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resending: Help-582 ignition fault

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rainsworth(at)xtra.co.nz
Guest

Posted: Sun Dec 16, 2007 10:00 pm Post subject: resending: Help-582 ignition fault

Hello List, can anyone help with this problem?

 I have a Model 4 Kitfox with a blue head 582 with 170 hours on  the engine.The plane had a gray head 582 which I replaced on 2005.

 The problem is when I started the plane last week the  engine started ok but when a mag check was done one mag was ok but the other  gave a drop of 800 to 1000 rpm on the rev counter but the engine itself did not  slow down

 I have done basic checks on the grounding points for the  engine and rev counter but I am not an electronics person.I have looked at the  Rotax ignition schmatic but its not much help.

 I dont understand how the rev counter can read ok on one side  but not the other.

  

 Russell Ainsworth     Mod 4  1050    ZK-KIV        NEW  ZEALAND

  

 do not archive

   [quote][b]

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eskflyer

Joined: 24 May 2007
Posts: 44
Location: AK

Posted: Mon Dec 17, 2007 5:32 am Post subject: Re: resending: Help-582 ignition fault

Mine did the same thing . the coil for the rev counter died . I use a tinytach it is accurate and gives me a perfect reading everytime and only cost about 45 bucks .

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_________________
FLY FUN FLY LOW FLY SLOW
John Perry
Kitfox 2 N718PD
582 cbox 2:62-1 IVO IFA
1220 Full Lotus

msm_9949(at)yahoo.com
Guest

Posted: Mon Dec 17, 2007 10:12 am Post subject: resending: Help-582 ignition fault

Russell,

   

  Because you detect no change in engine speed when you shut down one CDI, and because you get an accurate rpm reading on the other CDI, I'm going to guess that you have a digital "tiny tach" already installed. If not, ignore the rest of this post.

   

  If you'll have a look you'll find that the "sensor" for this device is no more than a wire wrapped 3-4 turns around one of your plug wires. It measures rpms by detecting the high voltage electronic pulse in this lead. So, when you shut down the CDI that fires though that lead, the digital readout will drop dramatically. At least that's been my experience.

   

  I have both digital tiny tach and a very inaccurate analog installed. I use the digital for accurate measurement under normal operation and the analog only to give relative drop during run-up. One day I'll treat myself to an accurate analog instrument  that will do both.

   

  



R & L Ainsworth <rainsworth(at)xtra.co.nz> wrote:

   	  Quote: 	
		          Hello List, can anyone help with this problem?

  I have a Model 4 Kitfox with a blue head 582 with 170 hours on the engine.The plane had a gray head 582 which I replaced on 2005.

  The problem is when I started the plane last week the engine started ok but when a mag check was done one mag was ok but the other gave a drop of 800 to 1000 rpm on the rev counter but the engine itself did not slow down

  I have done basic checks on the grounding points for the engine and rev counter but I am not an electronics person.I have looked at the Rotax ignition  [/b] 	
[/quote]

Marco Menezes

Model 2 582 N99KX

        Be a better friend, newshound, and  [quote][b]

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rainsworth(at)xtra.co.nz
Guest

Posted: Wed Dec 19, 2007 1:22 am Post subject: resending: Help-582 ignition fault

Thanks to those who replied to my post re ignition. I do not  have a tiny tach but I will look into getting one.

  

 Russell Ainsworth     Mod 4  1050    ZK-KIV        NEW  ZEALAND

  

 Do not archive. 

  

  

   [quote][b]

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