Gary0747 Posted May 4, 2019 Report Share Posted May 4, 2019 This apparently came out in December. I had not heard much about it but Slick has used copper electrodes in distributor gears for years and is now going to monel but the recall is not for all distributor gears with copper electrodes? Is this a real problem since it is not an AD? https://www.aviationpros.com/engines-components/aircraft-engines/piston-engines-parts/news/12438456/champion-aerospace-recalls-all-4300-and-4700-series-slick-magneto-distributor-gears-with-copper-electrodes Quote Link to comment Share on other sites More sharing options...
carusoam Posted May 16, 2019 Report Share Posted May 16, 2019 Let’s check in with the Doc @M20Doc Slick mag update question..... Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Guest Posted May 16, 2019 Report Share Posted May 16, 2019 I’m told that the new style gears are in short supply at the moment. Clarence Quote Link to comment Share on other sites More sharing options...
orionflt Posted May 16, 2019 Report Share Posted May 16, 2019 Slick briefed us on this at our last IA seminar in Nov, sounds like they are going the extra step to get them fixed. they were very up front on the whole issue. Brian Quote Link to comment Share on other sites More sharing options...
Gary0747 Posted May 16, 2019 Author Report Share Posted May 16, 2019 Kelly is apparently not changing anything. Still using copper. Quote Link to comment Share on other sites More sharing options...
Lrn2Fly Posted May 16, 2019 Report Share Posted May 16, 2019 We just removed the mags from my '66E to get this SB done. Sent them in on Monday to QAA in Ft Lauderdale. I will update this thread when I know something. However, before we removed them, we checked the timing and found that one was spot on, but the other one was about 4 degrees off, i.e. was firing at 29 degrees BTDC. This was a real concern as it could have aggressively introduced mayhem to the engine. Since installing these mags 600 & 400 hours ago, we have had to change the points and the internal cam due to their uneven wear, as per Champion's earlier problem. The new points and cam really did fix the starting problem I had several years ago, to the point of not even thinking twice about a hot start anymore. Cold starts were 2-4 blade events as well. (The mags are being overhauled, not just having the cap replaced.) Let us hope that Champion will finally resolve their mag problems once and for all. Until later, gang. Quote Link to comment Share on other sites More sharing options...
carusoam Posted May 16, 2019 Report Share Posted May 16, 2019 25° BTDC is strong, when under full load... CHTs are a bit warmer... Risk of detonation increases, but is still under control with good ROP mixture... 29° BTDC is even stronger, under full load, you might find out where detonation begins... Expect even hotter CHTs... Bad detonation challenges can melt pistons enough to make holes in them in a few minutes... What keeps pistons cool... boundary layers... and oil splashing on the bottom side, and excess fuel on the top side... top/bottom figuratively writing... In cruise... the additional timing is probably pretty good at converting fuel to airspeed, under the lighter load of LOP... making variable timing something to look forward to... PP thoughts only, not a mechanic... Best regards, -a- Quote Link to comment Share on other sites More sharing options...
RobertGary1 Posted May 21, 2019 Report Share Posted May 21, 2019 This is frustrating because 2 years ago I sent my mags back to Slick for basically this same SB. Now there is yet another SB that says the new mags also have an issue. -Robert Quote Link to comment Share on other sites More sharing options...
Lrn2Fly Posted May 23, 2019 Report Share Posted May 23, 2019 We received the mags back from QAA in Ft Lauderdale, and installed them in the E model yesterday. They went in perfectly, and on startup, the engine fired up on the 2nd blade. The internal timing was set correctly. We did not open up the mag to inspect the rotor cap, as this would have voided the warranty (we had both mags overhauled), so we can't say what kind of metal/parts were installed for the SB. By the way, we can highly recommend QAA for this service. 1 Quote Link to comment Share on other sites More sharing options...
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