Guide to re-gluing motor magnets

---

This is not meant to be comprehensive guide on how to do everything, It is provided to give you a specific guide to what is involved in gluing magnets for this specific gearmotor. What works for this specific motor may not for others, so do it at your own risk!

---

So a common problem to plenty of roboteers and a crippling one at that - magnets falling out of the motor. Unfortunately with the advent of extremely cheap ebay supplied chinese motors, both brushless and brushed this has become more of an issue than in the past with the lower quality motors generally not having the magnets glued into place, causing them to fall out and become pulverised by the spinning rotor. Not good for performance!

This guide is a run down on gluing the magnets into the 1000rpm gearmotor commonly used in beetleweight robots, because they are probably the most failure prone motor when it comes to the magnets coming off despite being well suited to beetleweight drives when fixed.

*link goes here*

What you’ll need (at a minimum):

- 1000rpm ebay gearmotor. NOTE - there are two types of motor that are different, the procedure is the same but just be aware of it.

- Thick paperclips

- Fine Phillips Head Screwdrivers

- An old razor blade

- JB weld adhesive (do not use anything else)

- Paper towels

- Wax and grease remover

- plastic rod of suitable size (see process for details)

- small gear puller

---

Procedure

1) Remove gearbox with the two screws on the faceplate , being careful not to loose the small spacers on the open side.

2) Remove the motor faceplate with the two screws.

3) With your gear puller, remove the motor pinion gear. Be careful to use the correct pin on the puller (the smallest one)



4) Flipping the motor over use your old razor or a sacrificial small flatblade screwdriver to open up the tabs holding the plastic end bell on. Don't over do it! Just bend them enough so you can wiggle the end bell out

5)