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Alternator with built-in regulator

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wroe1(at)dbtech.net
Guest

Posted: Wed May 27, 2009 12:06 pm Post subject: Alternator with built-in regulator

I am building an RV-7 and have purchased a stock alternator from Vans

(in firewall forward kit).  I understand this unit to have a built-in

regulator.  I hope to use the B&C LR3C-14.  Being new to aircraft

electronics...will this create an issue or is there something that I'm

missing?



Wade Roe

 

SOUTHERN CARBIDE TECHNOLOGIES, INC.

7739 Unity Road M&D Industrial Park

Tuscaloosa, AL  35401

 

205-248-6700

205-248-6372 fax

frank.hinde(at)hp.com
Guest

Posted: Wed May 27, 2009 12:43 pm Post subject: Alternator with built-in regulator

If the regulator is built in it means exactly that..No external regulator will be required or indeed desired... Did you get the Plane Power 60A alternator or the rebuilt Honda unit I think it is.



The Plane Power is the finest internally regulated alternator there is and Van's has the best prices on them.



If you are building an electrically dependant airplane or an IFR bird then this is the unit you should have.



Frank



--

wroe1(at)dbtech.net
Guest

Posted: Wed May 27, 2009 1:23 pm Post subject: Alternator with built-in regulator

The alternator from Vans is a reconditioned Japanese automobile unit

(Honda?) that came with the firewall forward kit.  I figured the B&C

linear regulator to be a superior/cleaner product than that on the

alternator.



The plane will be IFR and all electric.  



Wade Roe

 



--

nuckolls.bob(at)aeroelect
Guest

Posted: Wed May 27, 2009 1:30 pm Post subject: Alternator with built-in regulator

At 02:59 PM 5/27/2009, you wrote:

 	  Quote: 	
		  



I am building an RV-7 and have purchased a stock alternator from Vans

(in firewall forward kit).  I understand this unit to have a built-in

regulator.  I hope to use the B&C LR3C-14.  Being new to aircraft

electronics...will this create an issue or is there something that I'm

missing?


	


    Do you have a copy of the 'Connection? It speaks to

    the various configurations for internally/externally

    regulated alternators. The updated chapter on alternators

    is posted at:



http://aeroelectric.com/R12A/03_Alternator_12A1.pdf



    Most single engine airplanes fly with externally

    regulated alternators for reasons offered in the

    chapter cited above. But either configuration can

    be adapted to aircraft.



    If you have a Plane Power unit from Van's, know

    that it has been successfully integrated into

    aircraft while meeting design goals for ON/OFF,

    any time, any conditions control. Further, it's

    fitted with over-voltage management.



    You won't need an LR-3 for this alternator.

        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

frank.hinde(at)hp.com
Guest

Posted: Wed May 27, 2009 1:52 pm Post subject: Alternator with built-in regulator

In that case send that alternator back to Vans and exchange it for the plane power unit...Trying to use the B&C regulator (which it was not designed for)  is a bit like putting lipstick on a pig..Its still a pig!



I futzed with a rebuilt alternator for a while and had a couple of scary moments in IMC..then I changed to the Plane power and its been faultless ever since. They come with a wonderful reputation. No electrical noise, just fit (with the supplied brackets) and forget it.



On An all electric IFR airplane the alternator is not the place to be making shortcuts!!!..The extra couple of hundred bucks is WELL spent.



Frank



RV7a..all electric IFR including 2* EI's and the fuel pumps!



--

nuckolls.bob(at)aeroelect
Guest

Posted: Wed May 27, 2009 7:40 pm Post subject: Alternator with built-in regulator

 	  Quote: 	
		  



The plane will be IFR and all electric.



Wade Roe




	


   Wade, would it be a fair assumption then that

   a second alternator will go onto the vacuum

   pump pad?



        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

wroe1(at)dbtech.net
Guest

Posted: Thu May 28, 2009 6:10 am Post subject: Alternator with built-in regulator

Roger that.  I plan to use the B&C 8 amp alternator or the 20 amp as  

backup.



Wade Roe

IPhone message

On May 27, 2009, at 10:38 PM, "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com 

 > wrote:



 	  Quote: 	
		   

 >

>

>

> The plane will be IFR and all electric.

>

> Wade Roe

>



  Wade, would it be a fair assumption then that

  a second alternator will go onto the vacuum

  pump pad?



       Bob . . .



       ----------------------------------------)

       ( . . .  a long habit of not thinking   )

       ( a thing wrong, gives it a superficial )

       ( appearance of being right . . .       )

       (                                       )

       (                  -Thomas Paine 1776-  )

       ----------------------------------------

longg(at)pjm.com
Guest

Posted: Thu May 28, 2009 6:44 am Post subject: Alternator with built-in regulator

One caveat on P & P alts. The one I had came with what I'll call a cheap

Molex connector for the field wire etc. I replaced it with sold wiring

after it vibrated and sheared itself off for the second time. I now use

and internal job and have not had any issues. It's all about the core

quality. Alternators are one of the biggest scams in automotive history.

They cost about $10.00 to rebuild and the vendors charge you an arm and

a leg.



As Frank mentioned, start with a good core and stick with it. I'm using

one off a Porsche and it works like a champ. 



Glenn

--

frank.hinde(at)hp.com
Guest

Posted: Thu May 28, 2009 7:20 am Post subject: Alternator with built-in regulator

Me too..I found that the SD8 was adequate and remember I run electric fuel pumps..One of them MUST be running or I become a glider.



I have a GNS 430W, transponder etc etc and found that with sensible load management the SD8 would maintian the battery volts at 12..Not enough to charge the battery but it would keep up with the load.



Frank 



--

nuckolls.bob(at)aeroelect
Guest

Posted: Thu May 28, 2009 12:18 pm Post subject: Alternator with built-in regulator

At 08:51 AM 5/28/2009, you wrote:

 	  Quote: 	
		  



Roger that.  I plan to use the B&C 8 amp alternator or the 20 amp as

backup.


	


   Most builders find the SD-8 to be adquate to the

   task. Consider Figure Z-13/8.

        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

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