Author Topic: 3/8 x 1/2 motor mounts for strength. (Read 1249 times)

Perry Rose · « **on:** July 27, 2018, 02:20:58 PM »

I use 3/8 x 1/2 aluminum channel, fill it with 1/4 ply and balsa. Then glue it into a crutch. drill the mounting holes, install brass 6-32 (in this case) inserts and butt them up against the channel. 2.4 ounces. Bullet proof.

john e. holliday · « **Reply #1 on:** July 28, 2018, 10:28:29 AM »

Driill holes in the section behind the fire wall and remove more weight. You can also taper it behind the fire wall.

FLOYD CARTER · « **Reply #2 on:** July 30, 2018, 10:09:18 AM »

You can do the same drilling holes and tapering with hard maple to save weight. The 1/2" edge of maple provides lots of glueing area to your fuselage doublers. This is important for transfering engine vibration to the fuselage structure.

Ken Culbertson · « **Reply #3 on:** July 30, 2018, 01:38:53 PM »

Quote from: Perry Rose on July 27, 2018, 02:20:58 PM

I use 3/8 x 1/2 aluminum channel, fill it with 1/4 ply and balsa. Then glue it into a crutch. drill the mounting holes, install brass 6-32 (in this case) inserts and butt them up against the channel. 2.4 ounces. Bullet proof.

This is a very good idea. Have you tries making it adjustable for swapping engines?

Ken

Author Topic: 3/8 x 1/2 motor mounts for strength. (Read 1249 times)

Perry Rose

3/8 x 1/2 motor mounts for strength.

john e. holliday

Re: 3/8 x 1/2 motor mounts for strength.

FLOYD CARTER

Re: 3/8 x 1/2 motor mounts for strength.

Ken Culbertson

Re: 3/8 x 1/2 motor mounts for strength.