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 49 users online :: 4 registered, 0 hidden and 45 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Infinite lifetime spud gun igniter for 3$

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

Unread postAuthor: RICHARDakaCHUCK » Thu Feb 24, 2011 1:21 pm

Solid state switch I changed into machanic button and instead of 555 timer I used 2 transistors. It's cheaper in this way. And another reason is that it is realy hard to get such things like ic's in my town so I designed something different...
  • 0

User avatar
RICHARDakaCHUCK
Private
Private
 
Posts: 8
Joined: Sat Feb 19, 2011 9:42 am
Reputation: 0

Unread postAuthor: Technician1002 » Thu Feb 24, 2011 2:05 pm

Hotwired wrote:Heck I've made one and there's no simpler way of doing it.


The simplest is simply an igniter coil as used on antique gas engines. A battery, coil, and switch. Doesn't get much simpler.


http://www.rustyiron.com/engines/ltcoil/
Image
http://en.wikipedia.org/wiki/Low_tension_coil
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: jimmy101 » Thu Feb 24, 2011 5:55 pm

Hotwired wrote:You can't make anything more simple and cheap than those gas ignition things.

They're a battery -> oscillator -> capacitor -> solid state switch -> HV coil.

Heck I've made one and there's no simpler way of doing it.

battery -> relay -> cap -> ignition coil
Don't need a solid state switch since a suitable switch is built into the relay. Don't need an oscillator since it is a capability of the relay.

edit: oops didn't look at the 2nd page. Tech said the same thing.
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3165
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 17

Unread postAuthor: Hotwired » Thu Feb 24, 2011 9:22 pm

The specifics were:

RICHARDakaCHUCK wrote:I'm really interested in cheap, simple and compact ignitor research.


So yes, I see your beer can sized automotive ignition coil based ignition and I raise you two rapid sparking homemade CDI systems that can fit inside that beer can*

Image


*depending on the size of can, maybe more.
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: mark.f » Thu Feb 24, 2011 11:14 pm

RICHARDakaCHUCK wrote:I'm really interested in cheap, simple and compact ignitor research.


<div align="center">Image</div>

Cheap, simple, and compact.

Unless you had another aim in mind? Like convenience, flexibility, or the "coolness" factor of doing your own electronics. :wink:
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3533
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 27

Unread postAuthor: RICHARDakaCHUCK » Sat Feb 26, 2011 3:46 am

I have nothing aginst these pjezoelectric ignitors, excep their lifetime. They will die ater few thousand ignitions... My aim is to make simple, cheap, powerful and compact ignitor which will last forever. And i mean MAKE not buy. I want something which I could make from scrap materials or buy components in ANY shop for minimal price...
  • 0

User avatar
RICHARDakaCHUCK
Private
Private
 
Posts: 8
Joined: Sat Feb 19, 2011 9:42 am
Reputation: 0

Unread postAuthor: mark.f » Sat Feb 26, 2011 7:53 am

Hence, the convenience of not having to replace an igniter (even after literally thousands of shots) and the "coolness" factor of making it yourself. :wink:

I've made my own ignition circuits from scrap before, but in terms of practicality I very often go with ready-made solutions (piezoelectric igniters, electronic heater/grill igniters, etc.).
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3533
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 27

Sponsored

Sponsor
 


Unread postAuthor: RICHARDakaCHUCK » Mon Feb 28, 2011 10:46 am

Mark, do you have any good advices how to wind HV transformer? I need small but powerfull one...
  • 0

User avatar
RICHARDakaCHUCK
Private
Private
 
Posts: 8
Joined: Sat Feb 19, 2011 9:42 am
Reputation: 0

Unread postAuthor: mark.f » Mon Feb 28, 2011 6:51 pm

No, I've never really wound one. The circuit above was planned around a small ATV (CDI) ignition coil.
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3533
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 27

