Motors Oiling bearings

[zenmetsu]

Out of curiosity, how do you reach the lower bearing on a Scorpion 2206-3900?? These have a flat bottom with cooling holes, but there is no sign of the bearing. I cannot find information online as to how to do this. Do you have to dismantle the motor??

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There is a round block that extends below the flat base that has two set screws. I am thinking that these need to be removed to access the bearings. Surprisingly I cannot find information even on Scorpion's site

 

[Tony]

You will remove the motor, then remove the pinion. YOu may have to remove a grub screw but the motor case will slip off the armature giving you access to the bearings

 

[zenmetsu]

Ugh... I was hoping to not have to do a complete teardown for maintenance purposes. Oh well. I'll have to do this every 30 flights then... any more frequently and I will probably lose my wits.

 

[Tony]

IT's not really that bad. The worst part about it is getting the gear mesh back where it's supposed to be.

 

[zenmetsu]

That's easy. Add loctite, partially tighten screws, ram pinion against main gear, lightly tap motor back a few times... wiggle main gear while holding motor still to see if there is a little play, if not, repeat tapping and wiggling until satisfied... tighten screws.

CAKE!

 

[murankar]

The best way is to remove the c clip, then lift out the center. There is a washer at the end of the shaft that is a royal pain to put back. There should be no need to remove the shaft for that task, unless working with c clips are not your thing.

 

[zenmetsu]

Great.. jesus clips...

I guess I can go that route. The hassle is getting to the motor on the 250. If I remove the front two screws on the battery tray, it will swing upwards and out of the way. Then I have to remove the 6 screws that hold the motor mount and then slide it out the front of the frame. Kinda a pain in the butt for general maintenance.