Potty Over Crank Wall Engine

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NickG:
Wow, that's really impressive Stew - it is interesting motion to watch too. Well done, a great feat to see something you like in a museum and turn it into a scale model. :bow:

Nick

Dean W:
Oh, it turned out so well, Stew (naturally!). What a fine job, and the sound is pure symphony. It is definitely one
of those "watch-it-run-for-hours" engines, and I watched the vid more than once... A lot more than once!
Thanks for a great build thread!

Stilldrillin:
That's pure, "Poetry in Motion", Stew! :D

Blummin well done! :clap: :clap: :thumbup:

David D

sbwhart:
Thank you all again Chaps

So far its bin an interesting project, some of you Guys have commented on its size, it did come out bigger than I had in my minds eye, but in its original state it's not a very big engine, it would comfortably fit in a suite case, the model loco guys like to build narrow gauge Locos as they come out as large engines I thinks its something to do with scaling. The original engine has a fly wheel of about 24" dia I used a 7" fly wheel about 1/3 full size, and scaled everything from that, I think if I had used a 4" fly wheel some of the parts would have come out too small to comfortably make.

I don't intend running it on steam I don't think its performance on steam would be very good as I made the steam galleries on the small size.

I went away from the drawing I posted quite a bit:-as the build progressed I saw better or alternative ways of doing things, so at some point I will update them.

When I come to finish the engine off I want to round the sharp corners off and fill internal corners with something so that it looks more like a casting, can any of you guys suggest a filler.

Stew

Bogstandard:
Stew,

You can use car body filler, but I found it very messy and hurtful on the fingers getting it to the right shape after it has set. You don't really have the time to get things perfect before it goes off.

When modifying parts on the figures I used to do when making model boats, I used Milliput.

Mix the two parts of the putty together, push it into where you want to change the shape, then while still soft, mould and carve to shape, just like modelling clay. Once to roughly the right shape, using wet fingers, blend everything in position so that it looks like part of the original. Leave to set overnight and paint straight over the top, you would never be able to tell it wasn't part of the original. You can even texture it if needed, before it goes fully hard after a couple of hours.

John

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