Today's Message Index:
----------------------
1. 02:34 AM - Re: LED questions (Neville Kilford)
2. 02:50 AM - Re: LED questions (Neville Kilford)
3. 03:19 AM - Re: LED questions (Neville Kilford)
4. 07:37 AM - Re: LED questions (Jimmy)
5. 08:02 AM - Re: Infernal congestion engines (Robert L. Nuckolls, III)
6. 09:09 AM - Re: Re: Future replacement for Rotax (Deere Dynamo on eBay) (NEMuzzy)
7. 10:12 AM - RG58 (Ted Lemen)
8. 10:12 AM - crimper (Ted Lemen)
9. 10:47 AM - Re: crimper (Dan Branstrom)
10. 12:34 PM - Re: MEASUREMENTS -- WAS:Infernal congestion (kempthornes)
11. 12:35 PM - Re: Re: Re: Future replacement for Rotax (kempthornes)
12. 03:40 PM - Pitch Trim Help (BAKEROCB@aol.com)
13. 04:22 PM - Re: Future replacement for Rotax (jerb)
14. 04:35 PM - Re: Pitch Trim Help (Ronald J. Parigoris)
15. 04:52 PM - Re: Pitch Trim Help (Matt Prather)
16. 05:12 PM - Re: Pitch Trim Help (Eric M. Jones)
17. 05:46 PM - Re: Pitch Trim Help (Jim V. Wickert)
18. 05:49 PM - Re: Infernal congestion engines (George Braly)
19. 07:10 PM - Re: Pitch Trim Help (David Chalmers)
20. 08:06 PM - Re: Pitch Trim Help (Dave Morris)
21. 08:11 PM - Re: LED questions (Fiveonepw@aol.com)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LED questions |
--> AeroElectric-List message posted by: "Neville Kilford" <nkilford@etravel.org>
John,
Thanks -- anything you have to hand from the archive would be well
appreciated (any format will do nicely). I'm trying to get some background
knowledge about using LEDs for general panel / cabin lighting.
Mark sent over details of his neat annunciator panel solution, and it's inked
into the panel design now. Photos of Mark's panel certainly look good, and I
can't wait to get the finished annunciator into the panel.
Cheers.
Nev
--
Jodel D-150 in progress
UK
----- Original Message -----
From: "John Schroeder" <jschroeder@perigee.net>
Subject: Re: AeroElectric-List: LED questions
> --> AeroElectric-List message posted by: John Schroeder
<jschroeder@perigee.net>
>
> Neville -
>
> Bob has already done what you requested. The archives should have a couple
> of long replies about LEDs that Bob authored. I keep a running log of a
> lot of his answers and can send you what I have. One is a file in MS Word
> and one or two in .pdf format. Let me know if you can take them as
> attachments to an email.
>
> Mark Phillips hangs out on this list and developed a very neat solution
> for an annunciator panel that uses a zener diode and a switch to dim the
> modules. Each module has 3 LED's in it. YOu can get these in red, gree,
> and yellow. Neat stuff. I have a copy of his AutoCAD file.
>
>
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LED questions |
--> AeroElectric-List message posted by: "Neville Kilford" <nkilford@etravel.org>
Ah! Bit of a smooth operator is he? Have you met his new bird?
----- Original Message -----
From: "Neville Kilford" <nkilford@etravel.org>
Subject: Re: AeroElectric-List: LED questions
> --> AeroElectric-List message posted by: "Neville Kilford"
<nkilford@etravel.org>
>
> John,
>
> Thanks -- anything you have to hand from the archive would be well
> appreciated (any format will do nicely). I'm trying to get some background
> knowledge about using LEDs for general panel / cabin lighting.
>
> Mark sent over details of his neat annunciator panel solution, and it's
inked
> into the panel design now. Photos of Mark's panel certainly look good, and
I
> can't wait to get the finished annunciator into the panel.
>
> Cheers.