Unread postAuthor: RICHARDakaCHUCK » Tue Mar 01, 2011 1:34 pm

Image
Image
Image

I mounted everything in air, just using few wires and made smaller HV transformer. I also improoved my circuit by changing few values and adding one extra cap (C4) so now the circuit works from 3v so you can use two AA bateries in series to feed it.
It ain't as small as I wanted, but it can run from a small 3,7V battery, gives hot white sparks and is quite enough for a spud gun. And I think it is quite smal to fit in spud gun's handlegip... I also had ideas to make everything using SMD's but it won't be so cheap then...
As I got sick and am short of free time because of my studies I won't make tutorial how to make such ignitor, but there are nothing too complex about it so here are few links:
HV transformer winding tutorial: http://www.youtube.com/watch?v=0kk9_Nen ... re=feedlik
First transformer can be an audio transformer...
If you have both transformers just get few electronic parts and conect everything like shown in the schematic.
If anybody has any more questions e-mail me: 6stygos.ricardas@gmail.com
  • 0

User avatar
RICHARDakaCHUCK
Private
Private
 
Posts: 8
Joined: Sat Feb 19, 2011 9:42 am
Reputation: 0

Re: Infinite lifetime spud gun igniter for 3$

Unread postAuthor: Potato Demon » Sun Jan 13, 2019 11:23 pm

I know this is a very old thread but, what about 2 nails in the chamber with the ends just under 1 cm apart. Then a small strand from steel wool in between them. On the outside there would be a toggle switch hooked up to a 9 volt. You would have to replace the steel wool but it would be easy.
  • 0

The world is the problem, the atomic bomb is the answer!

Potato Demon
Specialist
Specialist
 
Posts: 57
Joined: Tue Oct 16, 2018 4:22 pm
Country: Canada (ca)
Reputation: 3

Re: Infinite lifetime spud gun igniter for 3$

Unread postAuthor: hectmarr » Mon Jan 14, 2019 9:39 am

Potato Demon wrote:I know this is a very old thread but, what about 2 nails in the chamber with the ends just under 1 cm apart. Then a small strand from steel wool in between them. On the outside there would be a toggle switch hooked up to a 9 volt. You would have to replace the steel wool but it would be easy.

It should work. You can do a simple test, with an aerosol and a mixture of butane or propane and air, in stoichiometric relation, at atmospheric pressure. The aerosol that is the combustion chamber must have an exit orifice. The only thing that is uncomfortable to work with because you must install the filament every time you want to shoot. :roll:
I use these, and they work very well.
  • 0

Attachments
electric-piezo-igniter-for-gas-heater-parts.jpg
Actually I'm planning the improvised, and improvising what's planned!
User avatar
hectmarr
Colonel
Colonel
 
Posts: 554
Joined: Sat May 07, 2016 3:49 pm
Location: San Miguel de Tucumán
Country: Argentina (ar)
Reputation: 142

Re: Infinite lifetime spud gun igniter for 3$

Unread postAuthor: Potato Demon » Mon Jan 14, 2019 10:23 am

Well I guess I could use nichrome wire that way it lasts longer.
  • 0

The world is the problem, the atomic bomb is the answer!

Potato Demon
Specialist
Specialist
 
Posts: 57
Joined: Tue Oct 16, 2018 4:22 pm
Country: Canada (ca)
Reputation: 3

Re: Infinite lifetime spud gun igniter for 3$

Unread postAuthor: hectmarr » Mon Jan 14, 2019 10:29 am

Potato Demon wrote:Well I guess I could use nichrome wire that way it lasts longer.

Yes, the ni-cr wire will surely last longer. You have to know if you are going to reach to light the mixture. Question of proving and drawing conclusions :)
The sparks of cigarette lighters also work very well, and they are free! :bounce:
Here is a video of what interests you. It's in "Jack's Bible" :D on your YouTube channel.
  • 0

Actually I'm planning the improvised, and improvising what's planned!
User avatar
hectmarr
Colonel
Colonel
 
Posts: 554
Joined: Sat May 07, 2016 3:49 pm
Location: San Miguel de Tucumán
Country: Argentina (ar)
Reputation: 142

Re: Infinite lifetime spud gun igniter for 3$

Unread postAuthor: Potato Demon » Tue Jan 15, 2019 10:33 pm

That looks pretty cool! (Well hot actually :p ) i noticed a bit of a delay between the wire heating up and the combustion though. I guess it was heating up.
  • 0

The world is the problem, the atomic bomb is the answer!

Potato Demon
Specialist
Specialist
 
Posts: 57
Joined: Tue Oct 16, 2018 4:22 pm
Country: Canada (ca)
Reputation: 3

PreviousNext

Return to General Spud Cannon Related

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot]

Reputation System ©'