here its about $25 for one. And you battle for about a week to find one in South Africa, We not realy big on useing gas for BBQ's

So in effect if you stretch the spring you will regain its strength? And would the crystal be hit from the top by the hammer? i know its pointless trying to fix that

Exepting that smaller piezos last for a day. Mine has a noticable drop in spark and frequency of spark, after about 3years. so time for a new one i think.

Just a simple question. Do BBQ igniters "wear out" like piezio igniters do?

IF you have a sleved barrel for the golf ball, the points where the sleeve meets ceates more than enough backspin, or front spin it depends on how you mount it

hope you can use this one. I think its a pretty awesome.

good luck with the vid

If i tell the guys at the hw store its for a cannon they look at me as if they looking at a dead man

I looked through the sticky, so basicaly there must be a minute gap between the piston and chamber, so that the chamber can fill with air through this gap. I understand the basic concept of how they work, of the higher pressure in the chamber forces the piston back and the air out the barrel. Thanks...

I must visit the electronics store to get a switch for the fan, Thanks for the heat shrink idea. I have closed up the wires with insulation tape so there its :thumbright: Shot the hole into hardboard. I have just come back from shooting marbles through a old piece of 4 ply plywood. I suppose not, Wi...

i saw the sticky. i have just been lazy to check how the are made. Guilty as charged

thanks, i understand the whole concept now. so basicalt in between the chamber and barrel you have your valve that releases the pressure from the chamber.

ok i get that a pneumatic works with compressed air in a chamber that is released via a piston that then gets directed out through a barrel. My question is, how do valves release this air? And must the pistons be made in a specific way?

The fuel system is effective after practise as you dont get exact ammounts every time. Zippo lighter gas fed via pipe I use as fuel lines on a remote controled plane(plane doesnt exist anymore). Close up of the fuel system http://i279.photobucket.com/albums/kk133/Go-Boom/100_2806.jpg http://i279.pho...

This is the second mini I Have made, and by far the most successfull, and fun. Specs- Chamber: 50mm pvc, 230mm long. Barrel: 17mm pvc, 905mm long. Chamber Fan, butane injection, BBQ igniter. Spark gap is two wires mounted inside chamber. http://i279.photobucket.com/albums/kk133/Go-Boom/100_2795.jpg ...

You might be a spudgunner if when ever theres a accident on tv or news friends ask "What did you do this time?"

All these thigs are so true, exept of te women part