>
> Nev
>
> --
> Jodel D-150 in progress
> UK
>
> ----- Original Message -----
> From: "John Schroeder" <jschroeder@perigee.net>
> To: <aeroelectric-list@matronics.com>
> Subject: Re: AeroElectric-List: LED questions
>
>
> > --> AeroElectric-List message posted by: John Schroeder
> <jschroeder@perigee.net>
> >
> > Neville -
> >
> > Bob has already done what you requested. The archives should have a
couple
> > of long replies about LEDs that Bob authored. I keep a running log of a
> > lot of his answers and can send you what I have. One is a file in MS Word
> > and one or two in .pdf format. Let me know if you can take them as
> > attachments to an email.
> >
> > Mark Phillips hangs out on this list and developed a very neat solution
> > for an annunciator panel that uses a zener diode and a switch to dim the
> > modules. Each module has 3 LED's in it. YOu can get these in red, gree,
> > and yellow. Neat stuff. I have a copy of his AutoCAD file.
> >
> >
>
>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LED questions |
--> AeroElectric-List message posted by: "Neville Kilford" <nkilford@etravel.org>
Ahem. Replying to the wrong list. Sorry!
do not archive
----- Original Message -----
From: "Neville Kilford" <nkilford@etravel.org>
Subject: Re: AeroElectric-List: LED questions
> --> AeroElectric-List message posted by: "Neville Kilford"
<nkilford@etravel.org>
>
> Ah! Bit of a smooth operator is he? Have you met his new bird?
>
> ----- Original Message -----
> From: "Neville Kilford" <nkilford@etravel.org>
> To: <aeroelectric-list@matronics.com>
> Subject: Re: AeroElectric-List: LED questions
>
>
> > --> AeroElectric-List message posted by: "Neville Kilford"
> <nkilford@etravel.org>
> >
> > John,
> >
> > Thanks -- anything you have to hand from the archive would be well
> > appreciated (any format will do nicely). I'm trying to get some
background
> > knowledge about using LEDs for general panel / cabin lighting.
> >
> > Mark sent over details of his neat annunciator panel solution, and it's
> inked
> > into the panel design now. Photos of Mark's panel certainly look good,
and
> I
> > can't wait to get the finished annunciator into the panel.
> >
> > Cheers.
> >
> > Nev
> >
> > --
> > Jodel D-150 in progress
> > UK
> >
> > ----- Original Message -----
> > From: "John Schroeder" <jschroeder@perigee.net>
> > To: <aeroelectric-list@matronics.com>
> > Subject: Re: AeroElectric-List: LED questions
> >
> >
> > > --> AeroElectric-List message posted by: John Schroeder
> > <jschroeder@perigee.net>
> > >
> > > Neville -
> > >
> > > Bob has already done what you requested. The archives should have a
> couple
> > > of long replies about LEDs that Bob authored. I keep a running log of a
> > > lot of his answers and can send you what I have. One is a file in MS
Word
> > > and one or two in .pdf format. Let me know if you can take them as
> > > attachments to an email.
> > >
> > > Mark Phillips hangs out on this list and developed a very neat solution
> > > for an annunciator panel that uses a zener diode and a switch to dim
the
> > > modules. Each module has 3 LED's in it. YOu can get these in red, gree,
> > > and yellow. Neat stuff. I have a copy of his AutoCAD file.
> > >
> > >
> >
> >
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LED questions |
--> AeroElectric-List message posted by: Jimmy <jhankin@planters.net>
I am new to this list and have a question about cabin lightening.
I fly a Kolb Firefly and use a Lowence 100 GPS. I have problems seeing the GPS.
Is there any way I can light up the dial so I can see what is displayed?
Jimmy Hankinson
912-863-7384
Rocky Ford, Ga. 30455
jhankin@planters.net
Kolb Firefly/447/240hrs
Local field, Pegasus/2000/Grass
Airport JYL/Sylvania, Ga.
