1/6th scale 1890's 30ft navy steam cutter (live steam)

[middle.road]

Amazing. . .

 

[tghsmith]

should have done this a while back,, grabbed some steel and with some drilling, filing, grinding and sanding I now have a decent pair of 7BA wrenches (if I can keep them out of slim's hands, it's a good thing he doesn't have pockets)

 

[tghsmith]

mounted the scale non-functioning thrust box,, it may actually help as a shaft support bearing when an eccentric to drive the condensate pump is mounted just outboard of it..

 

[tghsmith]

the engine is running well and is just down to final finishing (oiler lines, way quadrant, paint and other small details) next is the boiler feed pump, the navy used a small duplex with again their own sailor proof pump end,, it was also mounted vertical with the pump end low in the hull (below the water storage tank levels) this will be small, I took a set of cole's power models pump plans and reduced them by 1/3 giving a pump around 4" long (close enough for that scale vs function thing) over laid some navy pump line drawings and came up with a set of plans,, stock and parts on order, with a few days out of the shop I gave slim some instructions,, evidently he heard "do something with your lazy brass for the next few days" happy thanksgiving!!

 

[tghsmith]

loctited some brass together and milled the cylinder and pump bores,, started on shaping to blocks, and making the center sections,, turned a set jig rods to help keep things in alignment,,

 

[benmychree]

So far as I know, the Navy cutters all had vertical simplex feed pumps, I had one once upon a time, plus a cut away demo. Navy K engine and all the original blueprints for it.

 

[tghsmith]

all the plans and engineering I have show one or two duplex pumps of a sailor proofed navy design.. photo is the pumps and parts for the restored 40ftr from the USS New Jersey.. BB16 (including the bailey condensate pump) I get to try to make of those also.

 

[tghsmith]

using the rotary table on the mill started "carving" the pump block into shape, lots more work needed..

 

[tghsmith]

some cool little info on these small duplex pump valve arrangements.. both external and internal crossover type were made.. I'm staying with the external, I'll do watchmaking type work but not swiss watchmaking

 

[tghsmith]

worked on both ends, an arbor was turned to help mill the cylinder block to shape, steam chest and cylinder heads part were made,, getting lots of small assemblies together that will get silver soldered.. unboxed a new shop toy that shop be a good addition to the model boat/ship shop.. had lots of "help" with the unboxing..