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Doyle Rotary Parts: Drive Rods

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Uploaded by on Jul 1, 2010

This video illustrates the purpose of the drive rods and shows the machining involved in making the rods.

The rods took 14 minutes per side to cut for a total run-time of 28 minutes + deburring and reaming the holes.

Stay tuned for updates and more parts (we will upload as we go: these parts were machined just hours before uploading the video). Also, if you have any questions about the engine, design process or machining, we will be glad to answer them.

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Science & Technology

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Standard YouTube License

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Uploader Comments (ADoyle88)

  • We actually own two CNC mills. The DRE is a part time hobby and aircraft machining is the day job. The cut in the table actually happened a while back while making an aircraft part. If you look in the comments section on the overview page at our website you can see the most recent pieces we have machined for the DRE.

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All Comments (8)

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  • @manytoolsmike

    You are correct, this is not a very efficient way to fabricate parts.

    If this were a production part it would be extruded with the two holes slightly undersized and would take very little machine work to finish.

    When prototyping it is easier and cheaper to clamp down a piece of scrap and start cutting.

    From programming to finished parts took less than an hour.

    Look at "Engine Overview" on our website for other machined parts.

  • Seems like a waste of material to make it this way. Do you not have traditional machining equipment? If you used bar stock (or bar billets) you would save a lot of material and electricity. Or is your labor costs too high to produce them this way?

  • Very nice, but what did your boss say when you machined that rod shape right into the bed of his brand new NC milling table? See near the clamp at 1:13 ouch!

  • interesting copncept. hafd a similar idea myself years ago.

  • @thakillman7 Sorry, not everyone has a huge manufacturing company to get molds built for them so they can cast it then throw it in a forge to make it forged.... Most homemade and new inventions are made this way.

  • awefully inefficient method of production?

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