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Is 10,000 uF enough?

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ianwilson2

Joined: 06 Jan 2008
Posts: 33
Location: France

Posted: Sun Feb 03, 2008 3:46 am Post subject: Is 10,000 uF enough?

I'm (still!) working on a list of parts for my Jabiru X-Air, based on Z-20.  B&C have a kit of parts (504-1) which includes the alternator disconnect relay, OVM-14 and a 10,000uF capacitor.  Z-20 and Note 20, both call for a 20,000 to 50,000uF capacitor.  Do you think that I would I be OK with the 10,000 capacitor in the PMOV kit, or should I order the parts independently and go with a 20,000 - 50,000 uF capacitor?



Many thanks.



Ian Wilson

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nuckolls.bob(at)cox.net
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Posted: Sun Feb 03, 2008 5:51 am Post subject: Is 10,000 uF enough?

At 03:46 AM 2/3/2008 -0800, you wrote:



 	  Quote: 	
		  



I'm (still!) working on a list of parts for my Jabiru X-Air, based on 

Z-20.  B&C have a kit of parts (504-1) which includes the alternator 

disconnect relay, OVM-14 and a 10,000uF capacitor.  Z-20 and Note 20, both 

call for a 20,000 to 50,000uF capacitor.  Do you think that I would I be 

OK with the 10,000 capacitor in the PMOV kit, or should I order the parts 

independently and go with a 20,000 - 50,000 uF capacitor?


	


  The "rule of thumb" for filtering is 1,000 uF per

  1A of alternator output. This is not critical.

  The 10,000 uF is fine but if you want to put a

  bigger one on, it's okay too.



  Keep in mind that the Z-figures are primarily

  intended to illustrate architecture. They're

  not intended to suggest a bill of materials.

  If anything you find in a z-figure argues with

  the manufacturer's suggested parts, the

  manufacturer's recommendations should prevail.



  You may find perfectly valid reasons for mixing

  and matching various accessories. For example,

  circuit breakers and fuses are generally inter-

  changeable, e-mags and p-mags can be used on

  virtually any of the z-figures where those

  products will fit the engine, etc.



  Bob . . .

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