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Z13/8 Main Alternator.

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MikeDunlop

Joined: 02 Jan 2012
Posts: 15

Posted: Wed Apr 09, 2014 6:44 am Post subject: Z13/8 Main Alternator.

I'm finishing off my electrical system in a Long-EZ that includes the SD-8, exactly as per the Z13/8 and have to make a final choice of the main alternator. 



For cost and availability locally I've decided to go with either a Lucas 60amp or 70amp. The advice I'm seeking is regarding the regulator, these units have an internal regulator, so do I keep the internal regulator? (remember the Z13/8 has the OV protection between the regulator and the bus) or do I do a conversion to use a B&C external regulator (I have a spare one I could use).



I've read many, many threads on OV and runaway alternators etc. and am not too sure if using the internal regulator in the Z13/8 architecture will give me complete protection.



Regards



Mike Dunlop (UK)

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Bill Allen

Joined: 24 Aug 2009
Posts: 42
Location: UK

Posted: Wed Apr 09, 2014 9:30 am Post subject: Z13/8 Main Alternator.

Hi Mike,



So you're nearly finished? Will you be flying this year?

If you come past in May/June Gary Hertzler will be here again for more Ez talk :^)

 



Bill



On 9 April 2014 15:44, MikeDunlop <mdunlop001(at)aol.com (mdunlop001(at)aol.com)> wrote:

 [quote]--> AeroElectric-List message posted by: "MikeDunlop" <mdunlop001(at)aol.com (mdunlop001(at)aol.com)>

  

 I'm finishing off my electrical system in a Long-EZ that includes the SD-8, exactly as per the Z13/8 and have to make a final choice of the main alternator.

 

 For cost and availability locally I've decided to go with either a Lucas 60amp or 70amp. The advice I'm seeking is regarding the regulator, these units have an internal regulator, so do I keep the internal regulator? (remember the Z13/8 has the OV protection between the regulator and the bus) or do I do a conversion to use a B&C external regulator (I have a spare one I could use).

  

 I've read many, many threads on OV and runaway alternators etc. and am not too sure if using the internal regulator in the Z13/8 architecture will give me complete protection.

 

 Regards

 

 Mike Dunlop (UK)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=421821#421821

 

 

 

 

 

 

 

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 http://forums.matronics.com

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 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

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 [b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Apr 09, 2014 12:15 pm Post subject: Z13/8 Main Alternator.

At 09:44 AM 4/9/2014, you wrote:

 	  Quote: 	
		  



I'm finishing off my electrical system in a Long-EZ that includes 

the SD-8, exactly as per the Z13/8 and have to make a final choice 

of the main alternator.



For cost and availability locally I've decided to go with either a 

Lucas 60amp or 70amp. The advice I'm seeking is regarding the 

regulator, these units have an internal regulator, so do I keep the 

internal regulator? (remember the Z13/8 has the OV protection 

between the regulator and the bus) or do I do a conversion to use a 

B&C external regulator (I have a spare one I could use).



I've read many, many threads on OV and runaway alternators etc. and 

am not too sure if using the internal regulator in the Z13/8 

architecture will give me complete protection.


	


    Alternators with built in regulators . . . as a GENERAL

    rule, DO NOT feature ov protection consistent

    with legacy design goals. One exception I'm aware of

    is PlanePower who appears to be using a customized

    built-in regulator with crowbar ov protection and

    positive crew-controlled power to the field.



    At the time of this writing, it's the ONLY alternator

    offering that conforms to the legacy alternator control/

    ov protection philosophy.



    I'm not sure if I understand your question . . . The

    SD-8 should be installed as shown in the drawing.

    Further, its ov protection, control and regulation

    is entirely independent of any choices you make for

    a main alternator.



    If you're contemplating an over-the-counter automotive

    alternator with built in regulator . . . it will

    PROBABLY perform as advertised. But it will not conform

    to the design goals adopted by all TC aircraft and the

    majority of OBAM aircraft.



    If you have a B&C alternator controller laying around,

    it's generally not difficult to modify any stock automotive

    machine to accept EXTERNAL power, regulation, and protection.

    If you're not up to the task of doing the mod, a local

    alternator repair shop may be willing/able to do it

    for you.

   Bob . . .

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MikeDunlop

Joined: 02 Jan 2012
Posts: 15

Posted: Wed Apr 09, 2014 12:22 pm Post subject: Re: Z13/8 Main Alternator.

Bill,



Nice to hear from you again, I've called by your hangar a few times but missed you.



Yes I'm hoping to get things wrapped up soon and start the testing phase. 



I will definitely like to meet Gary again and talk EZ,  I picked up some very useful information last time that made me change the cowling air intake design and the prop attachment method.



Regards



Mike

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MikeDunlop

Joined: 02 Jan 2012
Posts: 15

Posted: Wed Apr 09, 2014 12:31 pm Post subject: Re: Z13/8 Main Alternator.

Bob,



Thanks very much for the information.  I will modify the alternator and use the B&C regulator.



The SD-8 is installed exactly as per Z13/8, totally independent of the main alternator.



Regards



Mike (UK)

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Bill Allen

Joined: 24 Aug 2009
Posts: 42
Location: UK

Posted: Thu Apr 10, 2014 10:07 am Post subject: Z13/8 Main Alternator.

Yes, I was away Jan/Feb. 



I'll be back here much more after Easter as Gary will be here then, so May/June would be a good time - call or text me?

Bill



 



On 9 April 2014 21:22, MikeDunlop <mdunlop001(at)aol.com (mdunlop001(at)aol.com)> wrote:

[quote] --> AeroElectric-List message posted by: "MikeDunlop" <mdunlop001(at)aol.com (mdunlop001(at)aol.com)>

 

 Bill,

 

 Nice to hear from you again, I've called by your hangar a few times but missed you.

 

 Yes I'm hoping to get things wrapped up soon and start the testing phase.

 

 I will definitely like to meet Gary again and talk EZ,  I picked up some very useful information last time that made me change the cowling air intake design and the prop attachment method.

 

 Regards

 

 Mike

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=421841#421841

 

 

 

 

 

 

 

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 -List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 [b]

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