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Three Cylinder Radial Engine
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NickG:
Very nice Marv. These are deceptive, they look so simple from the outside!

Nick
sbwhart:
Hi Chaps

Thanks again guys for your comments and interest

Had a right good do in the shed today.

First bit steam chest, turned out of a bit of 1 5/8" ally:- turn od then a big drill down the midle bore to size, transfer over still in chuck to the mill clock up OD to line up with quill and drill the holes on the PCD, the DRO realy does make this an easy job.





Part off and face to length:- job done



Next bit steam chest cover this is a bit more tricky as its not very thick:- turn up OD, turn step then with a trepan tool carve out the groove in the face.

Here we are trepanning



Drill and tap 1/4" * 32 ME



Over to the mill still in the chuck for drilling PCD

Back onto the lathe for partin off

Turn a threaded mandrel 1/4" * 32 ME.



And screw the cover on, then very gently small cuts and a sharp tool face it off to length and turn register step to fit in steam chest.



Thats another bit done.

Next up bearing housing:- Chunk of 2" ally skim up OD then turn up reduced diameter, the drawing calls for this to be tapered, but I'll need to chuck on the taper to do the other end:- forget it, I'll turn it parallel, if I decide I want it tapered I'll set it up on a lose mandrel when I've got the rest done.

First centre drill then bigger and bigger drills finishing up with a 3/4"



Then with my favourite boring bar bore 7/8" for bearing.



Part off



At that called it a day.

This is the steam chest and cover in place and the part finished bearing housing.



Have fun

Stew
raynerd:
This is coming together really fast - incredible work.

Chris
Bernd:
Really starting to look good there Stew. You've progressed quite fast on that build. :thumbup:

Can't wait to see and hear it run.

Bernd
NickG:
Looks stunning Stew. Brilliant. Getting tool envy over your DRO, I've used them before and loved it, makes things a lot easier and the PCD feature looks really good.

Nick
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