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Old 07-23-2021, 01:55 AM
Erimo's Avatar
Erimo Erimo is offline
Join Date: Jul 2015
Location: Marcoussis, France
Posts: 157

Originally Posted by lr172 View Post
Presuming that you flew it 3 days ago and left the plane without charging it on the ground, then came back and measured batt voltage at 13V.
Yes Larry, it was.
RV 14A - #140252 - Flying
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Old 07-23-2021, 05:10 AM
Richard Connell Richard Connell is offline
Join Date: Aug 2006
Location: Sydney Australia
Posts: 430
Default Two similar issues Iíve experienced.

As others have mentioned check all your connections.
I had nut on the fat wire on the downstream side of the starter contactor come loose. It arced and welded itself. So it still worked but super patchy.

The other one which I have seen a few people do (myself included) is inadvertently wire the voltage sense on an external alternator regulator to the battery bus.
That regulator will draw a tiny current (about 20mA) with everything shut off.
Obv not a problem if you fly regularly but if you leave it a week or two..
Easy to test. See if thereís any parasitic drain on the battery with the master off.

RV7 VH-XRC Sold :-(
Sydney, AUS
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Old 08-09-2021, 10:32 AM
Steve Graham Steve Graham is offline
Join Date: Nov 2020
Location: Denver, CO
Posts: 4
Default Our starter troubles

We had a Skytec LS starter that was becoming intermittent. Especially after the first flight so we assumed it was some sort of heat-related issue. We could hear a relay clunk but no sign of rotation from the prop. Difficult to troubleshoot at first but was becoming worse with time.

The first thing we did, in addition to checking connections and voltages, was replace the firewall mounted start relay. No joy.

After taking off the snorkel which was preventing us from seeing the starter and solenoid well discovered the rivet that holds the little plate for the small ground signal to engage the starter was loose.

Update on part number for this solenoid which was earlier referenced as a borg warner BWD S5613. NAPA now shows this as a ECH ST421 which is cross referenced to early 2000's Crown Victoria's as well as the Ford Pickups.
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Old 08-10-2021, 05:22 PM
Erimo's Avatar
Erimo Erimo is offline
Join Date: Jul 2015
Location: Marcoussis, France
Posts: 157
Default Thanks

Thank you for all your advises.

I just found the starter relay connector nut to starter wire not completely tight.
So the split washer was not enough crushed.

I don't know if the issue is definitively fixed, but any start failure since this tightening.

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