Today's Message Index:
----------------------
1. 02:13 AM - missing messages [was: Re: 30A PM alternator and Z101?] (Rowland Carson)
2. 05:53 AM - missing messages [was: Re: 30A PM alternator and Z101?] (user9253)
3. 06:28 AM - Re: missing messages [was: Re: 30A PM alternator and Z101?] (Charlie England)
4. 07:02 AM - Re: 30A PM alternator and Z101? (johnbright)
5. 07:56 AM - Re: missing messages [was: Re: 30A PM alternator and Z101?] (Rowland Carson)
6. 10:05 AM - Re: 30A PM alternator and Z101? (Robert L. Nuckolls, III)
7. 11:07 AM - Re: 30A PM alternator and Z101? (Robert L. Nuckolls, III)
8. 05:13 PM - Hangar hoist motor question (rparigoris)
Message 1
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| Subject: | Re: 30A PM alternator and Z101?] |
On 2022-05-18, at 01:03, Charlie England <ceengland7@gmail.com> wrote:
> On a completely different subject, is anyone having an issue like mine, on receiving
emails from the list?
> I frequently see the reply (as this one, which is Bob's reply), but I never see
the original message unless I log into the Matronics *forum* & find the thread.
This is a fairly common problem for me; I'm set up for receiving every post
via email. I never find the original post in my spam/junk folders.
Ditto, ditto!
I have never managed to find a pattern in the messages that dont reach my inbox.
Like you, I only become aware of them when I see a response.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
Message 2
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| Subject: | Re: missing messages [was: Re: 30A PM alternator and Z101?] |
Put this web address in your browser shortcuts:
http://forums.matronics.com/viewforum.php?f=3
Sometimes messages to Bob are missing, but none others.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506831#506831
Message 3
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| Subject: | Re: missing messages [was: Re: 30A PM alternator and |
Z101?]
On Wed, May 18, 2022 at 7:56 AM user9253 <fransew@gmail.com> wrote:
>
> Put this web address in your browser shortcuts:
> http://forums.matronics.com/viewforum.php?f=3
> Sometimes messages to Bob are missing, but none others.
>
> --------
> Joe Gores
>
That's where I've been going to see the missing messages. I'm set up to get
individual emails from the list, the way everyone did back in prehistoric
times before web-based forums. After Matt added the web-based format, we
were allowed to keep various forms of email delivery, or move to the forum
format. I chose to stay with email format because it's a 'push' type
system; I don't (normally) need to remember to actively sign in to a web
site to see messages because they show up in my email inbox.
Another inconsistency is that Matt's 'boilerplate' that appears at the
bottom of most messages doesn't show up in some users' messages. For
instance, it shows up with your messages (I snipped it out for this reply),
but it never shows up in Bob's messages. I've assumed that it was due to
some of us being on email delivery and some of us using the forum format,
but I have no way to verify that.
Charlie
Message 4
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| Subject: | Re: 30A PM alternator and Z101? |
Ceengland wrote:
> If OV protection is used, You'd need a relay on the output anyway.
>
> ... I'd also bet that there's a little wide-ratio planetary gearbox in the
nose, to get the magnet spinning fast enough to make that kind of power
when mounted on the low rpm vacuum pad.
>
> Anyone know if it's an 'outrunner' or 'inrunner'?...
>
>
>
OV protection is in the regulator.
Its an outrunner, the outside case spins.
No gearbox in the Monkworkz PM alternator: Yep, it's direct drive, the only thing
between the generator shaft and the vacuum spline gear is a shear coupling.
Bill at Monkworkz.com
--------
John Bright, RV-6A, at FWF, O-360
Z-101 single batt dual alt SDS EM-5-F.
john_s_bright@yahoo.com, Newport News, Va
https://drive.google.com/folderview?id=1u6GeZo6pmBWsKykLNVQMvu4o1VEVyP4K
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506833#506833
Attachments:
http://forums.matronics.com//files/2022_05_18_09_57_25_114.pdf
Message 5
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| Subject: | Re: missing messages [was: Re: 30A PM alternator and |
Z101?]
On 2022-05-18, at 13:53, user9253 <fransew@gmail.com> wrote:
> Put this web address in your browser shortcuts:
> http://forums.matronics.com/viewforum.php?f=3
> Sometimes messages to Bob are missing, but none others.
Joe - thanks for the URL, but I do not have any trouble seeing all messages when
I use a web browser.
I normally read messages using my local e-mail client which downloads, to my own
machine, messages from my several e-mail accounts and presents them all for
reading in one place. It seems that either my e-mail client or the Matronics mail
server has some sort of occasional blind spot, and a message is not downloaded
to my own machine.
It doesnt seem to happen all that frequently, so I dont want to adopt the habit
of daily going off to look at the Matronics messages in a web browser, just on
the off-chance that (as far as my mail client is concerned) a message might
have disappeared.
