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Another abandoned project another muncaster

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Jeff123:
Hi All,
Well here is another abandoned project now resurrected from "under the bench". About time I got it finished.
Yes it's another muncaster from his excellent 1912 book. The simple line drawings from the book are not complete but within the book there is enough information to make the model.
This is my first two cylinder engine after 10 years of modelling. The machined/fabricated cylinders are arranged back to back on a central valve block. I do intend to make and fit the reversing valve.
The the photos reveal very much how it was the last time I worked on it. The oak box bed is extra deep to accommodate some pipework from the reversing valve.
More to come, hope it's of interest
Geoff

Sanjay F:
Definitely interested and following along; I admire your ability to decipher the line drawings and machine the parts, I struggle with that particular element of our chosen hobby. I will take a look the book though  :popcorn:  :ThumbsUp:

Jeff123:
Hi All,
Thanks for the post Sanjay. In reply yes the line drawings in the book are basic so I have done some metric  CAD work to help with the build.
Here is some more progress on the top end. The photo shows the entablature with the two alloy plummer blocks and brass bobbin bearings. These are copies of a pair in one of Jason's designs. I like the way he relieved the sides of the blocks leaving the bases a little wider.
The remaining photos show a simple jig which I used to assemble the crankshaft parts. The two spacers with locking screws accurately position the spacing of the double cranks. One double is clamped horizontal and the other set vertical with a tri square. They are glued with loctite 638 and then later pinned, so a real "belt and braces" job. Note the webs on the cranks, not included in original Muncaster drawings. I like webs from a practical as well as aesthetic viewpoint.
The engine is a little further on now with more to come
Geoff

Jeff123:
Hi All
Well here it is, all set up and running smoothly. Really pleased, it took some time but was well worth it.
Still a few things to do, adding the reversing block and parts, painting, final finishing etc. The flywheel is an old feed screw hand wheel, ok but I may change it for a cast spoked wheel around 60mm diameter. I'll see what I can find. More to come including a video but will be a while as other summer stuff is taking precedent.!!!!!
Geoff

Michael S.:
Well done.
And when it's finished, it's a small engine for a paddle steamer.

Michael

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