Three Cylinder Radial Engine

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chuck foster:
looking good stew :thumbup: :clap:

chuck :wave:

Divided he ad:
Nice! You don't half like a challenge!!!

looks like this retirement thing is going to be a lot of fun for you Stew :ddb:

Looking forward to seeing this unfold :thumbup:

Ralph.

sbwhart:
Well a bit more done today

With all the cylinder holes rouged out, brought the first one to size, then as I wanted all to be the same, it'll make things easy down line, the boring bar was clamp up and the other two finished at the same setting.

One of the reasons I've reproduced the drawing in cad was that I wanted all the holes dimensioned from the centre line of the cylinders this way I can make best use of the DRO, so to drill the holes move the table to the x and Y location drill the hole, rotate the spin indexer drill the same hole in the other face, spin index drill the same hole in the third face reposition the table x and Y etc etc

Like this

And here we are with all the holes drilled in the horizontal position including the breather hole tapped 3/8*40 ME I'll tap the M3 holes on my tapping table.

I enjoyed that it took me just over an hour.

Have fun

Stew

Stilldrillin:
Stew,

The way you tackled that op looks very perfeshnial...... :thumbup:

David D

sbwhart:
Thanks guys

Got a bit more done this morning.

Took the chuck off the indexer and mounted it on the Rotary table, There was no real need to mount it on the rotary table but as I was planing to use the PCD feature of my DRO for the first time to drill a sequence of holes, I was edging my bets, and besides it would be easy to clamp and line things up with the RO.

Not much head space:-

First job get one face of the Hex level with a DTI.

Next centre the bore with the centre line of the quill:- to do this you rotate the quill and manipulate the X and Y until you have zero clock movement

Then set the parameters into the DRO:- Centre, PCD, number of holes, start and end angles.

Then all you do is set it at hole 1 move the x and y until both read zero your on position for hole 1 repeat for hole 2, et etc

At first I just slightly marked each hole then checked that all was OK before centre drilling and then drilled for M3.

Then with the job still in the chuck back to the lathe for parting off.

I was really pleased just how easy that was with the DRO it really came into its own with that job.

:D :D :D :D :D

Cheers

Stew

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