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Infernal congestion engines |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 09:31 PM 11/26/2003 -0600, you wrote:
>--> AeroElectric-List message posted by: George Braly <gwbraly@gami.com>
>
>
> >> Not at all. It depends on what you think "less violent"
>means.<<
This is an interesting example of how inexact vernacular
can dilute or even obscure real meaning. We are immersed
in propaganda rich with glowing adjectives and soaring
superlatives trying to sell us stuff. It's easy to
let this imprecise speech creep into discussions where
it's important to communicate at a common level of
understanding. Lord Kelvin (see:
http://www.iec.ch/about/history/lkbio-e.htm )
was quoted as noting ""When you can measure it,
you know something about it."
The act of measuring and then describing behavior
or characteristics in numerical or graphical form
is a powerful foundation of understanding. I
will be the last to suggest that every sentence sprinkled
with non-quantifying adjectives and superlatives is
suspect . . . but I will suggest that you're doing
the speaker and yourself a disservice if you don't
ask to hear or see the MEASUREMENTS that support
the words.
Bob . . .
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RE: Re: Future replacement for Rotax (Deere Dynamo |
on eBay)
--> AeroElectric-List message posted by: "NEMuzzy" <list01@GourmetDamage.com>
Fellow re-routers of wayward electrons-
Here is a link to check for some more details on the dynamo and the
regulator. Note that the RS5115 regulator is listed as an 'open type' as
compared to the RS4131 'short type'. The AM101406 regulator looks to be a
slightly different version of the RS5115.
http://www.kokusandenki.co.jp/english/main.htm
I am cleaning up the shop, and will be putting some of the surplus on eBay.
The Nippondenso 40 A alternator and the 20Amp dynamo are the first to go.
Do a search for 'Dynamo Deere' and you will find it. I bought these with
the intention of using them on a Mazda 13B. When I bought the IO360, I
decided to go with the B&C bolt-on alternator and SD8. That's the nice
thing about Lycomings- you can buy everything you need with a credit card!
(This may be a duplicate message, I am having trouble getting a new address
set up for the spam monsters to use!)
Regards-
Norm Muzzy
Flying Cozy Mk IV
IO-360A3B6D Dual Lightspeed
Z-13 w/ aux battery
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: "Ted Lemen" <tedlem@ecentral.com>
Will the crimping tool for RG 400 also work on RG 58? I am talking about
the tool that B&C sells.
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: "Ted Lemen" <tedlem@ecentral.com>
Can you use the "hex crimper" sold by B&C to crimp "round type" BNC
connectors? I tried it and it seemed ok.
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: "Dan Branstrom" <danbranstrom@verizon.net>
That's exactly what it's supposed to do. If you think of the
cross-sectional area of the ferrule that you're crimping, before it's
crimped, it's a circle. A circle has the largest volume inside for a given
circumfrence. If you change the shape of the circle in any way, the volume
decreases.
When you change the shape of the ferrule to a hex shape, it decreases in
volume and compresses evenly on the wire.
Dan Branstrom
----- Original Message -----
From: "Ted Lemen" <tedlem@ecentral.com>
Subject: AeroElectric-List: crimper
> --> AeroElectric-List message posted by: "Ted Lemen" <tedlem@ecentral.com>
>
> Can you use the "hex crimper" sold by B&C to crimp "round type" BNC
> connectors? I tried it and it seemed ok.
>
>
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | MEASUREMENTS -- WAS:Infernal congestion |
engines
--> AeroElectric-List message posted by: kempthornes <kempthornes@earthlink.net>
engines
At 10:02 AM 11/27/2003 -0600, you wrote:
>--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
><bob.nuckolls@cox.net>
>
> The act of measuring and then describing behavior
> or characteristics in numerical or graphical form
> is a powerful foundation of understanding.
