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nuckolls.bob(at)aeroelect
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 Posted: Tue Sep 07, 2010 7:12 am Post subject: Thermally robust PM rectifier/regulators |
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At 09:45 PM 9/6/2010, you wrote:
| Quote: | Bob, all, mention is made of the John Deere rectifier/regulator as a
substitute for the Jabiru unit, however, as I recall, the JD unit is
rather pricey, too. Has anyone investigated the Harley Davidson
rec/reg? Can be had for at least two output levels and they're
relatively inexpensive at $35 to $50. Just a thought.
|
Similarly, I have no hard data on the JD regulators.
My references were based on numerous successful applications
of the JD device on the larger PM alternators popular
with the Corvair engine guys. Further, the JD has
the APPEARANCE of thermal robustness . . . larger
enclosure and more fin area.
The REAL comparison of any regulator's performance is to
get temperature data on critical internal parts
under various operating configurations. Unfortunately,
it's very unlikely that we'll get such data. The
next best data is a max operating temperature for
the R/R case as offered here . . .
http://www.bandc.biz/pdfs/PMR1C_outline_REV_D.pdf
The alternative is to rely on anecdotal successes
or to start from scratch and design a new R/R
where getting the numbers is part of the development
process.
Are you aware of any installations flying that use
the HD parts?
Bob . . .
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Tue Sep 07, 2010 9:48 am Post subject: Thermally robust PM rectifier/regulators |
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Bob, Not aware of any flying, unless you count the times I've raced my Shovelhead over Washington Pass from Darlington to Winthrop. I can give a data point for their robustness. The one on my Vibraglide is rigidly mounted and has been there for over 20 years.
Rick
On Tue, Sep 7, 2010 at 10:10 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 09:45 PM 9/6/2010, you wrote:
| Quote: | Bob, all, mention is made of the John Deere rectifier/regulator as a substitute for the Jabiru unit, however, as I recall, the JD unit is rather pricey, too. Has anyone investigated the Harley Davidson rec/reg? Can be had for at least two output levels and they're relatively inexpensive at $35 to $50. Just a thought.
|
Similarly, I have no hard data on the JD regulators.
My references were based on numerous successful applications
of the JD device on the larger PM alternators popular
with the Corvair engine guys. Further, the JD has
the APPEARANCE of thermal robustness . . . larger
enclosure and more fin area.
The REAL comparison of any regulator's performance is to
get temperature data on critical internal parts
under various operating configurations. Unfortunately,
it's very unlikely that we'll get such data. The
next best data is a max operating temperature for
the R/R case as offered here . . .
http://www.bandc.biz/pdfs/PMR1C_outline_REV_D.pdf
The alternative is to rely on anecdotal successes
or to start from scratch and design a new R/R
where getting the numbers is part of the development
process.
Are you aware of any installations flying that use
the HD parts?
Bob . . .
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Zulu Delta
Kolb Mk IIIC
582 Gray head
4.00 C gearbox
3 blade WD
Thanks, Homer GBYM
It is not bigotry to be certain we are right; but it is bigotry to be unable to imagine how we might possibly have gone wrong.
- G.K. Chesterton
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Tue Sep 07, 2010 10:09 am Post subject: Thermally robust PM rectifier/regulators |
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At 12:43 PM 9/7/2010, you wrote:
| Quote: | Bob, Not aware of any flying, unless you count the times I've raced
my Shovelhead over Washington Pass from Darlington to Winthrop. I
can give a data point for their robustness. The one on my Vibraglide
is rigidly mounted and has been there for over 20 years.
|
What's the output rating for the alternator . . .
and do you know how heavily you load it?
Bob . . .
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Tue Sep 07, 2010 10:58 am Post subject: Thermally robust PM rectifier/regulators |
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I put an Ultraglide dynamo in a few years back for 32 amp output. I probably don't load it up much, just lighting and ignition.
Rick
On Tue, Sep 7, 2010 at 1:06 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 12:43 PM 9/7/2010, you wrote:
| Quote: | Bob, Not aware of any flying, unless you count the times I've raced my Shovelhead over Washington Pass from Darlington to Winthrop. I can give a data point for their robustness. The one on my Vibraglide is rigidly mounted and has been there for over 20 years.
|
What's the output rating for the alternator . . .
and do you know how heavily you load it?
Bob . . .
===========
-List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
|
--
Zulu Delta
Kolb Mk IIIC
582 Gray head
4.00 C gearbox
3 blade WD
Thanks, Homer GBYM
It is not bigotry to be certain we are right; but it is bigotry to be unable to imagine how we might possibly have gone wrong.
- G.K. Chesterton
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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_________________
The smallest miracle right in front of you is enough to make you happy.... |
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nuckolls.bob(at)aeroelect
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| Posted: Wed Sep 08, 2010 7:21 am Post subject: Thermally robust PM rectifier/regulators |
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At 01:56 PM 9/7/2010, you wrote:
| Quote: | I put an Ultraglide dynamo in a few years back for 32 amp output. I
probably don't load it up much, just lighting and ignition.
Rick
|
Hmmmm . . . here'a an opportunity for a really good science
experiment . . . assuming it can be conducted with utility
and safety on a motorcycle!
A switchable load on the order of 28 amps or so (0.5 ohm,
500 watt resistor), voltmeter, ammeter and a temperature
readout on r/r case and perhaps alternator wires. First see
if the bus voltage really stays above 13.5 volts with the
load on. Then see what the maximum temperatures are after
they stabilize in cruise.
What's the part number of the HD R/R?
Bob . . .
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