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Car Forum / Driving, Maintenance, Tuning / General Car Topics / March 2006Cheap 20psi - 50 psi Pump
This isn't for a motor vehicle. I wanted a cheap low flow rate moderate pressure pump drawing less than an amp from a 12 v battery. It only needs to pump a few gallons an hour. Bret Cahill Find a place that sells weed/feed sprayers - the kind that pull behind a garden tractor on a small trailer. They sell 12 V. pumps. Or go to a wrecker and pull a fuel pump from a V6 engined fuel injection car (pump in the fuel tank) and run that submerged in your tank. Or get a tank suitable for pressurizing and after filling it, get a small 12V compressor to load the air charge. Or mount a small pump on a bike frame where the rear wheel would be and drive it with the bike chain. Hire a kid to do the pedalling. Pete >This isn't for a motor vehicle. > [quoted text clipped - 3 lines] > >Bret Cahill You left out those $3 drill pumps. Bret Cahill >You left out those $3 drill pumps. > >Bret Cahill Yeah, and I bet there si a way to use a 12V windshield wiper motor to drive it. Probably with a belt. There are likely other motors in junked cars that would work too. For awhile I was thinking of using a windshield washer pump -- they usually pump a few cc/sec --, backcalculating the psi necessary to get it to pump x feet over the roof when the nozzle tube is bent too high. Torcelli's 1/2 m v^2 = rho g h or something. Axial or centrifugal turbo compressors max out pressure when choked -- it's one or the other -- but I'm clueless on what would happen with the liquid centrifugal pump im my vehicle. It may be easier and cheaper to string a few drill pumps together in series and call it a day. Bret Cahill >For awhile I was thinking of using a windshield washer pump -- they >usually pump a few cc/sec --, backcalculating the psi necessary to get [quoted text clipped - 9 lines] > >Bret Cahill What are you trying to pump and for what? Maybe I missed part of this thread.... |
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