SpudFiles

They're kind of hard to find nowadays, since most people are interested in quieter computers (Not something I was ever concerned with, since my computers are in a rack). I found four of these things while rummaging through some of my old computer parts -- we dubbed these things "the woodchipper" because of its high RPM (5700RPM)



I could have swore these things had ball bearings, but it does say it's DC Brushless. Anyway, they move 80CFM, so they'll find a new home inside my 6" dia chamber. They're 80mm x 38mm.

damn good find
good luck with the 6 inch gun

I have one of those but it runs on AC power... what would the best way to convert it to DC use? ( Im no good with electronics like that so any help would be greatly appreciated )

you cant convert the motor. AC motors use one coil of wire, dc use multiple.

brogdenlaxmiddie wrote:I have one of those but it runs on AC power... what would the best way to convert it to DC use? ( Im no good with electronics like that so any help would be greatly appreciated )

You can't convert the motor. But you can get a power inverter to convert DC into AC -- they're popular in automotive stores, or pretty much anywhere automotive accessories are sold. Check here for more details.

brother361 wrote:damn good find
good luck with the 6 inch gun

Thanks man, appreciate it. I'm actually making a bit of progress.

brogdenlaxmiddie wrote:I have one of those but it runs on AC power... what would the best way to convert it to DC use? ( Im no good with electronics like that so any help would be greatly appreciated )

Be sure whatever fan you put in a combustion cannon chamber is brushless. With brush motors comes sparks between the brushes and the spinning commutator...not usable with flammable gases.

Brushless DC fans will be the more versatile and portable than AC models.

starman wrote:

brogdenlaxmiddie wrote:I have one of those but it runs on AC power... what would the best way to convert it to DC use? ( Im no good with electronics like that so any help would be greatly appreciated )

Be sure whatever fan you put in a combustion cannon chamber is brushless. With brush motors comes sparks between the brushes and the spinning commutator...not usable with flammable gases.

Not to mention it could prematurely set off your cannon!

5700 RPM?! Whoa
I think the name woodchipper is very aplicapable.

I bet that will mix good enough

so how far have you come along so far on it

brother361 wrote:so how far have you come along so far on it

Well, I acquired a piezo igniter and some 4" schedule 80 fittings for the breech of the gun, as well as a 6" flange... I can finally finish the gluing. Once that's done, I can start fabricating stuff like the spark strip and fan assembly, and what-not.

Blitz wrote:

brother361 wrote:so how far have you come along so far on it

Well, I acquired a piezo igniter and some 4" schedule 80 fittings for the breech of the gun, as well as a 6" flange... I can finally finish the gluing. Once that's done, I can start fabricating stuff like the spark strip and fan assembly, and what-not.

sweet sounds awesome
its gonna be a behemoth