robin1(at)mrmoisture.com
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 Posted: Thu Jun 28, 2007 7:47 am Post subject: OSH Lat |
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OSH
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Condrey, Bob (US SSA)
Sent: Thursday, June 28, 2007 7:32 AM
To: rv10-list(at)matronics.com
Subject: RE: Starter damage after kick back on hot start
Other factor is that the field wound starters have less inrush current draw than the PM types. If you’ve got LSE ignition(s) this is a potential issue although LSE has a version of their ignitions that mitigate it somewhat. Their preference if you have a PM starter is to have another small battery that does nothing except keep the voltage to the ignitions from sagging during the inrush.
Bob #40105
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of RV Builder (Michael Sausen)
Sent: Thursday, June 28, 2007 9:10 AM
To: rv10-list(at)matronics.com
Subject: RE: Starter damage after kick back on hot start
Another option, probably the one you are referring to below, for those who like the Sky-Tec starters is to use the new High Torque Inline NL model. It’s 1.6lbs heavier than the original LS models but uses a simple shear pin to protect from kickback. Also, if I remember correctly, the wound field starters are less susceptible than the PM starters to causing the types of battery drains that would cause a kickback. Being a dual LSE3 configuration, this was a definite concern of mine.
http://www.skytecair.com/Lycoming.htm
Michael Sausen
-10 #352 Limbo
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Marcus Cooper
Sent: Tuesday, June 26, 2007 5:16 PM
To: rv10-list(at)matronics.com
Subject: RE: Starter damage after kick back on hot start
Randy,
I had exactly the same thing happen after one of my first few starts, hadn’t even flown the airplane yet. I did some research on the list and found this to not be uncommon. While avoidable I guess, I opted for the heavier duty starter per others recommendations and it’s been great ever since. If I remember correctly it also has a different failure mode that enables you to replace one part vs. the whole starter. I recommend you do a search on the list for similar issues.
Marcus
40286
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Randy DeBauw
Sent: Tuesday, June 26, 2007 1:55 PM
To: rv10-list(at)matronics.com
Subject: Starter damage after kick back on hot start
We about a week ago I gave a friend a ride in Central Washington. It was in the low 90’s deg oat. I dropped him off and I was on the ground for 5 – 8 min. When I tried my normal hot restart I have been using for 2 years experienced a kick back. This was not normal at all and to keep it from doing it again I went full rich on mix and ran fuel pump for 5 seconds or so to add some cold fuel to the cylinders. I knew that it would give me a flooded condition but that was my intent. This added cool fuel the intake and I was able to make a flooded hot start with no problem. Here is the issue. Immediately after the kick back the starter started to make a grinding noise much like the old Chevy starters that needed shimming. I pulled apart the starter last night and looked it over. It looked fine. I called SkyTec this morning and the confirmed that a kick back will almost always cause a bent shaft in the starter. They make the starter so that it will give way on kick backs and save the ring gear. They said that to replace every part in the starter cost 150.00 buck and is a lot cheaper than messing with a new flywheel ring gear. I agree!. So be aware if a kick back happens to you and a new noise develops. Randy 40006 012345678901234
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