For anyone who would like to do some detective work, my environment is:
Mac Mini M1
Mac OS Monterey v12.3.1
Mac Mail v16.0
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
Message 6
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| Subject: | Re: 30A PM alternator and Z101? |
>If OV protection is used, You'd need a relay on the output anyway.
Here's their installation data:
http://aeroelectric.com/Mfgr_Data/Monkworkx/MZ-30L%20Installation%20and%20Operation%20Manual%202021.pdf
Seems it has a 'outrunner' style magnet housing
like most PM alternators. It's a 3 phase machine
which goes a long way toward achieving this power
density . . . along with forced air cooling.
>I took a quick look at their web page, and it seems a safe bet that
>it's a high output brushless DC motor (really inverter driven AC)
>like you'd see on a big RC plane, that's being used as a generator
>instead. I'd also bet that there's a little wide-ratio planetary
>gearbox in the nose, to get the magnet spinning fast enough to make
>that kind of power when mounted on the low rpm vacuum pad. Anyone
>know if it's an 'outrunner' or 'inrunner'? I'm thinking something
>similar to this:
><https://hobbyking.com/en_us/turnigy-l3010b-1300-brushless-motor-420w.html>https://hobbyking.com/en_us/turnigy-l3010b-1300-brushless-motor-420w.html
Yeah, adapting one of those products to this application
would require a step-up gearbox . . . which is
exceedingly difficult if the driven mass has much
rotational inertia. We note that the Monkworks
machine's outside diameter is quite small compared
to other products . . . barely larger than the
footprint of the vacuum pump pad.
The companion electronics has ov protection built
in. It also needs forced air cooling . . . not
surprising given it's small volume and footprint
>On a completely different subject, is anyone having an issue like
>mine, on receiving emails from the list?
>I frequently see the reply (as this one, which is Bob's reply), but
>I never see the original message unless I log into the Matronics
>*forum* & find the thread. This is a fairly common problem for me;
>I'm set up for receiving every post via email. I never find the
>original post in my spam/junk folders.
Outside my wheelhouse. You might drop a note to
byte thrasher in charge, Matt D and apprise him
of your issues.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 7
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| Subject: | Re: 30A PM alternator and Z101? |
>I took a quick look at their web page, and it seems a safe bet that
>it's a high output brushless DC motor (really inverter driven AC) like
>you'd see on a big RC plane, that's being used as a generator instead.
Charlie,
It occurred to me that I'd not wandered through
the offerings in RC motors for some time. A client
asked me to sift through the catalogs about 10
years ago with the thought of adapting a 'tiny'
motor to an actuator design. We didn't find anything
useful the task at that time.
Revisiting the market today reveals some motors
on the BEEFY end of the spectrum with current
and Kv ratings that just MIGHT lend themselves
to a direct drive, 3 phase, pm alternator design.
Some interesting finds:
https://tinyurl.com/yy892euu
https://tinyurl.com/39jtnhyj
https://tinyurl.com/2p8stwb7
https://tinyurl.com/4kcmkazf
It might be that none of these would be
optimal candidates, at least they suggest
some possibilities.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 8
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| Subject: | Hangar hoist motor question |
Hi Group
A slightly off topic question:
I have a 1,100lb electric hoist in hangar.
I want to install it on an electric trolley.
In past used Northern tool trolleys. Very simple, motor has 3 wires. 1 wire gets
hooked up to neutral and when you put power to right wire it goes right and
if you put power to the left wire it goes left. There's a capacitor that stays
permanently connected between left and right.
Problem is the motor was not very powerful and it would only drive 1 side, so if
weight wasn't distributed just perfect it would either sit and spin or get jammed
sideways and I beam. I bought a second one and made it drive both sides.
Worked great. I just paralleled motors. It wasn't quite happy with only 1 capacitor
so I paralleled two. Starting torque was greatly increased using 2 capacitors
with the 2 motors paralleled.
So on the Northern tool trolleys, the capacitors stayed permanently connected to
right and left.
Now for my current project, Northern tools no longer offers the electric trolley.
I purchased a pair of no name China 200 watt knock offs. Motor is very similar
with 3 wires. It has a capacitor that is disconnected when off. Then it connects
the capacitor between left and right wires for either left or right. They
are using a very switch with jumpers to accomplish this task. I want to extend
the 4' pendant wire to 25' as I have done with the Northern Tool units. It's
not very convenient to try and house 2 capacitors in the pendant. It's very
to house 2 capacitors on the hoist. I would prefer to just permanently connect
the 2 paralleled capacitors at the hoist to left and right.
Is there a reason to use the complicated disconnect the capacitors between left
and right when unit is off?
The capacitors for the 200 watt motor:
CBB60 40uF =/- 5%
450VAC C SO SH
25/70/21 50/60HZ
1.770" Diameter
3.645" Length
Thx.
Ron P.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506839#506839
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