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Prop Drilling - Which way??

Old 02-24-2007, 01:25 AM
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The MacDaddy
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Default 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
Old 02-24-2007, 06:57 AM
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gsmarino2000
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Default 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
Old 02-24-2007, 08:32 AM
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AirWizard
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Default RE: Prop Drilling - Which way??

I also use the 2-8 and 5-11 position and I drill from the front.
Old 02-24-2007, 09:34 AM
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The MacDaddy
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Default RE: Prop Drilling - Which way??

DA told me to drill it from the back???
Old 02-24-2007, 09:46 AM
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exeter_acres
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Default 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
Old 02-24-2007, 09:48 AM
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Default 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.
Old 02-24-2007, 10:04 AM
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The MacDaddy
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Default RE: Prop Drilling - Which way??

What about the pattern guys? does it even matter?

Mac
Old 02-24-2007, 10:15 AM
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exeter_acres
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Default 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

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