"A Beginners Engine" From Model Engineer.

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sbwhart:
If you have all the bits made my as well give it a try just for fun before you remake.
As youre breaking taps try using a slightly larger tapping drill you will still get a good thread

NickG:
I always go 1/2 turn forward 1/2 back too and usually withdraw completely at least once to clear swarf. Still get the odd breakage though. Are they broken on cover bolts or for the valve chest? Could turn cover a bit and re-drill if it's there.

ParCan:
Hi Nick

I have an M2 in the Valve Chest. That was my fault and totally accept that. Simply to ham fisted on the Back turn.

I have an M3 in the Cover End cover.
This one I don't get. I was gentle and using a Jig to hold everything square.
I had Cutting Fluid and knowing that this iron is not the best thing to thread was using fair force and taking things slowly.
The tap had been in and out probably twice to clear dust and swarf.

Anyway - everything is together here and now. The 4 Crosshead pillars are slightly to tall causing the Piston rod to bind. That's easy enough to sort.
The eccentric was fun to get setup but the throw is now correct. Just need to sort the timing.

As the drawing was not quite correct I have to sort out how I mount the flywheel. I'll prolly put a pin through the Shaft.
Plan B would be to Knurl the shaft and some Stud lock maybe.

That should all be doable tomorrow am, then I'll see if it's a runner.

ParCan:
After a fun week in the workshop I have a completed engine.

Gasket gunk applied to the end caps and valve.
Oil in the air pipe

Time to see if it runs I suppose....

and

I'm rather pleased with the results....

NickG:
Great result! Well done :clap: :bow: :beer:

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