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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Perry Rose on December 14, 2020, 10:34:56 AM

Title: Printed motor mounts.
Post by: Perry Rose on December 14, 2020, 10:34:56 AM

What glue is best to secure the mount to the fuselage?

Title: Re: Printed motor mounts.
Post by: Dennis Nunes on December 14, 2020, 12:36:12 PM

Hi Perry,

I used "Bob Smith Industries" 30-minute epoxy on my profile 3D mount for Okie Air Model Products.


Dennis

Title: Re: Printed motor mounts.
Post by: Perry Rose on December 14, 2020, 12:38:29 PM

Thanks Dennis, that's what I have. I've been wanting to try one for a while.

Title: Re: Printed motor mounts.
Post by: Dennis Nunes on December 14, 2020, 02:34:35 PM

Quote from: Perry Rose on December 14, 2020, 12:38:29 PM

Thanks Dennis, that's what I have. I've been wanting to try one for a while.

The other thing I forgot to mention regarding the mount is roughing up all the glue surfaces. I also enlarged the cast in-place dimples to allow for a better glue surface. This may be an overkill but I sleep better at night.  ;D

See attachment.

Dennis

Title: Re: Printed motor mounts.
Post by: ericrule on December 16, 2020, 11:55:26 AM

Wow! Dennis that mount is really cool.

I just love to see people using new technology to improve our hobby. Thanks for attaching the pictures. Do you have a printer or did you get it done by one of the services?

Title: Re: Printed motor mounts.
Post by: Dennis Nunes on December 16, 2020, 02:18:33 PM

Quote from: ericrule on December 16, 2020, 11:55:26 AM

...Do you have a printer or did you get it done by one of the services?

No I don't have a 3D printer. These mounts can be purchased from Okie Air Model Products. Russel has two versions, one for profiles and one for a built-up fuselage. https://okieair.com/shop/ols/products/printed-motor-mount (https://okieair.com/shop/ols/products/printed-motor-mount)

You can get them with built-in motor offset for Bad Ass, Cobra, EFlite and Plettenburg motors. But you will need to ask Russel about the offset as I don't see a way to select it on the website.


Dennis

Title: Re: Printed motor mounts.
Post by: Howard Rush on December 23, 2020, 03:42:16 PM

Is heat a problem with these mounts?  What plastic do they use?

Title: Re: Printed motor mounts.
Post by: Dennis Nunes on December 23, 2020, 04:26:39 PM

Quote from: Howard Rush on December 23, 2020, 03:42:16 PM

Is heat a problem with these mounts?  What plastic do they use?

Howard,

I have almost 70 flights on my Circulas 46 IIe profile with the 3D mount from Okie Air Model Products with a Cobra 3515-18 motor. So far it appears to be working very well and is very solid. As far as the plastic that is use, I don't know.


Dennis

Title: Re: Printed motor mounts.
Post by: Dave Adamisin on January 15, 2021, 09:19:24 AM

Quote from: Howard Rush on December 23, 2020, 03:42:16 PM

Is heat a problem with these mounts?  What plastic do they use?

Hi Howard. I am the source for the mounts. They are made with petg. Specifically, this petg:

https://www.3dxtech.com/petg-filaments/max-g-petg/

The first mounts were made with pla and there was one heat failure. "Hot day in Texas" yada yada..... ::) so I switched to the petg. Slightly higher glass temp but much more gradual failure mode. ABS and PC are options but a pita to print. I have a couple mounts I made for extreme situations made from PC.

Title: Re: Printed motor mounts.
Post by: Howard Rush on January 15, 2021, 04:51:18 PM

Thanks for the information and the link.  PLA vortex generators distort on a hot day.  I suspect Dali used PLA to print clocks. 

Title: Re: Printed motor mounts.
Post by: Dave Adamisin on January 15, 2021, 05:03:23 PM

Quote from: Howard Rush on January 15, 2021, 04:51:18 PM

Thanks for the information and the link.  PLA vortex generators distort on a hot day.  I suspect Dali used PLA to print clocks.

For sure and maybe his glasses.... Also, petg is much less affected by uv..