I was trying to buy a piece of real estate when the agent asked, "Are you
an engineer?". I replied that I was and asked how he guessed. He said,
"Every engineer I deal with wants measurements on everything!". YES!!
Mathematics is the foundation of our modern world.
K. H. (Hal) Kempthorne
RV6-a N7HK - Three trips to OSH now.
PRB (El Paso de Robles, CA)
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RE: Re: Future replacement for Rotax |
(Deere Dynamo on eBay)
--> AeroElectric-List message posted by: kempthornes <kempthornes@earthlink.net>
(Deere Dynamo on eBay)
At 11:07 AM 11/27/2003 -0600, you wrote:
>--> AeroElectric-List message posted by: "NEMuzzy" <list01@GourmetDamage.com>
> That's the nice
>thing about Lycomings- you can buy everything you need with a credit card!
You must have one hell of a limit!
hal
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: BAKEROCB@aol.com
11/27/2003
Hello Electrical Types, I am again seeking your help. Here is the situation:
I devised a pitch trim system for my airplane that consisted of a MAC trim
servo applying a spring bias force to the elevator push rod through levers and
springs. No tab on the elevator. During flight testing I learned that the MAC
servo was not strong enough (supposed to provide 40 pounds of force) to
properly trim the elevator. It is not possible to change the leverage and still
retain enough trim travel.
What I am seeking is a linear actuator, 12 volt system, 4 to 6 inches of
travel, about 80 to 100 pounds of force or greater.
Perhaps some automobile linear actuator such as from a window or sliding door
for a van may be suitable. I would appreciate any recommendations or comments
that you may have. Thank you.
'OC' Baker, Builder of KIS TR-1 #116 4/14/97 - 11/17/03
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Future replacement for Rotax |
rectifier/regulator ?
--> AeroElectric-List message posted by: jerb <ulflyer@verizon.net> rectifier/regulator
?
He should be making one for the UL 2-stroke Rotaxs - there is a need for a
low heat, low engine loading regulator for these engine. The Keywest good
for 10 amps is a shunt type regulator, regulating the output by shunting
(effectively shorting) the lighting coil. By doing so it cause heat and it
also places a load upon the engine. A switching regular would be the
perfect solution but it would have to tolerate vibration and
shock. Switchers tend to use larger heavy components that don't like
forces or vibration - packaging and component selection would be a key
factor to reliability.
jerb
At 02:07 PM 11/16/03 -0600, you wrote:
>--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
><bob.nuckolls@cox.net> rectifier/regulator ?
>
>At 08:56 PM 11/15/2003 +0100, you wrote:
> >--> AeroElectric-List message posted by: "Gilles.Thesee"
> ><Gilles.Thesee@ac-grenoble.fr>
> >
> >Hi Bob and all,
> >
> >This is to let you know that a fellow pilot and electrics researcher is
> >willing to undertake the design of a more modern rectifier/regulator for the
> >Rotax 912/914 PM alternator. He is talking about switching and chopping and
> >low heat.
> >We happily offered to flight test the future design.
> >We just spent the afternoon sorting out the schematics of the present
> >regulator. I passed him a stator and rotor to allow for basic measurements
> >and components dimensioning.
>
> I've considered this approach for years . . . the pot's just too far back
> on the stove to stir. If he'd like to collaborate, I'll offer a sounding
> board for ideas and hawk the product for him here on the AEC site if
> the result is suitably impressive.
>
> Bob . . .
>
>
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pitch Trim Help |
--> AeroElectric-List message posted by: "Ronald J. Parigoris" <rparigor@suffolk.lib.ny.us>
Hello BAKEROCB@aol.com wrote:
A few thoughts:
I took a look inside my Ray Allen T4-5 servo that is smaller than you want, but
it
just has a gear that screws on a brass threaded rod. I think just a small amount
of
innovation could give you a length of rod what you would like, you would need to
install end stops.
