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JojoJaro
09-05-2008, 04:03 AM
How do you make the plastic blow out valve cover shown here?

http://www.youtube.com/watch?v=M3cOPDTl3ek

countryboy18
09-05-2008, 12:57 PM
take a 2" long piece of pvc pipe. i used 1/2 pipe. then get a cuppling that is the same size as pipe. cut the cuppling in half. glue one half on to the end of the pipe. drill a hole in you cell were you want to put it the size of the outside of the pipe NOT THE CUPPLING. sand the pipe so the other half of the cuppling can slide on and off very easy. put glue on the top of the cuppling that you glued push it into the hole with the pipe sticking out of the cell. then use what ever plastic bag u want. note the thicker the plastic the more presure it take to pop it. then slide the half the is not glued over the pipe that is covered with the plastic. tada. ha has a video of this. http://www.youtube.com/watch?v=GWpdtC6TJ8k http://www.youtube.com/watch?v=QlZN7Su2tL4
P.S. he used a end cap and just cuts of the top of it and he uses a reducing fitting insted of a piece of pipe. i saw the video and just used what i had. also read the remarks at the bottom of the second viedo. the plastic top could fail do to the heat in the engin.

hydrotinkerer
09-05-2008, 02:49 PM
You could use UHMW in .005thk it would take the heat and still burst if something happened. Its pretty inexpensive for peace of mind. Though not as cheap as plastic wrap.

JojoJaro
09-07-2008, 09:50 AM
take a 2" long piece of pvc pipe. i used 1/2 pipe. then get a cuppling that is the same size as pipe. cut the cuppling in half. glue one half on to the end of the pipe. drill a hole in you cell were you want to put it the size of the outside of the pipe NOT THE CUPPLING. sand the pipe so the other half of the cuppling can slide on and off very easy. put glue on the top of the cuppling that you glued push it into the hole with the pipe sticking out of the cell. then use what ever plastic bag u want. note the thicker the plastic the more presure it take to pop it. then slide the half the is not glued over the pipe that is covered with the plastic. tada. ha has a video of this. http://www.youtube.com/watch?v=GWpdtC6TJ8k http://www.youtube.com/watch?v=QlZN7Su2tL4
P.S. he used a end cap and just cuts of the top of it and he uses a reducing fitting insted of a piece of pipe. i saw the video and just used what i had. also read the remarks at the bottom of the second viedo. the plastic top could fail do to the heat in the engin.


Thanks.

What sort of plastic do you use? I'm thinking a Garbage bag.

countryboy18
09-07-2008, 02:01 PM
ya you can use that just rember the thicker the plactic bag the more presure it will take to pop it. you can try out diffrent types of bags and find out the best on. be carefull to keep that plastic away from a high temp it will melt and then leak. how do you plan on sealing the top of the cell. the part that screws in?

JojoJaro
09-07-2008, 05:35 PM
ya you can use that just rember the thicker the plactic bag the more presure it will take to pop it. you can try out diffrent types of bags and find out the best on. be carefull to keep that plastic away from a high temp it will melt and then leak. how do you plan on sealing the top of the cell. the part that screws in?

Rubber cap for 3" PVC. Those things are thick enough to support this. I've actually found some fitting from Lowe's that will allow me to screw the fitting tight against the rubber.

JojoJaro
09-07-2008, 05:36 PM
You could use UHMW in .005thk it would take the heat and still burst if something happened. Its pretty inexpensive for peace of mind. Though not as cheap as plastic wrap.


What is UHMW and where do you get them?

Q-Hack!
09-07-2008, 05:49 PM
I use a piece of Zip-Lock Freezer bag. Its heavy enough to handle the heat/pressure generated during electrolysis and will definitely blow out instead of exploding. I tested it out and it works well. I think the neighbors may have called the cops though...:rolleyes:

countryboy18
09-15-2008, 11:35 PM
ya i am planing on testing out my tommoro i wish i had a way of knowing how much presure it takes to pop the diffrent thickness of plastic. i will video tape it. haha