Air Machinegun Forum

General Air Machinegun Discussion Category => Building Projects => Topic started by: DU-BB on November 14, 2015, 05:31:22 PM

Title: Turn this into a pump?
Post by: DU-BB on November 14, 2015, 05:31:22 PM

http://www.ebay.com/itm/MAL16x250-16mm-Bore-250mm-Stroke-Sinlge-Rod-Air-Cylinder/230917551103?_trksid=p2047675.c100009.m1982&_trkparms=aid%3D777000%26algo%3DABA.MBE%26ao%3D1%26asc%3D20131227121020%26meid%3Dccb9f4fb73294e0aadd0442a6f8692e4%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D170630538437

A couple of one way valves, perhaps? This makes me think of the diy compressors I have seen, as well as the pressure boosters they have. It might be possible to build one on the cheap (which is more fun that throwing money at the problem) if combined with a short stroke, wide cylinder. Like this, maybe:
http://www.ebay.com/itm/2-SMC-DOUBLE-ACTING-AIR-CYLINDERS-1-STROKE-CMB30-01-8575/111820305370?_trksid=p2047675.c100009.m1982&_trkparms=aid%3D777000%26algo%3DABA.MBE%26ao%3D1%26asc%3D20131227121020%26meid%3Df2bc1f48ad8b4878961f48e42b0d4f87%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D230917551103

Title: Re: Turn this into a pump?
Post by: camracer on November 16, 2015, 06:49:22 AM

I want to build a pump. And it should be cheap to make.

You might find this interesting:

http://www.parker.com/literature/Industrial%20Cylinder/cylinder/cat/english/0106c002.pdf (http://www.parker.com/literature/Industrial%20Cylinder/cylinder/cat/english/0106c002.pdf)

Check out page 82, "Theoretical Push Pull Forces"

Title: Re: Turn this into a pump?
Post by: camracer on November 17, 2015, 01:16:53 PM

I like the way this pump was put together. Simple and very rugged.

https://www.youtube.com/watch?v=ZpJVs6L-zYY