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+--- Thread: 32x40 H Gas Engine (/thread-2056.html)
RE: 32x40 H Gas Engine - krv3000 - 10-15-2014
its shaping up nice
RE: 32x40 H Gas Engine - Brian - 10-16-2014
Hi Tom.
The crank will be built up on a one piece shaft and the center cut out when its all in line, the drawing shows the center between the webs still in place. I will probably put in the keyway's for the flywheels and screwcut the retaining threads before removing this section,
A lot of thinking to do before cutting metal. meanwhile I am moving on with the connecting rod.
Brian.
RE: 32x40 H Gas Engine - Mayhem - 10-16-2014
I'm watching this thread with interest Brian. Thank you for sharing.
RE: 32x40 H Gas Engine - Brian - 10-20-2014
[attachment=9423]
The connecting rod blank was set up in the mill and the holes for the cap bolts drilled,
The cap end was then cut off.
[attachment=9424]
The cap blank was made the correct size and the rod blank trimmed.
[attachment=9425]
The cap blank was reunited with the rod blank and using a series on slotting drills the bore was opened to 16mm
BUT on measuring it was 15.5 ***?- chinky cheap tools.
[attachment=9426]
Luckily I had not moved the X Y so i fitted the boring head to finish the job.
[attachment=9427]
Now waiting for the next stage.
[attachment=9428]
Onward and upward Brian.
RE: 32x40 H Gas Engine - Brian - 10-24-2014
After drilling the small end the rotary table was fitted along with a pin to fit the small end and the OD milled to shape.
[attachment=9447]
The sides milled to shape.
[attachment=9448]
[attachment=9449]
Just needs a clean up.
[attachment=9450]
Onward and upward.
Brian
RE: 32x40 H Gas Engine - EdK - 10-24-2014
Brian,
What type of steel is that you're machining?
Ed
RE: 32x40 H Gas Engine - TomG - 10-24-2014
Looks like type 6061 to me.
RE: 32x40 H Gas Engine - EdK - 10-24-2014
(10-24-2014, 09:38 AM)TomG Wrote: Looks like type 6061 to me.
That's my guess too Tom.
Ed
RE: 32x40 H Gas Engine - DaveH - 10-24-2014
Nice work Brian
DaveH
RE: 32x40 H Gas Engine - Brian - 10-25-2014
Hi all
the alloy is 5083 I hope it will be strong enough it will have a bronze big end bearing with a positive oil feed through the crank pin.
Getting material is a big problem for me local suppliers' only have Black steel that is awful to turn but lots of stainless because of the marine -- olive oil and wine industry
Brian