I did something like this years ago:

http://www.spudfiles.com/forums/fire-ex ... t4009.html

That's rather vague. Arrows come in all different shaft sizes ,without bring specific he would not know which particular size to purchase.

I'm assuming your camber fan comes from or was intended for use in a computer. Yes it is a brushless fan but the motor control circuit is located within the fan itself. You need only to supply power via the black and red wires. The yellow wire would have been used to calculate the fans speed by the ...

If you have a decent knowledge in electronics you could salvage a diode from an old DVD burner and make a diode driver. They are usually in the range of 250mw.

I have a quite powerful 50mw 532nm green laser. It can do the basics such as pop balloons and cut through electrical tape or balloons. The fact that the human eye is 50 times more sensitive to the light from these types of lasers than the standard red ones, combined with its high output power makes ...

I doubt that works. In PVC solvent welding the two pieces are actually melted together, when the solvent dries they remain fused. For that to work there needs to be an gap bewteen the pipe and fitting that is filled with glue, which in this case there isn't.

So what? How do you expect that to travel back into and detonate the tank when it contains no oxygen.

The ignitor It should have a wire emerging from about the middle of the casing and a brass cap on the bottom. That brass cap is the other "wire" you are looking for. Tape a wire to that brass cap and there you go.

The only effect weight would have would be how badly the rider is effected by air resistance.

Yep, same old 60/40 lead/tin that I use for electronics also. You won't be able to use a soldering iron though, you'll need to head it up with a torch. If you want something stronger than solder, you should use some sort of brazing alloy. Edit: Actually, co2 fire extinguishers are rated to 1250psi, ...

Although I am quite confident that it will hold fine at much higher pressures. Even if the soldered joint did fail, it would be by no means spectacular. I'm sure everyone here has used "quick disconnect" sockets, well a similar thing would also happen in the event of failure of this joint. The reas...

Hi, in regards to your first question, Absolutely! if you can find or machine and appropriate fitting that would allow you to refill from the top then there be be no problem. Although if it was up to me I would place a valve there to give an accurate reading of pressure. An easier solution though wo...

A fire extinguisher can make a perfect high pressure air storage tank. It can be quite useful for refilling a pneumatic cannon for a second shot without having to fire up the air compressor or bicycle pump. Although due to its low volume (depending on size) it is not suitable for an automatic BB or ...