JGW3000 Posted January 21, 2016 Posted January 21, 2016 RohanBeckett - looks like the fish can breath easy as they can get there air pump back, That is a nice blower or compressor (strictly speaking, not a pump). Its a good idea to have the air storage tanks as well, helps to level out pressure fluctuations coming out of your air blower. Quote
andrewganschow Posted January 21, 2016 Author Posted January 21, 2016 Ive seen some of those compressors on online, but all are featured as having a max pressure of 350 mmHg. Or roughly 6 psi. Lego needs 30~35 psi. I wonder if that pressure rating is for water. Quote
dr_spock Posted January 22, 2016 Posted January 22, 2016 Ok, so I dug out the pump I bought, and gave it a proper test... for 6V.. it's actually very powerful! (that's a train/boat weight that it's lifting with ease, in the video!) Thanks for the demo. That definitely works much better than my fish tank air pump. How is it at 5V? I run my GBC outdoors off a 12V SLA battery with a 12V to 9V converter. I'm wondering if a 12V to 5V USB converter may power it? Quote
RohanBeckett Posted January 22, 2016 Posted January 22, 2016 I ran it at a few lower voltages, and it still seemed to work OK.. but I'll test again tonight was funny.. half hour after ceasing my test.. I went back to my test bench... flipped the valve lever... and it still rose up - slowly! there was still enough pressure in the system to lift the arm fully - in about 10 seconds. RB Quote
andrewganschow Posted January 22, 2016 Author Posted January 22, 2016 I ran it at a few lower voltages, and it still seemed to work OK.. but I'll test again tonight was funny.. half hour after ceasing my test.. I went back to my test bench... flipped the valve lever... and it still rose up - slowly! there was still enough pressure in the system to lift the arm fully - in about 10 seconds. RB I think ive found the answer, I just gotta find one of those pumps and a small converter. Thought about wiring one to a pf plug, but I like my motors to much. Quote
RohanBeckett Posted January 23, 2016 Posted January 23, 2016 I have a spare, dead M motor, so I might use the plug for that You could always just buy an extension lead, and cannabalise that... only a few dollars then Quote
andrewganschow Posted January 23, 2016 Author Posted January 23, 2016 That's a good idea. I'll pick up the pump and extension wire. Quote
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