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 :: 5 registered, 0 hidden and 56 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Looking For Advice From the Hybrid Gods

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
Sponsored 
  • Author
    Message

Looking For Advice From the Hybrid Gods

Unread postAuthor: CannonCreations » Sat Nov 30, 2013 2:07 am

Hello, I will be building a piston valve hybrid cannon this December when I get some time off from college, and I am looking for some advice. I have no problem with anything but the ignition. I have seen many other guns use stun guns to ignite the fuel mixture, but unfortunately my state doesn't allow them. I have been looking for other ways to create a spark with enough voltage to ignite the fuel to air mixture and I am unsure how high that will need to be. I ran across this http://ultimatespudgun.com/30kv-igniter-p-219.html, but I don't know if 30,000 volts is enough for a reliable ignition with a 6x or 7x mixture. I am proficient with circuits and can solder pretty well so I am not against building an ignition circuit myself, but I haven't had the opportunity to work with voltages above 240V so if I can avoid it I will. Any help or advice would be greatly appreciated, thanks.
  • 0


CannonCreations
Specialist
Specialist
 
Posts: 57
Joined: Fri Sep 02, 2011 9:30 am
Country: United States (us)
Reputation: 2

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: PeteS » Sat Nov 30, 2013 7:51 am

The one that you linked to has been working flawlessly for me, but I have not gone beyond 5x.
  • 0

My wife upon seeing my latest hybrid and hearing an explanation of it:
"That really isn't a potato cannon anymore, is it?"
User avatar
PeteS
Sergeant Major
Sergeant Major
 
Posts: 180
Joined: Wed Sep 11, 2013 5:53 pm
Location: Maryland
Country: United States (us)
Reputation: 12

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: jackssmirkingrevenge » Sat Nov 30, 2013 9:17 am

I have used ordinary piezo ignitors from disposable cigarette lighters to ignite mixtures up to 16x reliably. The key is to make the spark gap very small (0.5mm or less).
  • 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

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: CannonCreations » Sat Nov 30, 2013 1:21 pm

Really? a piezo? what kind of voltage does that put out? and thanks for the quick feedback. Are you using a spark plug for your spark gap, or did you find another way that is better?
  • 0


CannonCreations
Specialist
Specialist
 
Posts: 57
Joined: Fri Sep 02, 2011 9:30 am
Country: United States (us)
Reputation: 2

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: jackssmirkingrevenge » Sat Nov 30, 2013 2:13 pm

This is one of my first successful hybrids, take a patient look through this thread: hybrid-cannons/topic21655.html

Image

You can use a commercial spark plug but they typically have a 1-2mm gap, you might have to adjust it slightly for higher mixes.
  • 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

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: CannonCreations » Sat Nov 30, 2013 10:03 pm

Thank you for your advice, I really appreciate your input. I am also a big fan of all the work you have done
  • 0


CannonCreations
Specialist
Specialist
 
Posts: 57
Joined: Fri Sep 02, 2011 9:30 am
Country: United States (us)
Reputation: 2

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: jackssmirkingrevenge » Sun Dec 01, 2013 6:40 am

CannonCreations wrote:Thank you for your advice, I really appreciate your input.


That's what the forum is for :) be careful though, it's not all wins: hybrid-cannons/topic21645.html
  • 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

Re: Looking For Advice From the Hybrid Gods

Sponsored

Sponsor
 


Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: SpudBlaster15 » Sun Dec 01, 2013 9:53 am

All of my hybrids have used a cheap 12kV electronic grill igniter, and with a properly designed spark plug, there are no issues to speak of up to at least 10X. JSR's work with higher mix hybrids has proven that even the most basic piezo igniters can work as well.

IMO, the spark plug design and wire insulation matter far more than which HV source you choose.
  • 0

People should not be afraid of their governments. Governments should be afraid of their people.
User avatar
SpudBlaster15
Major General
Major General
 
Posts: 2385
Joined: Wed Oct 18, 2006 11:12 pm
Location: Canada
Country: Poland (pl)
Reputation: 3

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: advancedspuds » Thu Dec 05, 2013 6:42 am

To be honest, once a stun gun is out of it's case, its no longer a stun gun, only a generic potato gun ignition. They just work so well and can be modular to use in multiple launchers too. IANAL but If you can buy one already converted into a ignition, it shouldn't be a stun gun as there is no effective way to harm anyone with it. It's just a black box with some hookups on it at that point. I have heard of luck with piezo electric, but never tried it myself.
  • 0

User avatar
advancedspuds
Private
Private
 
Posts: 15
Joined: Thu Dec 05, 2013 6:01 am
Country: United States (us)
Reputation: 0

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: CannonCreations » Thu Dec 05, 2013 2:55 pm

It would be really nice if I could find something like that, but I have decided to just go with the ignition source I linked at the top. It is supposed to put out 30Kv and I think that will be enough for my needs.
  • 0


CannonCreations
Specialist
Specialist
 
Posts: 57
Joined: Fri Sep 02, 2011 9:30 am
Country: United States (us)
Reputation: 2

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: jackssmirkingrevenge » Fri Dec 06, 2013 9:12 am

More than enough, though as I said if you're on a budget a simple piezo is sufficient ;)

This looks interesting: http://www.ebay.com/itm/XRS-Original-6v ... 3cd9429823
  • 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

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: PeteS » Tue Dec 17, 2013 5:28 am

jackssmirkingrevenge wrote:More than enough, though as I said if you're on a budget a simple piezo is sufficient ;)

True. I will mention that the Vipertek stun gun (under $10) can actually be found for cheaper than I have been paying for piezo igniters.

To the OP. The one you linked should be fine, but if you want to tinker with the vipertek someone here could probably buy one for you, remove the prongs and/or otherwise disable it as a stun gun and mail you the "no longer a stun gun device".
  • 0

My wife upon seeing my latest hybrid and hearing an explanation of it:
"That really isn't a potato cannon anymore, is it?"
User avatar
PeteS
Sergeant Major
Sergeant Major
 
Posts: 180
Joined: Wed Sep 11, 2013 5:53 pm
Location: Maryland
Country: United States (us)
Reputation: 12

Re: Looking For Advice From the Hybrid Gods

Unread postAuthor: Zeus » Tue Dec 17, 2013 6:59 pm

FYI, a piezo is around the 10kV mark tops, but incredibly low current.
  • 0

/sarcasm, /hyperbole
User avatar
Zeus
Major General
Major General
 
Posts: 1422
Joined: Tue Oct 27, 2009 7:34 pm
Location: 'Straya, C*nt
Reputation: 2

Return to Hybrid Cannon Discussion

Who is online

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

Reputation System ©'