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Alternator to Starter Fixing Bracket

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rv10free2fly(at)yahoo.com
Guest

Posted: Thu Aug 09, 2012 1:53 am Post subject: Alternator to Starter Fixing Bracket

Hi there guys,



I've just installed my Plane Power main alternator and it appears that the connecting bracket which fits between the alternator and my B&C starter doesn't fit.  Plane Power have advised me that their connecting bracket won't fit the B&C starter.



Has anyone else who has installed the Plane Power/B&C starter combination please tell me what they did to overcome this challenge.



If all else fails I'll just have to fabricate my own bracket?



Warm regards



Patrick Pulis

Adelaide, South Australia

woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Thu Aug 09, 2012 12:05 pm Post subject: Re: Alternator to Starter Fixing Bracket

Here's mine with a SkyTec starter.

_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

rj_todd(at)yahoo.co.uk
Guest

Posted: Thu Aug 09, 2012 12:23 pm Post subject: Alternator to Starter Fixing Bracket

Hi Myron,

  

 I think something's missing .... (there's no attachment nor inbedded photo)

  

 Best wishes,

  

 Rodger



--- On Thu, 9/8/12, woxofswa <woxof(at)aol.com> wrote:



  	  Quote: 	
		  

From: woxofswa <woxof(at)aol.com>

Subject: Re: Alternator to Starter Fixing Bracket

To: rv10-list(at)matronics.com

Date: Thursday, 9 August, 2012, 22:05



 --> RV10-List message posted by: "woxofswa" <woxof(at)aol.com (woxof(at)aol.com)>



Here's mine with a SkyTec starter.



--------

Myron Nelson

Mesa, AZ

Emp completed, QB wings completed, legacy build fuse in mostly done, finishing kit in progress.





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=380548#380548http://www.matronics.com/Nav               - MATRONICS WEB                 -Matt Dralle, Listm/contribution" =======





	
 [quote][b]

woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Thu Aug 09, 2012 1:39 pm Post subject: Re: Alternator to Starter Fixing Bracket

>>I think something's missing .... (there's no attachment nor inbedded photo) <<

Hmmm,



I linked a picture from photobucket and I see it on both my computer and my Iphone, so I'm not sure or savvy enough to know what the problem is.

_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Thu Aug 09, 2012 2:14 pm Post subject: Re: Alternator to Starter Fixing Bracket

I see the picture. I think it shows the bracket which doesn't fit his starter.

_________________
Bob Turner
RV-10 QB

rv10free2fly(at)yahoo.com
Guest

Posted: Thu Aug 09, 2012 4:35 pm Post subject: Alternator to Starter Fixing Bracket

The Plane Power bracket fits perfectly with the SkyTec starter but not the B&C starter.



Warm regards



Patrick



On 10/08/2012, at 5:35 AM, "woxofswa" <woxof(at)aol.com> wrote:



 	  Quote: 	
		   

 

 Here's mine with a SkyTec starter.

 

 

 

 --------

 Myron Nelson

 Mesa, AZ

 Emp completed, QB wings completed, legacy build fuse in mostly done, finishing kit in progress.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=380548#380548

woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Sun Aug 12, 2012 5:36 am Post subject: Re: Alternator to Starter Fixing Bracket

To be honest, I don't see what that cross bracket accomplishes. Both connecting points are already affixed to the engine case, either directly in the case of the starter or by the U-bracket in the case of the alternator.  I guess it adds a bit of lateral strain relief on the alternator bracket, but of that bracket weren't beefy enough for that job, you'd be in trouble regardless.



I have it because it all fits, but I'm wondering if that cross brace is even necessary. What am I missing?

_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

carl.froehlich(at)verizon
Guest

Posted: Sun Aug 12, 2012 6:14 am Post subject: Alternator to Starter Fixing Bracket

Assuming you connect your engine ground to the starter (the largest load

should get the best ground) with the same #2 or #4 wire you used for starter

power, this bracket between the alternator and starter provides a good

ground scheme for the alternator.  If the bracket does not fit, replacing it

with a short piece of #6 wire with appropriate size ring terminals will

provide the needed alternator ground.  The engine ground will be on this

same attach point as the alternator bracket (or alternator ground wire).



Considering the current flow, I don't view the engine case (and the various

bolts and brackets) to be adequate ground for either the alternator or

starter.



