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Mag Coils- again

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yakman285(at)gmail.com
Guest

Posted: Wed May 15, 2019 2:21 am Post subject: Mag Coils- again

Determine what may have caused the mag coils to overheat. A common cause for engines equipped with automotive ignition and spark plugs is that the spark plug gap is set too wide, raising resistance which increases with altitude. Use a .018" to .020" gap setting.

Craig Payne



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Off2wildblue

Joined: 18 Apr 2018
Posts: 45

Posted: Sun Jun 02, 2019 1:04 pm Post subject: Re: Mag Coils- again

I just started flying the plane and I have an issue that popped up with my mags. Mag 2 is getting a 200 drop and the 1 is getting between 80-100. The plane ran well on my checkout but on my first day to solo my run up had issues so I taxied back. 



My idle fluctuations were from 300-360 with the manifold pressure erratic as well. The only thing I did was that I installed the longer spark plugs that were BRP’s. I wouldn’t think that would matter but I can’t really tell you how it ran before because I swapped them prior to these flights. I am a new owner as you might have guessed. 



I was wondering what you think I should check and look for. I just want to take a look at it and see if there’s something that is obviously wrong. Could this issue be related to mine. My new plugs were set at .020” could have been a hair more beuse I only had the disc that went down to .020”. 



What are your thoughts?



SAM

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dsavarese0812(at)bellsout
Guest

Posted: Sun Jun 02, 2019 4:06 pm Post subject: Mag Coils- again

Sam,

I addressed these issues in a reply to the personal email you sent me.

Dennis



                  

                                                                    On Sunday, June 2, 2019, 5:06:36 PM EDT, Off2wildblue <Off2wildblue(at)me.com> wrote:                 

                 



                 



                 --> Yak-List message posted by: "Off2wildblue" <Off2wildblue(at)me.com (Off2wildblue(at)me.com)>



I just started flying the plane and I have an issue that popped up with my mags. Mag 2 is getting a 200 drop and the 1 is getting between 80-100. The plane ran well on my checkout but on my first day to solo my run up had issues so I taxied back. 



My idle fluctuations were from 300-360 with the manifold pressure erratic as well. The only thing I did was that I installed the longer spark plugs that were BRPâ€™s. I wouldnâ€™t think that would matter but I canâ€™t really tell you how it ran before because I swapped them prior to these flights. I am a new owner as you might have guessed. 



I was wondering what you think I should check and look for. I just want to take a look at it and see if thereâ€™s something that is obviously wrong. Could this issue be related to mine. My new plugs were set at .020â€� could have been a hair more beuse I only had the disc that went down to .020â€�. 



What are your thoughts?



SAM



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richard.goode(at)russiana
Guest

Posted: Mon Jun 03, 2019 2:43 am Post subject: Mag Coils- again

I would be as sure as I can be that this is an absolutely "normal" magneto coil problem, and the only solution is to change the coils.

RICHARD GOODE AEROBATICS

Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK

Tel:  +44 (0)1544 340120   Fax:  +44 (0)1544 340129

e-mail: richard.goode(at)russianaeros.com

www.russianaeros.com

WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES

In partnership with Aerometal Kft, Hungary.

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