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Old 04-27-2019, 08:41 AM
chrisbryanolsen chrisbryanolsen is offline
Join Date: Oct 2011
Location: Albuquerque
Posts: 96
Default SkyTec 149NL separating - Keep an eye on them

During my last oil change noticed some dark staining around where the motor meets the gearbox on the starter. Grabbed ahold of motor and it was loose!
There are some bent tabs to hold the two screws in place no locktite I could see. Pulled in a part and cleaned it up replaced the tabbed washers with lock washers (unlikely to help much) and blue locktite.

Due to the bad ground it was getting it was much more effective when starting it up. Spun up much faster, since it happened slowly I had not noticed it spinning slower.

Will keep a closer eye on now see how it does.

Chris Olsen
Chile Flight
Dues Paid Nov. 2021
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Old 04-27-2019, 09:16 AM
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Mark33 Mark33 is offline
Join Date: May 2010
Location: Baton Rouge, La.
Posts: 757

I had the exact same thing happen to mine. Are you saying that you think it?s a bad ground causing the issue?

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Old 04-27-2019, 10:21 AM
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Toobuilder Toobuilder is offline
Join Date: Jul 2009
Location: Mojave
Posts: 4,845

This is a known issue and there are plenty of threads on this. Much of the hardware is 10-32 and can be replaced with drilled head fasteners for safety wire. I've safetied my starter and is seems to be the fix for me.
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
Harmon Rocket II -SDS EFI
1940 Taylorcraft BL-65
1984 L39C
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Old 04-28-2019, 08:38 PM
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bhester bhester is offline
Join Date: Jan 2005
Location: Hopkinsville, KY
Posts: 1,037
Thumbs up Me too

Mine use to do that until I used locktite and it has been good ever since.
Bobby Hester - Builder/Pilot/A&P
Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
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Old 04-28-2019, 08:56 PM
Scott Hersha Scott Hersha is online now
Join Date: Jan 2005
Location: Cincinnati, OH
Posts: 2,028

We have had two of these same problems with the Skytec (Hartzell) 149NL and they were sent to Hartzell for a fix. They know about this problem - it's happened before, and they are supposedly coming up with a fix.
RV6/2001 built/sold 2005
RV8 Fastback/2008 built/sold 2015
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RV8/2018 built/Sold(sadly)
RV4/bought 2019 Flying
RV6/Used kit purchased 2021 building
Cincinnati, OH/KHAO
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