Small Axle water Pump

[Rob]

not sure if its the correct place to put this, but im after a cross section of a small axle water pump.

i need the body to be about 3/4" long, 1/2" wide and 1/2" deep, so fairly small.

do they work by 2 clack style valves, 1 set to let water in to the valve on the out stroke, the other to let water past when on the in stroke?

if it works on this principle, it will be no problem to make.

thanks

 

[Kermit]

Maybe one of these would work? They have lots of illustrations

http://books.google.com/books?as_q=...as_drrb=c&as_miny=&as_maxy=&as_isbn=&as_issn=

Kermit

 

[shred]

A small oscillator gets pressed into service as an axle pump on some old model steam engine designs. Doesn't even need valves, though it may leak a bit if the port face isn't perfect.

 

[Rob]

A small oscillator gets pressed into service as an axle pump on some old model steam engine designs. Doesn't even need valves, though it may leak a bit if the port face isn't perfect.

yeh i have thought of that, might try it on one of my other engine.

 

[Noitoen]

This guy uses an injector to "pump" water into the boiler. Check out the rest of the site, it's in Portuguese but I'm sure that Google will do a good job with the translation. http://vaporvivo.no.sapo.pt/estrutura.htm

 

[tel]

Pumps are pretty easy to do - this one is a hand pump, but the principal is the same - just eliminate the waggly bits and hook it up to an eccentric on the axle.

 

[Rob]

Pumps are pretty easy to do - this one is a hand pump, but the principal is the same - just eliminate the waggly bits and hook it up to an eccentric on the axle.

thanks very much, excellent.