stunthanger.com

Building Tips and technical articles. => Building techniques => Topic started by: Dennis Toth on January 19, 2012, 09:55:11 AM

Title: Molding dummy engine parts
Post by: Dennis Toth on January 19, 2012, 09:55:11 AM

Guys,
Has anyone done a mold (vacuum or other) of an engine from plastic or other materials to be used as a dummy engine? I want to mold a Drone Diesel head and cylinder to use as dummy engines (I like the wedge look of the Drone)? What material works, what technique did you use?

Best,            DennisT

Title: Re: Molding dummy engine parts
Post by: Tim Wescott on January 19, 2012, 10:01:04 AM

I'd turn it from a dowel.

Or bid on one or both of the two that are up on the 'bay, and forget this "dummy engine" stuff.

Title: Re: Molding dummy engine parts
Post by: Randy Powell on January 19, 2012, 11:05:32 AM

I was thinking about building an electric plane and molding a PA engine to put in the cowl.   ;D

Title: Re: Molding dummy engine parts
Post by: Steve Helmick on January 23, 2012, 09:24:53 PM

Quote from: Randy Powell on January 19, 2012, 11:05:32 AM

I was thinking about building an electric plane and molding a PA engine to put in the cowl.   ;D

That right there is a great idea, Randy! You could pull the "NV" out to arm it for flight.  y1 Steve

Title: Re: Molding dummy engine parts
Post by: PJ Rowland on January 27, 2012, 07:29:12 PM

Randy : I was thinking of molding an electric engine for my PA plane!

Title: Re: Molding dummy engine parts
Post by: wwwarbird on January 27, 2012, 10:59:54 PM

 I'm sorry, but the whole idea seems like a large waste of time. I would say to do whatever the display model may be the justice of mounting a real engine.

Title: Re: Molding dummy engine parts
Post by: Avaiojet on February 17, 2012, 06:42:34 AM

Micro balloons and resin, after it's cured with the proper mix, allows for shaping just about anything. Pour it in small dixie cups, hardens into a block.

I've made interior parts and scale radial cylinders using this stuff. So has plenty of other guys that make scale parts.

Time consuming, but it's been done by plenty of scale builders. Well, R/C that I know of anyway.   n~

Charles

Title: Re: Molding dummy engine parts
Post by: Howard Rush on February 17, 2012, 10:47:12 AM

Quote from: Dennis Toth on January 19, 2012, 09:55:11 AM

I want to mold a Drone Diesel head and cylinder to use as dummy engines...

That is very cool.  I wonder if there's some Pavlovian mechanism that would enable a person to smell it. 

If you can make a 3D CAD drawing of the cylinder, I can get the part made by fused deposition modeling:  http://www.thecreatezone.com/The_Create_Zone/RP_%26_FDM.html

Title: Re: Molding dummy engine parts
Post by: Dan Bregar on February 17, 2012, 04:30:21 PM

Dennis

Very cool idea !  This could catch on.  Beautiful !!!  ;)

Dan