALIHISGREAT » Sat Dec 20, 2008 5:49 pm

its pretty cool how you do your own electrolysis and i like the look of the gun too, and the spark isn't bad either :wink:
  • 0

<a href="http://www.bungie.net/stats/halo3/default.aspx?player=ALI H IS GREAT"><img src="http://www.bungie.net/card/halo3/ALI H IS GREAT.ashx"></a>
Image
User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Dec 21, 2008 1:52 am

Impressive, I like how you managed to fit it the glue gun case, you really out to use a piezo ignitor to make it portable. What sort of penetration do you get with "serious" projectiles like BBs or airgun pellets?

Welcome to the forum :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: alwinovich » Sun Dec 21, 2008 3:22 am

i haven't tried any "serious" projectiles, because at the moment i don't have a fitting barrel
i'll work on it

i know the power of pure H2 and O2 mixed in the good proportion, so i used the flyback for remote firing
but now it's tested maybe i can put a piezo in it, but for multiple shots, i would have to have a H2-O2 storage tank
  • 0

I Reject Your Reality And Substitute My Own

alwinovich
Private First Class
Private First Class
 
Posts: 36
Joined: Wed Dec 17, 2008 1:18 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: alwinovich » Sun Dec 21, 2008 7:21 am

ok so i made a new, longer barrel, fixed some chamber air leaks
and ordered some .22 airgun pellets
i measured the barrel at roughly 5.7 milimeters
so they should fit

i will upload some dmg pics when they arrive
  • 0

Last edited by alwinovich on Sun Dec 21, 2008 10:39 am, edited 1 time in total.
I Reject Your Reality And Substitute My Own

alwinovich
Private First Class
Private First Class
 
Posts: 36
Joined: Wed Dec 17, 2008 1:18 pm
Reputation: 0

Unread postAuthor: inonickname » Sun Dec 21, 2008 7:22 am

I like it, fairly neat and tidy. Watch out with hydrogen as it has a far higher burn rate than propane so it's more like a sudden shock to the container. Looks like you have it under control though.

Welcome to spudfiles, you should check out my mini hybrid build. I might build an electrolysis unit and have hydrogen as a power source. Good luck :wink:
  • 0

User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: SpudFarm » Sun Dec 21, 2008 7:40 am

pretty cool little plinker you have got there. i have to say that i am impressed :)

you should be able to make a real hybrid in a very short time ;)
  • 0

"Made in France"
- A spud gun insurance.
User avatar
SpudFarm
Donating Member
Donating Member
 
Posts: 2563
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area
Reputation: 0

Unread postAuthor: VH_man » Sun Dec 21, 2008 9:54 am

could you post details about your Electrolysis machine?
I kinda want to do this.......
  • 0

User avatar
VH_man
Major General
Major General
 
Posts: 1827
Joined: Sat Dec 09, 2006 6:00 pm
Location: New Hampshire
Reputation: 1

Unread postAuthor: alwinovich » Sun Dec 21, 2008 10:36 am

about the cell

it is a electrolyser ripped out of a (€40)estes hydrogen rocket kit
housed in a jam jar
powered by a (€50)10 amp battery charger
where in tap water it draws about 5 amps where it generates 2 cc/s, i add potassium hydroxide(€14/kg) or sodium hydroxide(lye,€4/kg) if i want more amps=faster production

if any1 wants more details/tutorial about the gun/electrolyser/flyback transformer, just ask
  • 0

Attachments
estes.jpg
estes.jpg (18.64 KiB) Viewed 3004 times
I Reject Your Reality And Substitute My Own

alwinovich
Private First Class
Private First Class
 
Posts: 36
Joined: Wed Dec 17, 2008 1:18 pm
Reputation: 0

Unread postAuthor: iemand » Sun Dec 21, 2008 11:44 am

if any1 wants more details/tutorial about the gun/electrolyser/flyback transformer, just ask


Ok, then give me some details on your flyback ignition.
What kind of flyback did you use, and what else?
Maybe any schematics...

Nice gun, I'd say: scale it up, longer barrel, scope maybe?
  • 0

Proud member of the Dutch Spud Clan.
User avatar
iemand
Corporal
Corporal
 
Posts: 61
Joined: Sun May 11, 2008 5:49 am
Reputation: 0

Unread postAuthor: roboman » Sun Dec 21, 2008 12:02 pm

Not bad! It looks really nice, and seems to work pretty well.

BTW: Your grammar isn't the worst I've seen around here... :D
  • 0

User avatar
roboman
Sergeant Major
Sergeant Major
 
Posts: 176
Joined: Tue Nov 25, 2008 11:18 pm
Location: Long Beach, CA
Reputation: 0

Unread postAuthor: rp181 » Sun Dec 21, 2008 1:06 pm

iemand, there are many different ways to drive a flyback. From the look of the spark, am i right in saying its 555 driven?

Why do you disconnect the hose every time? Seems it would be more convenient to keep it attached to the syringe, and add a T to the electrolysis machine.
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

Next

Return to Combustion Cannon Database

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'