How to mount electric motors on foamies ?

Started by anwar, September 04, 2009, 12:48:40 PM

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anwar

When you get a new mobile sim embedded in a credit card sized plastic sheet, you typically discard the rest of that credit card sized sheet of plastic after pulling out just the sim card.  I believe Azhagu used that sturdy piece of plastic.

Sample picture :

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azhaguvel

Yes anwar exactly the same thing. I think this method can be used only for small foamies with small motors.

PankajC

Well, I think it depends on whether the model is a a tractor or a pusher.

In a tractor configuration, the prop is trying to take the motor mount forward while the weight of the plane resists this movement. For this reason, a strong firewall and strong bond between the plane and the motor is needed.

In a pusher configuration, the motor is pushing the plane so the force of the motor is actually strengthening the bond between the firewall and the plane. In this case, I am just using cellotape to stick the motor to the plane. It works

Spektrum DX6i | EP Pusher Trainer | EP CUB |

saurab


Im using the same method as azhaguvel has suggested i.e. sim card plastic method . But i wanto ask one thing that , can we use the double sided tape to attached the plastic to fuse , is it durable ?

can double sided tape withstand the motor during flight ?

im using the following motor :

http://www.hobbyking.com/hobbyking/store/__18324__TURNIGY_2204_14T_19g_Outrunner_AUS_Warehouse_.html

thank u .....!!

- saurab.


saurab

waiting for someone's reply .............   :help:  :help:

- saurab.

anwar

You should use some type of glue.  Hot glue or 5 minute epoxy are commonly used for this.

For a pusher configuration, double sided tape may work OK, as the motor pushes against the tape, instead of pulling away from it.
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Swapnil

Quote from: anwar on January 10, 2012, 01:55:01 AM
....
For a pusher configuration, double sided tape may work OK, as the motor pushes against the tape, instead of pulling away from it.

Double sided tape works great under pressure. I once saw on nat geo a strength test where two cars were pulling a cable joint by double sided tape in opp. directions!

rcpilotacro

#32
Carrom Striker is another option, you can sand it to reduce its thickness, buy the cheap ones, it costs less, less weight and does hot cut easily
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A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

sundaram

Absolutely  :iagree:

Most of my foami mount has been carrom strikers

SunLikeStar


rastsaurabh

Dominos manufactures 22mm motor mounts....

Pizza hut manufactures 28mm +- 5mm Motor mounts......

See pics for yourself..... :o  :o  :o

These are bit expensive somewhere around 300Rs for 3 !!!! but you get free pizza (medium or bigger) with them  ;D

One such mount on my wing wing lookalike......

sajid6300shaikh

Quote from: rastsaurabh on September 27, 2012, 10:42:57 PM

These are bit expensive somewhere around 300Rs for 3 !!!! but you get free pizza (medium or bigger) with them  ;D

Lmaozz, Good one there..

murcielago

HaHa,

U can send the free Pizza to me....Neways cool innovative idea of using those plastic supports...

Regards

kumardasai

Blazer, Sky Surfer V3, Fun Jet, WLToys V913, WLToys V977, HiSky HCP 100S, Skyartech Wasp V3.

ebinmoothedam

dreamer.

laxmansuthar

i am using 3.mm ply & cut into round shape & make 4 nos (90 degree) slot on ply edge...& fix through epoxy..
attached image...

laxman
Futaba T7c.2.4, boomrang trainer 46., 60size Extra 300s, Raptor 30v2, raptor 50 Titan, electric biplane, Thunder Tiger raptor 50 titan Se, J3 piper cub, Tarot 450 sports, Align 500,

b4ggu

Nice one Saurabh.... :)   (:|~...I am hungry now...
Deepak

vineet


romanxdsouza

i often move my motor from 1 fuse to another plane fuse ,im using ply as motor mount.motor is 2204. by removing motor every time the threading on the ply is getting loose the screw is fitting loosely and doesnt give a tight fit ,any one tried something were v can keep moving the same motor

K K Iyer

#44
Removable nose, toothpicks, rubber bands. Toothpick pinning required as that is a 300 watt motor! See pics.

MOD EDIT
Straightened images ;D

theleabres

use blind nuts on the back of the ply - then the screws won't get loose

romanxdsouza

what exacatly is blind nut.will the tiny scew of the 2204 motor fit in the nut

K K Iyer

Theleabres. Shame on you. Guy has screws loose. You tell him  about blind nuts which are for (b)olts.

Simplest solution for loose mounting screws for elec motors is a drop of CA in the holes in the ply plate. Used this even today.

theleabres

Thanks for pointing out the obvious.  I use nails with my blind bolts with some bubble gum too.
Read post #2. 

b4ggu

If one can get Gorilla Glue or PU30 D4 adhesive, this is very good as the glue expands when it comes in contact with moisture. Mix a bit of sawdust in glue and just a drop in your foamy or balsa plane will expand 2 to 3 times its original size. I use cocktail sticks (these are made of hard woods compared to toothpicks that are from soft wood) these are driven into the foamy's firewall, pulled out and a drop of Gorilla glue is added on each hole, cocktail stick driven in again......MOTOR MOUNT WILL NEVER MOVE..
(the black tiles are 600 x 600mm // 2ft x 2ft ...to give you an idea of size wingspan is nearly 50 inches)
Deepak