Prop Drilling - Which way??
 

Ok, 1:22 a.m. and I want to drill my CF prop for my DA50. Do the bolt holes go 12 and 6 / 9 and 3 with the prop sitting at 9 & 3? or is it the 10/4 - 7/2 o'clock position???

Mac

RE: Prop Drilling - Which way??
 

Mac,

Mine are at about the 2/8 and 11/5 position with the prop blades vertical. On my DA this results in the prop at about the 2/8 position when it hits compression. That's the best position for me to hand flip.

Greg

RE: Prop Drilling - Which way??
 

I also use the 2-8 and 5-11 position and I drill from the front.

RE: Prop Drilling - Which way??
 

DA told me to drill it from the back???:eek:

RE: Prop Drilling - Which way??
 

drill from the back...... that is where the pattern will be most accurate and that is what is against the hub

RE: Prop Drilling - Which way??
 

Drill from the back. If you are not exactly precise in your
drilliing, the holes will come closest to matching the bolt
holes in the hub.

RE: Prop Drilling - Which way??
 

What about the pattern guys? does it even matter?

Mac

RE: Prop Drilling - Which way??
 

I don't remember what it is on the clock....

but yes.....I bring the motor up to compression where the ignition sensor isright at the pickup... I then position the prop so it will be at about 2:00
then mark that for a rough spot... I then use the jig to drill.......

so when i am done the prop is up at 2:00 and easier for me to start