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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.
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Unread postAuthor: Zeus » Sat May 14, 2011 7:06 pm

Wear dish washing gloves, it stops up to 2kV, but don't use them for lethal currents.

Chemical gloves are better, as the electrodes are copper just tap them with an insulated screwdriver.
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/sarcasm, /hyperbole
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Unread postAuthor: saefroch » Sun Jun 05, 2011 8:36 pm

PROGRESS!!!!

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It was a nice and shiny virgin piston... then I had to vise it to thread the back end...
Then I oiled it. To prevent rust, of course
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Unread postAuthor: Davidvaini » Sun Jun 05, 2011 9:21 pm

get one of those rubber jar openers and put it around anything you are putting in the vice, that way it wont damage it. :D
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Unread postAuthor: saefroch » Mon Jun 06, 2011 5:36 am

I tried that :D

Incrementally tightened the vise until it could hold the part, but my vise put holes in the rubber when I got it there. :?
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Unread postAuthor: Crna Legija » Mon Jun 06, 2011 5:41 am

get some soft jaws

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Unread postAuthor: Labtecpower » Mon Jun 06, 2011 7:23 am

...or ben two copper plates to fit in the vice. The soft metal won't damage stainless steel.
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Unread postAuthor: saefroch » Sun Jun 19, 2011 11:40 pm

Just an idea I'm throwing together in the hopes that it works. Some progress below:
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Unread postAuthor: saefroch » Mon Jun 20, 2011 9:18 am

Progress has been made, but camera battery is dead. Will post pictures when battery is charged and epoxy is cured :D

EDIT: Gaaaaa went overboard with the curing temperature. Curing epoxy runs like crazy at 400F
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Last edited by saefroch on Sat Jun 25, 2011 8:24 pm, edited 1 time in total.
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 20, 2011 11:07 am

saefroch wrote:Gaaaaa went overboard with the curing temperature. Curing epoxy runs like crazy at 400F


:D

Patience is a virtue, stcik to 50 degrees celcius max and wait :) remember that heating is also causing your components to expand, meaning they will contract when you return to ambient temperature, in some cases this is enough to make a joint leak.
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Unread postAuthor: saefroch » Mon Jun 20, 2011 1:16 pm

Yeah... at least this component will be entirely within the chamber, so no worries about leaks.

Sanding glass is a female dog. Taking a break now, but I'll probably have something this evening.
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Unread postAuthor: saefroch » Fri Jun 24, 2011 9:50 pm

I have 133t ski11z. I made type 304 SS rust.

Epoxy adhesion to polyolefin heat-shrink tubing is being tested.
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Unread postAuthor: saefroch » Sat Jun 25, 2011 8:22 pm

Epoxy adhesion to polyolefin heat-shrink tubing is indeed poor, but I'm not sure if I can cause a shear failure, because I was only able to evaluate the tensile adhesive strength in preliminary testing.

More practical test setup is curing right now. :D
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Unread postAuthor: saefroch » Mon Jun 27, 2011 3:35 pm

QUADRUPLE POST. Is anyone reading these?

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I've lost a nipple :wink:, but the McMaster order including the replacement and parts for a stock should be here in about three days.
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Unread postAuthor: Gun Freak » Mon Jun 27, 2011 3:38 pm

I'm watching... just waiting for something exciting :lol:
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Unread postAuthor: POLAND_SPUD » Mon Jun 27, 2011 4:31 pm

Is anyone reading these?
Are you surprised ??

the only person interested in epoxy just stated that
epoxy is for noobs
:D
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