flyrotary@lancaironline.net Mailing List Archive

Hello Robert,

I ran into a slight speed bump.

Someone gave me a Velocity RG. (Yes …. I really mean he gave it to me. N5325) It’s been sitting in a hangar for the past 11 years due to some rather minor issues. I’m focused pretty much on that at the moment but I expect to have it back in the air by the end of June then it’s back to work on the rotary.

The end result will be no more renting airplanes and at the same time building canard time for the insurance underwriters.

In the meantime I am getting better with the 3D CAD software.

Sent from Windows Mail

From: Rob Bollinger
Sent: ‎Thursday‎, ‎May‎ ‎1‎, ‎2014 ‎8‎:‎50‎ ‎PM
To: Rotary motors in aircraft

Hi Thomas,

Any news on the 20B manifold.

Robert Bollinger

On Fri, Dec 20, 2013 at 9:09 AM, Thomas Mann <tmann@n200lz.com> wrote:

Well .... yet another new development.

I'm sure that many of you are familiar with the 3D printing process.

I was contacted by a foundry supply company. After a bit of chatting he suggested that I create the manifold in 3D CAD software and have them 3D print it in wax, ready for casting.

The process even takes into consideration the shrinkage of the particular metal you are pouring. I believe Aluminum is 1.3% (or there about.)

I was already modeling this in 3D with Rhino but I had my CNC hat on, not my Investment Casting hat. I just could not imagine how a CNC could handle this (plus that would be very expensive.)

Anyway, if this does work out, once I have a working prototype, (and if it is cost effective) I can start cranking these out at will.

I'll be moving on to the air-box (cool side intake) once this is done.
T Mann

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Robert Bollinger

MR722 MUM

Fairfield, IA 52557

(641)919-3213

rob@mum.edu