Today's Message Index:
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0. 10:26 AM - [Please Read] - Last Official Day of List Fund Raiser! (Matt Dralle)
1. 10:42 AM - Auto [Healeys] Electrics question (Al Fuller)
2. 03:27 PM - Seeking Battery Box for Group Size BTX20L Battery (Art Zemon)
3. 05:10 PM - Re: Seeking Battery Box for Group Size BTX20L Battery (Charlie England)
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| Subject: | [Please Read] - Last Official Day of List Fund Raiser! |
Dear Listers,
It's November 30th and that always means a couple of things. Today is my birthday
again - 59! :-) I've been running these Lists since I was 28!
But, it also means that it's that last official day of the Matronics Email List
Fund Raiser! If you been thinking about picking up one of those really nice
incentive gifts now is the time to jump on it!!
If you've been meaning to make a Contribution this month but have been putting
it off for some reason, NOW is the time!
I will be posting the List of Contributors in a few days, so you'll probably want
to be known as a person that supported the Lists!
I want to thank everyone that has so generously made a Contribution this year in
support of our Lists. It is your generosity that keeps this operation running
and I don't ever forget it.
The List Contribution Web Site is fast and easy. Please support our habit by making
your Contribution right now:
https://matronics.com/contribution
Or, by dropping a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
USA
Thank you in advance!
Matt Dralle
Matronics Email List Administrator
Message 1
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| Subject: | Auto [Healeys] Electrics question |
All: quoted below is a generator question and a proposed answer as to why
the generator and regulator both failed.
Any thoughts?
________________
Best Regards,
Al Fuller
---------- Forwarded message ---------
From: josef-eckert--- via Healeys <healeys@autox.team.net>
Subject: Re: [Healeys] Electrics
healeys@autox.team.net>
Hello Mike,
I presume the points sticked together, causing the generater to produce a
high output voltage at the generastor D-Terminal, which resulted in an
extremely high current which welded the points together. The generator got
extremely hot (had to gave much more power than it was designed for) and
the bar broke out.
Simple, but that=C2=B4s to my opinion what happened.
Josef Eckert
Germany
-----Original-Nachricht-----
Betreff: [Healeys] Electrics
Datum: 2022-11-27T02:52:14+0100
Von: "Mike Sinclair" <phoenix722@comcast.net>
An: "Healey List" <healeys@autox.team.net>
Need some enlightenment. Awhile back, the car (BJ8) was running fine, but
I noticed the little red light that says the battery isn't being charged
was on. (I do keep the battery on a Battery Minder" when not in use.)
Chased the system down, and discovered the generator was putting out zero
volts. Adjusted the fan belt, no change. On closer inspection, the rotor
was damaged (a bar was actually missing). Had the unit rebuilt, and it is
working fine, but still had the little red light wouldn't go out. Checked
all the connections, continuity, voltage regulator, couldn't find any thing
out of the ordinary. Finally, upon closer inspection of the regulator with
a mirror, found the contacts on one of the coils were welded together, and
the leaf spring holding that contact was completely severed. According to
the manual, this is the "cutoff coil". New regulator solved the problem.
Now the questions.
1. What could cause the rotor to be damaged?
2. What could cause the points to weld together?
3. Which likely failed first? Did one cause the other?
4. I'm guessing the points stuck together first, and caused the leaf spring
to break, so first the points were always "closed", and then always "open".
5. Would any of this cause damage to anything else, e.g., the battery?
Again, everything seems normal, now. Battery holds charge well.
Mike
=EF=BB
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Message 2
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| Subject: | Seeking Battery Box for Group Size BTX20L Battery |
Folks,
I decided to try a cheap AGM battery in my airplane and it is working
great. So well that I want to swap out the large battery box for one that
is smaller and fits more nicely. But my battery (Super Start Power Sport
Battery
<https://www.oreillyauto.com/detail/c/power-sport-agm/more-powersport/atv---motorcycle-accessories/batteries/adae772e612e/super-start-power-sport-battery-group-size-btx20l-agm/ssbn/etx20l?q=batteries&pos=0>)
is slightly larger than the EarthX batteries so their boxes won't fit.
Battery Dimensions: 6 1/8 (h) x 3 1/2 (w) x 7 (l)
Group Size BTX20L
Any thoughts on places to shop?
-- Art Z.
--
My blog: CheerfulCurmudgeon.com
*Wrinkles mean you laughed. Grey hair means you cared. Scars mean you
lived.*
Message 3
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| Subject: | Re: Seeking Battery Box for Group Size BTX20L Battery |
On 11/30/2022 5:26 PM, Art Zemon wrote:
> Folks,
>
> I decided to try a cheap AGM battery in my airplane and it is working
> great. So well that I want to swap out the large battery box for one
> that is smaller and fits more nicely. But my battery (Super Start
> Power Sport Battery
> <https://www.oreillyauto.com/detail/c/power-sport-agm/more-powersport/atv---motorcycle-accessories/batteries/adae772e612e/super-start-power-sport-battery-group-size-btx20l-agm/ssbn/etx20l?q=batteries&pos=0>)
> is slightly larger than the EarthX batteries so their boxes won't fit.
>
> Battery Dimensions: 6 1/8 (h) x 3 1/2 (w) x 7 (l)
> Group Size BTX20L
>
> Any thoughts on places to shop?
>
> -- Art Z.
Hi Art,
I'd start in my scrap aluminum bin. ;-) Here's what I did for a firewall
mount on my RV7 project. There's a 3/4x3/4x1/8 angle running under the
bottom of the tray. The other pic shows my previous RV4's battery
installation. Since its firewall has a 'step', I simply set the battery
on the conveniently provided shelf and used a long stainless hose clamp
to hold it down. Note that the -4 spent quite a bit of time in, shall we
say, unusual attitudes. Because these batteries only vent when horribly
abused, if yours is inside the fuselage all that should be required is
at most something around the base to keep it from shifting sideways (can
be short sections of light weight angle) and a strap over the top to
hold it down.
BTW, I'm sure that's a great battery, but I've been running the cheapest
no-name AGMs I can find on Amazon or ebay for over 20 years. Prices have
varied quite a bit depending on the price of lead, but I think the most
I've paid is around $60. More typical is ~$40 for a 20-22AH battery.
Some extra effort in reading spec sheets is required, but most in the
20AH range will start a Lyc without any issues. I've only had one early
failure; I discovered a pinhole in one that was mounted in the -4 when
it quit working after about 6 months. I'm certain it was already damaged
when I installed it (likely shipping damage) and it took it 6 months to
die. I typically get 4-5 years out of them unless I abuse them somehow,
like forgetting the master after flying. I've recommended this technique
to others as well, and no one's complained yet.
Hope that's useful info,
Charlie
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