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Help me Build my piston
Posted: Thu Dec 15, 2011 8:41 pm
by Marffy
I need help making my piston. I'm wondering What to use for everything. My shop class has a lathe so i'm thinking I can make the piston out of aluminum? I tried using foam balls for a bumper but it didn't work out well. And for a seal should i use a piece of bicycle tube or rubber sheets? I'll probably go to the hardware store this weekend so any suggestions for materials to use would be great. Also if you have picture of your piston and you posted that would be great. I really need some ideas...
Posted: Thu Dec 15, 2011 8:57 pm
by Hawkeye
Your signature is delivering on its promise.
Posted: Thu Dec 15, 2011 9:27 pm
by evanmcorleytv
are you using this for a small QEV, or a large barrel sealer?
Re: Help me Build my piston
Posted: Thu Dec 15, 2011 9:37 pm
by velocity3x
Posted: Thu Dec 15, 2011 10:00 pm
by jackssmirkingrevenge
I would go for delrin/acetal or uhmwpe, even nylon if it's available. synthetics are easier to machine and lighter, giving you better performance for less effort.
Posted: Thu Dec 15, 2011 11:39 pm
by Marffy
small. 1" piston.
Thanks for some ideas...
If i find some nylone stuff i'll use it.
Posted: Fri Dec 16, 2011 7:57 am
by jrrdw
Member since July 2009 and such newbish questions?
Someone has not payed attention. I haven't had to say this in a long time but it's a 'fitting' time. UTFS!
There's a play on words in there to help you out if you can 'find' it.
Posted: Fri Dec 16, 2011 8:12 am
by Hawkeye
Half the time at least a piston material can be found that's already a slide fit inside the pipe of choice so having a lathe etc. is irrelevant.
That means the average piston assembly requires cutting off a section of Delrin etc and screwing a pice of neoprene from roofing supplies onto the face.
A daunting task.
Posted: Fri Dec 16, 2011 12:11 pm
by mattyzip77
There are a million how tos here and on youtube! Do some research dude!!! Also I use a rubber sanding drum as a piston in one of my cannons and in my opinion its better than a bolt/washer piston. You can get them at harbor freight for like 8 bucks!! Good luck!!!
Re: Help me Build my piston
Posted: Fri Dec 16, 2011 2:22 pm
by velocity3x
Marffy wrote:I need help making my piston
This is the
3rd time you've gone down this road and you STILL don't get it???
Maybe it's something you shouldn't attempt.
1St time:
http://www.spudfiles.com/forums/viewtop ... tml#266636
2nd time:
http://www.spudfiles.com/forums/viewtop ... tml#277029
Re: Help me Build my piston
Posted: Fri Dec 16, 2011 3:05 pm
by jrrdw
No more spoon feeding...or flaming necessary!
Locked.