Carl

RV-10 (33 hours)

RV-8A (800 hours)



--

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Sun Aug 12, 2012 6:28 am Post subject: Alternator to Starter Fixing Bracket

Hmm,

I don't see that bracket as adding anything to ground path. The other

attach points to the engine case accomplish that.

If you look at any certified aircraft, neither the starter nor the

alternator have individual grounding cables. The engine case is a big

hunk of aluminum. Aluminum is an excellent electrical conductor.The

ground is normally connected to one of the sump bolts near the rear of

the engine, then directly to the firewall. I don't know why Vans

prefers a couple straps around the engine mounts, when a single

braided cable from the case to the firewall does an equally good job

with less hassle. Multiple ground paths are not desirable, giving

ground loop opportunities.

The bracket strap is there for rigidity between the starter and

alternator. Alternators want to vibrate a lot. If you have ever seen

one that a bolt got loose on, you will see what I mean. A loose bolt

will wallow out the hole in the alternator and its bracket

substantially in just a few hours of operation.

Kelly



On Sun, Aug 12, 2012 at 7:14 AM, Carl Froehlich

<carl.froehlich(at)verizon.net> wrote:

[quote] 



 Assuming you connect your engine ground to the starter (the largest load

 should get the best ground) with the same #2 or #4 wire you used for starter

 power, this bracket between the alternator and starter provides a good

 ground scheme for the alternator.  If the bracket does not fit, replacing it

 with a short piece of #6 wire with appropriate size ring terminals will

 provide the needed alternator ground.  The engine ground will be on this

 same attach point as the alternator bracket (or alternator ground wire).



 Considering the current flow, I don't view the engine case (and the various

 bolts and brackets) to be adequate ground for either the alternator or

 starter.



 Carl

 RV-10 (33 hours)

 RV-8A (800 hours)



 --

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

rv10free2fly(at)yahoo.com
Guest

Posted: Mon Aug 13, 2012 3:16 am Post subject: Alternator to Starter Fixing Bracket

Myron, I managed to modify the Plane Power bracket to fit to the B&C starter, now that's all done, on to the next step, fitting the propeller governor in the correct orientation and completing the baffling.



Onwards and upwards!



Warm regards



Patrick



On 12/08/2012, at 11:06 PM, "woxofswa" <woxof(at)aol.com> wrote:



 	  Quote: 	
		   

 

 To be honest, I don't see what that cross bracket accomplishes. Both connecting points are already affixed to the engine case, either directly in the case of the starter or by the U-bracket in the case of the alternator.  I guess it adds a bit of lateral strain relief on the alternator bracket, but of that bracket weren't beefy enough for that job, you'd be in trouble regardless.

 

 I have it because it all fits, but I'm wondering if that cross brace is even necessary. What am I missing?[/b]

 

 --------

 Myron Nelson

 Mesa, AZ

 Emp completed, QB wings completed, legacy build fuse in mostly done, finishing kit in progress.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=380735#380735

woxofswa

Joined: 12 Aug 2008
Posts: 349
Location: AZ

Posted: Mon Aug 13, 2012 10:02 am Post subject: Re: Alternator to Starter Fixing Bracket

Pat,



I'm pretty much right with you only I'm dealing with A/C install issues as well.  Didn't Barrett do your engine?  I think I saw it on the bench when I toured their facility.  Small world.

_________________
Myron Nelson
Mesa, AZ
Flew May 10 2014

rv10free2fly(at)yahoo.com
Guest

Posted: Mon Aug 13, 2012 11:37 am Post subject: Alternator to Starter Fixing Bracket

I hope that the A/C install goes well for you Myron.



Yes that was my engine you saw at Barretts. Rhonda, Allen and the entire Barrrett team bent over backwards to help me out.  They did an excellent job and the engine looks great, thanks to their advice and that of Robin Marks.



Warm regards



Patrick



On 14/08/2012, at 3:32 AM, "woxofswa" <woxof(at)aol.com> wrote:



 	  Quote: 	
		   

 

 Pat,

 

 I'm pretty much right with you only I'm dealing with A/C install issues as well.  Didn't Barrett do your engine?  I think I saw it on the bench when I toured their facility.  Small world.

 

 --------

 Myron Nelson

 Mesa, AZ

 Emp completed, QB wings completed, legacy build fuse in mostly done, finishing kit in progress.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=380853#380853

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