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11-06-2018, 04:06 AM
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Join Date: Dec 2015
Location: Lewes, DE
Posts: 364
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Prop dome stripped: How bad is this?
I had Sensenich do an IRAN on my Hartzell cs prop, and I’m not sure if it’s something they missed or maybe not something that gets checked, but One of the bolt holes that holds the front spinner bulkhead to the prop is completely stripped. I’m going to call Sensenich and see what they say, but can just hear them saying that it’s got to come back in. Shipping alone would be a killer, much less the new parts. Any standard procedures for fixing such a thing in the field? Helicoil?
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Rebuilt RV-6A N94CR
RV-8 N803DR completed, flying.
Last edited by j-red : 11-06-2018 at 07:36 AM.
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11-06-2018, 08:05 AM
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Join Date: Jan 2005
Location: Georgetown, TX
Posts: 396
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Helicoil insert would be good local fix but can only be done on an experimental. Available at good auto parts stores.
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Deene Ogden.
N399AD RV-12...flying
N299AD RV8 QB, IO-390X, BA prop...SOLD
N199AD One Design...SOLD
N99AD BD4, flew for 22 years...SOLD
EAA Tech Counselor/Flight Advisor
CFII, MEI, CFIG
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11-06-2018, 08:47 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,118
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Would still require a dynamic rebalance, several people are doing that for the RV's.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now. 
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11-06-2018, 08:51 AM
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Join Date: Sep 2008
Location: Fayetteville, Georgia
Posts: 215
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You would be adding a couple grams less than an inch from centerline. Do you really think that?ll throw the balance off?
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11-06-2018, 09:09 AM
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Join Date: Dec 2015
Location: Lewes, DE
Posts: 364
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It's a new installation and so i'll need a dynamic balance done anyway whether or not this makes a difference.
Thanks for the input everyone. I'll go ahead and see if I can't pick up a helicoil kit. Will probably need a good bottoming tap too for these shallow holes, but that's pretty inexpensive in the grand scheme of things.
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Rebuilt RV-6A N94CR
RV-8 N803DR completed, flying.
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11-06-2018, 09:37 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Quote:
Originally Posted by j-red
I'll go ahead and see if I can't pick up a helicoil kit. Will probably need a good bottoming tap too for these shallow holes, but that's pretty inexpensive in the grand scheme of things.
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From my experience, the Helicoil kit usually comes with a tap, they are not standard sizes.
After getting the hole tapped as far as you can with the lead tapered tap, you can ground off the taper and make it into a bottom tab.
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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