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A65 alternator bracket mounting #765174
02/12/19 3:09 am
02/12/19 3:09 am
Joined: Dec 2002
Posts: 410
Chelmsford MA
M
MarcB Offline OP
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Posts: 410
Chelmsford MA
I'm looking to install a 67-style alternator bracket to a case that has the multi-stepped studs.
Replace this:
[Linked Image]

With this:
[Linked Image]
And this:
[Linked Image]

Is it do-able? It seems that the 67 cases have a bit more surface for the bracket to sit on, but otherwise the parts fit.

Also, why is the stud tapped for two different sizes at one end? Does the bracket take a nut, then the stator sit against that? Why not have the stator nut also hold the bracket in place?

Does anyone have a good picture of this setup?

Thanks in advance

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Re: A65 alternator bracket mounting [Re: MarcB] #765263
02/13/19 2:39 am
02/13/19 2:39 am
Joined: Sep 2014
Posts: 34
portland or
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drunkenmonkz Offline
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portland or
I was contemplating doing the same thing with my 64 im building. Following to see what people say.

Re: A65 alternator bracket mounting [Re: MarcB] #765291
02/13/19 3:25 pm
02/13/19 3:25 pm
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Posts: 410
Chelmsford MA
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MarcB Offline OP
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Chelmsford MA
No responses yet, but I can't imagine it would do anything but help things out. It seems that the three self-standing studs have more potential for flex, that could cause contact between the rotor and stator. But that's just a theory and I might be over-engineering a solution to a non-existent problem, apart from protecting the cases from a loose chain.

Re: A65 alternator bracket mounting [Re: MarcB] #765303
02/13/19 5:07 pm
02/13/19 5:07 pm
Joined: Aug 2001
Posts: 5,167
Stone Creek OH USA
R
Rich B Online happy

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Posts: 5,167
Stone Creek OH USA
Without looking at a set of cases that used the alternator support, memory says the cases were machined for the support to sit into the case. A standard 3 stud case wouldn't be machined.

I have run later cases with the support and early cases without. Do a good job at assembly making sure the gap on the alternator is consistent all the way around the stud arrangement works. The cup that was added to support the alternator or the cases with the alternator support cast in just reduce effort to install the stator since you are somewhat fixed in there the stator ends up.


Never underestimate the human ability to elevate stupid to a whole new level!.
Re: A65 alternator bracket mounting [Re: Rich B] #765313
02/13/19 7:05 pm
02/13/19 7:05 pm
Joined: Dec 2002
Posts: 410
Chelmsford MA
M
MarcB Offline OP
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MarcB  Offline OP
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Joined: Dec 2002
Posts: 410
Chelmsford MA
Originally Posted by Rich B

I have run later cases with the support and early cases without.

To install the bracket on the studs, is there a nut between the stator and the bracket, on the bigger portion of the stud? Hard to tell from the parts manual.

Re: A65 alternator bracket mounting [Re: MarcB] #765357
02/14/19 12:48 pm
02/14/19 12:48 pm
Joined: Dec 2002
Posts: 410
Chelmsford MA
M
MarcB Offline OP
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MarcB  Offline OP
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Joined: Dec 2002
Posts: 410
Chelmsford MA
After watching this video from Lowbrow Customs about putting the primary together on a triumph, I actually feel a bit better about just running the multi-stepped studs.
https://youtu.be/AwiEHtP0LcI

As long as I keep the parts in good working order, I guess it's not as big of a concern as I originally thought.


Moderated by  Allan Gill, Jon W. Whitley 

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