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Rotax 582 Start Current

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Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Thu Feb 08, 2007 11:04 am Post subject: Rotax 582 Start Current

The short question is: What is the approximate start current for a Rotax 582?



Why do I ask? Because today I fried the shunt on my 30A ammeter. This 

shunt operates in line between the battery and starter.



I've noticed lately that starting has been slower and I attributed it 

to lower battery capacity. Today I checked the voltage at 13.1V, then 

tried starting. I got three very slow turn-overs followed by a click, 

then nothing. It turns out the click was the shunt separating. I've 

got probably 100 starts on this system over the last year. I did a 

resistance check of the starter across the "big" wires and got only 

0.3 ohms. Is it possible the starter is shorted? How can I tell if 

the starter is bad? Do I dare simply attach the battery to the 

starter directly to see if it works? I could also simply by-pass the 

shunt to see if it works, then I could use the start switch. I'm 

concerned, however, that if the starter is shorted I could blow the 

battery. Is that a possibility?



Thanks,

Guy Buchanan

K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.

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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

NYTerminat(at)aol.com
Guest

Posted: Thu Feb 08, 2007 1:04 pm Post subject: Rotax 582 Start Current

Guy,

  

 The wire to the starter motor should not go through the shunt, the load for  everything else goes through the shunt.( ignition,lights,radios,flap motors,trim  motors, etc.)

 I am surprised that you were able to get any starts at all without blowing  the shunt. If you want more info on wiring, go to the aeroelectric.com website.  

  

 Bob Spudis

 N701ZX/CH-701/912uls

  

  

  

 In a message dated 2/8/2007 2:06:19 P.M. Eastern Standard Time,  bnn(at)nethere.com writes:

  	  Quote: 	
		  -->    RotaxEngines-List message posted by: Guy Buchanan    <bnn(at)nethere.com>



The short question is: What is the approximate    start current for a Rotax 582?



Why do I ask? Because today I fried the    shunt on my 30A ammeter. This 

shunt operates in line between the battery    and starter.



I've noticed lately that starting has been slower and I    attributed it 

to lower battery capacity. Today I checked the voltage at    13.1V, then 

tried starting. I got three very slow turn-overs followed by a    click, 

then nothing. It turns out the click was the shunt separating. I've    

got probably 100 starts on this system over the last year. I did a    

resistance check of the starter across the "big" wires and got only    

0.3 ohms. Is it possible the starter is shorted? How can I tell if 

the    starter is bad? Do I dare simply attach the battery to the 

starter    directly to see if it works? I could also simply by-pass the 

shunt to see    if it works, then I could use the start switch. I'm 

concerned, however,    that if the starter is shorted I could blow the 

battery. Is that a    possibility?



Thanks,

Guy Buchanan

K-IV 1200 / 582-C /    Warp / 100% done, thanks mostly to Bob Ducar.  = Use  lities  Day       -->                - NEW MATRONICS WEB FORUMS -

bsp;    -->  ======================



	


 

  

  [quote][b]

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