Other ideas take a look at model sailboat servos, also model plane landing gear
servos for huge scale,
look at Hitec RCDs site:
http://www.hitecrcd.com/product_fs.htm
Take a look at servo city, especial sprockets and gears:
http://www.servocity.com/ServoCity/Products/Sprockets__Gears__Chain/sprockets__gears__chain.html
and gearboxes
http://www.servocity.com/ServoCity/Products/Servo_Power_Gearboxes/servo_power_gearboxes.html
fool around at both sites, you may find something you could use
Winding a cable or chain, either like a copier or garage door opener?
You could check out one of my favorite companies of all time mcmaster carr
www.mcmaster.com
They sell to public with a credit card. open 24 hours a day.
Check out Inline electromechanical Actuators, electromechanical actuators,
Often if you see something close, it can put you on track. you can get quotes from
McMaster on stuff you want. For instance if they offer the exact you are looking
for, but in 24 volts, ask for a quote on a 12 volt unit. Often the quote will come
back with MFGs name, so you can further investigate.
Good Luck
Ron Parigoris
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pitch Trim Help |
--> AeroElectric-List message posted by: "Matt Prather" <mprather@spro.net>
How about a 12 volt electric drill motor? Alex Strong
makes a pitch trim system for canard airplanes that use
this type of motor. Drills that use these motors are
available at Harbor Freight for less than $20. You will
have to work out a control scheme.
Have a look at: http://strongpitchtrim.com/
I don't know what kind of torque spec these would meet.
Regards,
Matt-
N34RD
> --> AeroElectric-List message posted by: BAKEROCB@aol.com
>
> 11/27/2003
>
> Hello Electrical Types, I am again seeking your help. Here is the
> situation:
>
> I devised a pitch trim system for my airplane that consisted of a MAC
> trim servo applying a spring bias force to the elevator push rod
> through levers and springs. No tab on the elevator. During flight
> testing I learned that the MAC servo was not strong enough (supposed to
> provide 40 pounds of force) to properly trim the elevator. It is not
> possible to change the leverage and still retain enough trim travel.
>
> What I am seeking is a linear actuator, 12 volt system, 4 to 6 inches of
> travel, about 80 to 100 pounds of force or greater.
>
> Perhaps some automobile linear actuator such as from a window or sliding
> door for a van may be suitable. I would appreciate any recommendations
> or comments that you may have. Thank you.
>
> 'OC' Baker, Builder of KIS TR-1 #116 4/14/97 - 11/17/03
>
>
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE: Pitch Trim Help |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
Subject: From: BAKEROCB@aol.com
>During flight testing I learned that the MAC
>servo was not strong enough (supposed to provide 40 pounds of force) to
>properly trim the elevator. It is not possible to change the leverage and
still
>retain enough trim travel.
>What I am seeking is a linear actuator, 12 volt system, 4 to 6 inches of
>travel, about 80 to 100 pounds of force or greater.
"OC"--- get a $1 flea market battery-powered drill or screwdriver that has a
dead battery and operates on something around 12V. Tear it apart. Use the
inside module to drive a fine pitched screw, ball screw or whatever.
Eric
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pitch Trim Help |
--> AeroElectric-List message posted by: "Jim V. Wickert" <JimW_btg@compuserve.com>
The units at Harbor frt are not 12volt. You will have to make a DC to DC
converter which is quite simple and is available in a book for Radio Shack.
I also have a source for 12 volt motors with gearboxes mounted on them
that will give you 609 RPM or 120 RPM depending on the speed you need.
They run about $30 with leads and connector.
Jim Wickert
Vision #159
Tel 920-467-0219
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Infernal congestion engines |
--> AeroElectric-List message posted by: George Braly <gwbraly@gami.com>
"When you can measure it,
you know something about it."
Bob,
We use the full quote as a pace breaker during seminars.
But we list the author as Billy Thomson.
Then give away a T-shirt to anybody who can come up with Lord Kelvin.
We measure peak torsionals that are about 3x the mean torque. Actually +-
3x the mean torque.
