Gallery, Projects and General > Project Logs
Popular Mechanics Boiler
vtsteam:
Pete, thanks, that would be cool! I've got a gauge now, looking to hydrostatic test the boiler after I make a pump, still plenty to do.
Tim, sorry, missed your earlier post - thanks so much! :beer:
vtsteam:
Not much time today for fun stuff, but I did make a start on a hand pump. Rummaging around in my scrap barrel, I found this cutoff of what I think is brass. Could be bronze, I'm not sure. I have a small half nail keg of stuff like this -- mixed brass, bronze, and sintered bronze material that I got in an auction (real, not online) at a closed Hayward-Tyler machine shop.
Anyway, I thought this might work as a base:
vtsteam:
Milling a foot:
vtsteam:
And ended up with a blank for the base by supper time. Haven't quite decided how I'm going to do this pump yet, guess I'll figure it out tomorrow! :scratch: :coffee:
vtsteam:
Bah, chores all day, and then company for supper. Well, the last was good, but nothing much done on the pump except puzzling out how to do the valves with materials on hand.
I do have some stainless steel ball bearings 3/16" dia. and some 1/4" brass pipe for the pump body. But it's not exactly clear how I'll fit it as two check valves and pipe connections in the pump base.
I've looked in ME's and a few books for hand pump plans for ideas, but it's a subject that hasn't got as much attention as I would have thought. The few designs I've found in print often lack valve details, or are over-complicated or use odd thread sizes and large machined chunks of brass stock.
I want something simple, any threading ought to be managed with stock taps and dies and shouldn't require sculpting $50 of swarf out of a solid block. Ideally brass plumbing fittings might be used or adapted to the job.
I'm thinking that 3/16" balls would probably need a 1/8" bore at the seat. I have some brass compression to NPT straight adapters that have a slightly larger bore at the pipe taper end -- maybe I can sleeve it with some 1/8" ID brass tubing, soldered in as a seat.
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