Brief Description: Drill Flap Actuator Shaft for Safety Wire
Dreaded this job but went out and drilled the electric flap actuator shaft and the heim CM4 bearing for safety wire. I have a hard time with small drill bits, letting the sharp bit do its job. I often push too hard and snap the bit off in the hole. So this time I did not push.... too much.. #51 bit was used and I am using .041 safety wire on this assembly Do NOT use high or even medium speed on the drill. Use lubricant and slow speed and you will watch that bit do its magic. I was probably using 200 rpm or less on the dewalt hand held. You have very little drilling room with the jam nut covering most of the metal. Get real close to the flat face of the nut to mark your starting point. Of course remove the nut and bearing then drill straight in from the end until you have just a little hole deep enough to then change direction and angle out towards the side of the actuator shaft. Plan on coming out the side just past a groove located towards the end of the shaft. Go slow. Lube often. You will finally see the drill point pushing through the side of the shaft where you wanted it to. I used the dremel and a diamond coated honing bit to shape the final slope I wanted, starting from the side of the shaft. Not much shaping needed. I needed that to start the wire through without bending it up trying. Re-inserted the bearing to a predetermined depth, tightened the nut and wired it up. Had my reversable safety pliers and put a left hand twist on the wire, snipped and tucked it. Hope that was the right direction. I think so. Jeeesh. I am glad that is over. I don't know why I worried so much about it.
#51 bit. Diamond coated honing bit. Patience.
I'll have to check I have the correct twist on this thing.
If it tries to unscrew, the wire going under the right side of bearing would tighten up and stop it.
