Today's Message Index:
----------------------
1. 06:15 AM - Battery maintainers (Ron Bur)
2. 07:30 AM - Re: Battery maintainers (David Carter)
3. 06:22 PM - Re: Too many Circuit breakers.... (andymeyer)
4. 07:18 PM - Re: Too many Circuit breakers.... (user9253)
5. 07:38 PM - Re: AC current reading for Revmaster engine (dj_theis)
6. 07:46 PM - Re: AC current reading for Revmaster engine (dj_theis)
Message 1
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| Subject: | Battery maintainers |
It seems the all the new battery minders do not include an adapter for a cigar
plug as I have in my soon to be sold RV6A.
Any recommendations?
1. For type of maintainer?
2. To modify my old plug in adapter by stripping wires and putting attachments
for the clip on features they all possess?
Thanks to all,
Ron Burnett
Electrically challenged Marine
May you have the Lord's blessings today!
Sent from my iPad
Message 2
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| Subject: | Re: Battery maintainers |
I've had great results with an earlier version of this maintainer. I
attached the eyelet adapter to the battery & affixed the other end to the
engine mount just inside the oil filler door in my cowling. I leave it
plugged in whenever the plane is in the hangar.
https://amazon.com/NOCO-Fully-Automatic-X-Connect-Terminal-Accessory/dp/B0B
6TZM9GN
Here's a less expensive, lower-capacity version that should be adequate for
most of the batteries in our OBAM planes:
https://amazon.com/NOCO-Fully-Automatic-X-Connect-Terminal-Accessory/dp/B08
MG3G9NV
---
David Carter
david@carter.net
On Tue, Sep 27, 2022 at 9:16 AM Ron Bur <ronburnett@charter.net> wrote:
>
> It seems the all the new battery minders do not include an adapter for a
> cigar plug as I have in my soon to be sold RV6A.
>
> Any recommendations?
>
> 1. For type of maintainer?
>
> 2. To modify my old plug in adapter by stripping wires and putting
> attachments for the clip on features they all possess?
>
> Thanks to all,
> Ron Burnett
> Electrically challenged Marine =F0=9F=98=81
>
>
> May you have the Lord's blessings today!
> Sent from my iPad
>
===========
===========
===========
===========
===========
>
>
Message 3
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| Subject: | Re: Too many Circuit breakers.... |
Bob, and the rest of the AeroElectric crew,
Thank you for all of the guidance. About to install this fun in the next week or
two - just need to take a couple days away from work and a long weekend.
Any final thoughts on this configuration?
My only lingering question - to get rid of the diode drop (NTE53016), do I pose
any risk in running a wire from the Master Relay (out) to the NC connection on
the E Bus Relay(Blue)? (Redundant wire paths, diode keeps the Aux Bus Relay
from being a single point of failure, but during normal operation, diode doesn't
flow any current - it all goes through the added wire.)
Andy
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507971#507971
Attachments:
http://forums.matronics.com//files/z101b_andymeyer_r4_308.png
Message 4
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| Subject: | Re: Too many Circuit breakers.... |
During normal operation, the diode should be conducting current.
It doesn't matter if the diode does drop a volt. The alternator output is 14 volts.
That still leaves 13 volts for the loads. That is plenty.
An additional wire does nothing except adds more possible failure points.
The voltage drop could be cut in half by using a Schottky diode. STPS24045TV
But it will cost 5 times as much.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507972#507972
Message 5
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| Subject: | Re: AC current reading for Revmaster engine |
> Quote:
> Increasing air flow is job 1, wrt cooling this stator. Impregnating the wiring
is an improvement that I advocate but do not have data on it. My direct conversation
with the stator wire manufacturer, and their recommendation suggests
to me it would be an improvement.
>
> Did they quantify 'improvement'?
Good point.
The conversation was a follow up of my question, "what is the temperature rating
of the magnet wire being used."
His response was that the coating was "designed to be soldered without direct
abrasive removal of the insluation." (i.e. the heat from soldering would remove
the insulation.). From memory, his suggestion was that the wire should be
coated to achieve the desired insulation temperature rating. No specific level
of improvement was defined other than the implicit message that the wire was
not designed to be left uncoated in this type of an application.
It's likely that leaving the wire uncoated does not guarantee failure. I would
guess that many or most of the stators don't fail. I don't have statistic on
the failure rate of this design.
It's evident that the unusual localized heating that we've seen (and you show in
the attachment) is suggestive of a very unusual heat source.
I've been kicking this around for a while and it recently occurred to me that perhaps
some of localized coil failure is a result of the single phase regulator
rectifier (that is little more than an SCR) going through a catastrophic failure
as a short. this would provide the full current from the battery to feed
back through the stator, at least until one of the 30 amp fuses blow.
I don't think there is any other power source other than the battery, available
to cause so much damage as we see on some of these stators. It also might explain
a single coil buring up. As you've often brought up, an open wire will
melt at a spot somewhere in the middle. Has anyone ran a short circuit test on
a multi-coil stator like this? Would it not make some sense that one isolated
coil could go through the rapid rise in resistance and burn up before the rest?
Attached is the charge circuit as I believe it is with the OEM regulator. I've
added an overvoltage relay but I think we can ignore that component from the
discussion.
Thoughts?
--------
Dan Theis
Scratch building Sonex #1362
Still working on the Revmaster Alternator improvement
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507973#507973
Attachments:
http://forums.matronics.com//files/revmaster_2300_rev13_alternator_ckt_151.pdf
Message 6
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| Subject: | Re: AC current reading for Revmaster engine |
> BTW . . . I've searched my library for a copy
> of the R-2300 installation manual and came up
> empty. Can anyone point me to a download link
> or email me a copy?
Attached is the "Electrical" portion of the Revmaster manual.
--------
Dan Theis
Scratch building Sonex #1362
Still working on the Revmaster Alternator improvement
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507974#507974
Attachments:
http://forums.matronics.com//files/revmatser_r_2300_manual_c__cdi_electrical_101.pdf
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