The diesel engines are closer to 5x.
This means that if you want to put a diesel in your 172, you need to
re-evaluate the engine mounts, since they were never designed for those
kinds of reaction loads.
George
Message 19
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> AeroElectric-List message posted by: "David Chalmers" <David@ChalmersFamily.com>
Check out Electrak linear actuators http://www.powerdrives.com/electrak/
I used one of these for my airbrake actuator. Used to be made by Warner Electric
but seem to be sold by Danaher now. Electrak 1 go up to 75 pounds. Eletrak 2
go to 250 pounds. I have an Electrak 1 S12-17A8-02 (12V, 4" throw, 75 pound load)
that I don't need if you're interested.
Dave
-----Original Message-----
From: BAKEROCB@aol.com [mailto:BAKEROCB@aol.com]
Subject: AeroElectric-List: Pitch Trim Help
--> AeroElectric-List message posted by: BAKEROCB@aol.com
11/27/2003
Hello Electrical Types, I am again seeking your help. Here is the situation:
I devised a pitch trim system for my airplane that consisted of a MAC trim
servo applying a spring bias force to the elevator push rod through levers and
springs. No tab on the elevator. During flight testing I learned that the MAC
servo was not strong enough (supposed to provide 40 pounds of force) to
properly trim the elevator. It is not possible to change the leverage and still
retain enough trim travel.
What I am seeking is a linear actuator, 12 volt system, 4 to 6 inches of
travel, about 80 to 100 pounds of force or greater.
Perhaps some automobile linear actuator such as from a window or sliding door
for a van may be suitable. I would appreciate any recommendations or comments
that you may have. Thank you.
'OC' Baker, Builder of KIS TR-1 #116 4/14/97 - 11/17/03
Message 20
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pitch Trim Help |
--> AeroElectric-List message posted by: Dave Morris <dave@davemorris.com>
Have you tried the Strong pitch trim servo?
http://www.strongpitchtrim.com/ I believe it is rated at 40 lbs.
Wait a minute... if you're putting 80 to 100 lbs of force on that thing,
how are you planning to override it? And what kind of plane requires 80 to
100 lbs of force to operate the elevators anyway?
Dave Morris
At 06:40 PM 11/27/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: BAKEROCB@aol.com
>
>11/27/2003
>
>Hello Electrical Types, I am again seeking your help. Here is the situation:
>
>I devised a pitch trim system for my airplane that consisted of a MAC trim
>servo applying a spring bias force to the elevator push rod through levers
>and
>springs. No tab on the elevator. During flight testing I learned that the MAC
>servo was not strong enough (supposed to provide 40 pounds of force) to
>properly trim the elevator. It is not possible to change the leverage and
>still
>retain enough trim travel.
>
>What I am seeking is a linear actuator, 12 volt system, 4 to 6 inches of
>travel, about 80 to 100 pounds of force or greater.
>
>Perhaps some automobile linear actuator such as from a window or sliding door
>for a van may be suitable. I would appreciate any recommendations or comments
>that you may have. Thank you.
>
>'OC' Baker, Builder of KIS TR-1 #116 4/14/97 - 11/17/03
>
>
Message 21
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LED questions |
--> AeroElectric-List message posted by: Fiveonepw@aol.com
Thanks for your interest- here are the files, but be patient as they are a
bit obese and if you are dial-up (like me, dammit!!) will take a bit of d-load
time. I'm going to try to send them one at a time as I'd rather not bore you
with the indignity of unzipping stuff that my new freakin' AOL account
requires!!! First will be the two ACAD drawings, 6a is the annunciator circuit
drawing, 6b is the board layout- I just took all the wires out to a 15 pin d-sub
on
a pigtail about 5 inches long. Next will be a couple of fotos of the board
that are rather large to show detail. If you have any questions, you know where
to find me!
From The PossumWorks in TN
Mark
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|