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02-25-2013, 01:18 PM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,564
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The RV-6 I fly now would't start worth a **** when cold, but when it was warm it started no problem. Turned out to be reversed p-leads to the mag switch which disabled the wrong mag (the mag with an impulse coupling.)
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Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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02-25-2013, 01:22 PM
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Join Date: Oct 2011
Location: Atlanta
Posts: 878
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Errr......
Perhaps I missed something but....
OP, do you know if you actually HAVE mags?
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RV-8 IO-360 (Bought)
RV-6 O-360 C/S (Sold)
Walkman aka Flame Out
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02-25-2013, 01:39 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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Thanks guys. I wasn't working on it alone, I just wanted to have some good ideas to go from when I got started with the A&P in the morning. He told me the left mag is bad,(the one with impulse) so I'm sending it in to get overhauled. Lucky the A&P that sold me the plane offered to fix it for free minus parts. I'm sending it to him. Thanks for everyone's help.
It is a slick model 4272
Serial 90050012
Kinda makes me want to get electronic ignition.
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Erik Mortenson
Rans S-20 low and slow
14 build working on wings
Last edited by erikpmort : 02-25-2013 at 01:43 PM.
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02-25-2013, 01:47 PM
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Join Date: Jan 2005
Location: Mtns of N.E. Georgia
Posts: 1,322
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Quote:
Originally Posted by erikpmort
Thanks guys. I wasn't working on it alone, I just wanted to have some good ideas to go from when I got started with the A&P in the morning. He told me the left mag is bad,(the one with impulse) so I'm sending it in to get overhauled.
Kinda makes me want to get electronic ignition.
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Check out Robert Paisley at EFII. Great electronic ignition and great to work with!
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LAUS DEO
Mannan J.Thomason, MSGT. USAF (RET)
VAF788
"Bucket List" checkoff in progress!
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02-25-2013, 01:48 PM
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Join Date: Jun 2006
Location: Vero Beach, FL
Posts: 881
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Quote:
Originally Posted by erikpmort
Thanks guys. I wasn't working on it alone, I just wanted to have some good ideas to go from when I got started with the A&P in the morning. He told me the left mag is bad, so I'm sending it in to get overhauled. Lucky the A&P that sold me the plane offered to fix it for free minus parts. I'm sending it to him. Thanks for everyone's help.
It is a slick model 4272
Serial 90050012
Kinda makes me want to get electronic ignition.
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Or you could just replace the other (non-impulse) mag with electronic ignition, especially since you'll be getting a new/overhauled impulse mag back. That way you get most of the benefits of E.I. with the least amount of capital outlay! And you'll have two sources of starting ignition.
Glad to hear your almost fixed, safe flight home.
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02-25-2013, 07:42 PM
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Join Date: Jan 2005
Location: Hopkinsville, KY
Posts: 957
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Quote:
Originally Posted by erikpmort
He told me the left mag is bad,(the one with impulse)
Kinda makes me want to get electronic ignition.
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I've got one of each and I've had both fail (at different times), I like have one of each.
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Bobby Hester - Builder/Pilot/A&P
Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
Web site: http://www.newtech.com/bobbyhester/RVSite.htm
Dec. 2019 VAF donator - alot better than any magazine subscription
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02-27-2013, 12:34 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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results
so the Fbo diagnosed it as a bad mag. they told me its hard to find people to work on them and that i may not be able to find anyone to overhaul it. Well come to find out these guys don't know their stuff because the other 2 A&Ps i know were willing to look at it, and guess what? it ended up only needing the contact points cleaned! my local A&P said its unusual for something like that to be the problem, but he also checked the condenser and everything else looked fine.
Anyway, frusterating  that the FBO there wasn't even willing to open up the mag. the guy i sent it to had it working in 15 minutes. I could have flown home the same day. Glad it wasn't worse, but gee sometimes its hard to find good help....
I like the idea of one mag and one EI. i may do that at somepoint. thanks for the advice. Now i gotta go fetch my plane 500 miles away
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Erik Mortenson
Rans S-20 low and slow
14 build working on wings
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02-27-2013, 04:38 PM
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Join Date: Oct 2005
Location: Vancouver, WA USA
Posts: 908
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Quote:
Originally Posted by erikpmort
so the Fbo diagnosed it as a bad mag. they told me its hard to find people to work on them and that i may not be able to find anyone to overhaul it. Well come to find out these guys don't know their stuff because the other 2 A&Ps i know were willing to look at it, and guess what? it ended up only needing the contact points cleaned! my local A&P said its unusual for something like that to be the problem, but he also checked the condenser and everything else looked fine.
Anyway, frusterating  that the FBO there wasn't even willing to open up the mag. the guy i sent it to had it working in 15 minutes. I could have flown home the same day. Glad it wasn't worse, but gee sometimes its hard to find good help....
I like the idea of one mag and one EI. i may do that at somepoint. thanks for the advice. Now i gotta go fetch my plane 500 miles away
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I like that idea too, but currently I have two impulse mags, both are hot at start, it you had this you would have started the engine and the dirty points would have cleared by the time you got to the run-up area and you would be home, also very handy in the back country where you need it to start and work every time, at least on one mag.
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02-27-2013, 08:04 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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Good point. Can I add an impulse coupler or whatever you call it to my existing R mag ?
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Erik Mortenson
Rans S-20 low and slow
14 build working on wings
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02-27-2013, 08:49 PM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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I love dual impulse coupled mags. Starts much easier, especially on FI hot starts.
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Jesse Saint
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