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headset crackle

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wdaniell.longport(at)gmai
Guest

Posted: Sun Aug 16, 2020 1:44 pm Post subject: headset crackle

I would be grateful for any ideas on the following:



I have a rotax with a Z16.  It has 250 hours from new.

My dynon skyview has been completely RF silent up today when during the flight i had quite a significant crackle that rose and fell with RPM.  The crackle was lower at lower rpm.  Once back on the ground i discovered that the crackle went when I switch off one mag.  And when I switched off mag the other the engine coughed as if with intermittent spark.

I have recently fitted a new prop and took the top plugs out to facilitate rotation of the prop but otherwise i have not fiddled with the ignition system.

I am assume that i have some kind of issue with the HT system.

I have been advised that rotax ignition modules rarely suffer intermittent faults - is this correct?



I have also been advised to examine the Plug caps and "renew" the connection between HT lead and plug cap cutting off 1/8 of the HT lead. 

Does anyone have any other suggestions?

Thanks

Will

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Peter(at)sportingaero.com
Guest

Posted: Sun Aug 16, 2020 2:02 pm Post subject: headset crackle

Check your headset sockets are tight and have the insulation washers fitted.

 

Peter

 

 

 

I would be grateful for any ideas on the following:

 

I have a rotax with a Z16.  It has 250 hours from new.

 

My dynon skyview has been completely RF silent up today when during the flight i had quite a significant crackle that rose and fell with RPM.  The crackle was lower at lower rpm.  Once back on the ground i discovered that the crackle went when I switch off one mag.  And when I switched off mag the other the engine coughed as if with intermittent spark.

 

I have recently fitted a new prop and took the top plugs out to facilitate rotation of the prop but otherwise i have not fiddled with the ignition system.

 

I am assume that i have some kind of issue with the HT system.

 

I have been advised that rotax ignition modules rarely suffer intermittent faults - is this correct?

 

I have also been advised to examine the Plug caps and "renew" the connection between HT lead and plug cap cutting off 1/8 of the HT lead. 

 

Does anyone have any other suggestions?

 

Thanks

 

Will

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user9253

Joined: 28 Mar 2008
Posts: 1922
Location: Riley TWP Michigan

Posted: Sun Aug 16, 2020 4:01 pm Post subject: Re: headset crackle

Try new spark plugs?

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_________________
Joe Gores

wdaniell.longport(at)gmai
Guest

Posted: Sun Aug 16, 2020 5:49 pm Post subject: headset crackle

Yes Joe thats a good ideaThanks



William Daniell

+1 786 878 0246



On Sun, Aug 16, 2020, 20:07 user9253 <fransew(at)gmail.com (fransew(at)gmail.com)> wrote:



 	  Quote: 	
		  --> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com (fransew(at)gmail.com)>

 

 Try new spark plugs?

 

 --------

 Joe Gores

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=497787#497787

 

 

 

 

 

 

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wdaniell.longport(at)gmai
Guest

Posted: Mon Aug 17, 2020 8:45 am Post subject: headset crackle

Mmm not sure....before there was no crackle with the audio and the audio system is unchanged.



The plane is composite and the jacks are isolated.  But ill check that.  Its an easy task.

Thanks



William Daniell

+1 786 878 0246



On Sun, Aug 16, 2020, 18:06 Peter Pengilly <Peter(at)sportingaero.com (Peter(at)sportingaero.com)> wrote:



 	  Quote: 	
		  

Check your headset sockets are tight and have the insulation washers fitted.

 

Peter

 

 

 

I would be grateful for any ideas on the following:

 

I have a rotax with a Z16.  It has 250 hours from new.

 

My dynon skyview has been completely RF silent up today when during the flight i had quite a significant crackle that rose and fell with RPM.  The crackle was lower at lower rpm.  Once back on the ground i discovered that the crackle went when I switch off one mag.  And when I switched off mag the other the engine coughed as if with intermittent spark.

 

I have recently fitted a new prop and took the top plugs out to facilitate rotation of the prop but otherwise i have not fiddled with the ignition system.

 

I am assume that i have some kind of issue with the HT system.

 

I have been advised that rotax ignition modules rarely suffer intermittent faults - is this correct?

 

I have also been advised to examine the Plug caps and "renew" the connection between HT lead and plug cap cutting off 1/8 of the HT lead. 

 

Does anyone have any other suggestions?

 

Thanks

 

Will

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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