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Strobe light, now Charging system

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Fox5flyer
Guest

Posted: Mon Nov 20, 2006 8:20 am Post subject: Strobe light, now Charging system

Thanks for the reply John.  When I had my M2  582 with volt meter and no amp gauge, turning on the Whelens (on top of  everything else) would cause the system to overload to the point that it was no  longer charging and slightly discharging.  This was only when I turned on  the position lights as they're pretty demanding.  I learned to just turn on  the position lights for taxi only and relied on the strobes for flight.   The discharging happened quite often, but it was something I could control by  reducing demand on the system.  At no time did it cause any problems.   You think it might be possible that your regulators and stator were  coincidences?  The supplied regulators with the 582 were pretty much  disposable junk and most of them would fail in short time.  I guess I just  don't understand the dynamics of what will burn up and why.  Can anybody  explain this?

 Regards,

 Deke

  

 [quote]   I burned up 2 regulators and 1 stator     before i understood electricity this was in my younger days lol. In my    experience even with a good battery but higher draw than  electrical    capacity for long then it could and will burn up something . The other side is    we now have great breakers to help with this if it pops then to much draw on    breaker now . 

    

   I gootta get to work 

   John Perry

   DO NOT ARCHIVE

    

   [quote]     ---

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smokey_bear_40220(at)yaho
Guest

Posted: Mon Nov 20, 2006 9:49 am Post subject: Strobe light, now Charging system

Deke,



One thing seldom mentioned is that heat is a big

factor in the life of electrical parts.  Increasing

the amount of cooling air getting to the alternator

and regulator can allow them to handle more amps. 

Mounting them near hot points or where radiated and

conducted heat can get to them may reduce their lives.

 Having the alternator embedded in the engine case can

really limit life as you get close to the rated

charging level.  So someone with good cooling will

have a completely different parts life than someone

with hot electrical parts.



The amps draw of course is a big heat generator in the

part itself.  Also, regulators with points can burn

the points thru high current draw reguardless of

cooling.  Points are effectively welding and breaking

the weld as they opperate.  The material eventually

burns off, faster with higher current.



So it is a combination of things that determine the

life of electrical parts.  Lower current = lower

electrical heating.  Protection from other heat

sources = lower temps.  Cooling air flow = lower

temps.  Lower current = less welding of points.



Just my take on the subject.



Kurt S.



--- Fox5flyer <fox5flyer(at)i-star.com> wrote:



 	  Quote: 	
		   ...The supplied regulators with the 582 were pretty

 much disposable junk and most of them would fail in

 short time.  I guess I just don't understand the

 dynamics of what will burn up and why.  Can anybody

 explain this?

 Regards,

 Deke

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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Mon Nov 20, 2006 1:17 pm Post subject: Strobe light, now Charging system

The lighting plant (coils) in  the 582 work a little differently than the voltage regulator in your car and  only slightly differently than the old carbon pucks in an old Bell 206, not that  many of us have had the fun of playing with those.  

  

 Basically it is a  transistorized regulator.  It requires a battery or consistent load ( a  dirt big resistor if your plane doesn't have a battery), to be installed to  operate properly. If your battery gets into an over charge situation and doesn't  offer a place for the regulator to put excess current then that little regulator  chip I mentioned a moment ago will over heat  and fry in short order.   One thing that you should be aware of is the Voltage regulator that comes with  these little engines is also a unit called a rectifier.  This means that  the lighting coils produce AC voltage similar to what you get out of your wall  socket.  The battery and all the other neat stuff in your plane requires  DC.  In the case of the R582 the regulator not only keeps a consistent  13.8V on your system while operating but it converts the AC to DC so you can use  it.  The rectifier circuits are usually built to handle a lot more power  than the generator can gen or an alternator can alter .  But in the case  of a battery with a bad ground the regulator will try to dissipate excess  current itself in the form of heat.  The bad news is it isn't designed to  do that.

  

 The generator coils in your  engine will try to produce as much power as they can at all times so it is  fairly easy to over load them.  The best advice is to keep all the grounds  clean as possible.   That includes a good grounding strap between  the engine and the frame of the plane (engine mounts insulate the ground) and  the ground side of the battery.

  

 Most electrical problems I've  seen in aircraft, cars, trucks and boats will usually be traced back to a rotten  ground somewhere.

  

  

 

Noel [quote]   

   --

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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

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