Today's Message Index:
----------------------
1. 04:23 AM - Re: EngineSaver - does it work? (wskimike)
2. 04:23 AM - Re: Best way to cut .040 stock (Chuck Jensen)
3. 07:30 AM - Re: RV-4 Center Radio Console (Robin Marks)
4. 08:01 AM - Re: EZ Pilot Autopilot (Charlie Kuss)
5. 08:45 AM - Re: EZ Pilot Autopilot (Sam Buchanan)
6. 10:15 AM - Re: EZ Pilot Autopilot (Steve Sampson)
7. 10:56 AM - Re: RV-4 Center Radio Console (tomvelvick)
8. 11:12 AM - Re: EZ Pilot Autopilot (Jeff Dowling)
9. 11:21 AM - Re: EZ Pilot Autopilot (sportav8r@aol.com)
10. 11:32 AM - Re: EZ Pilot Autopilot (linn walters)
11. 12:03 PM - Re: EZ Pilot Autopilot (Sam Buchanan)
12. 12:32 PM - Re: EZ Pilot Autopilot (Steve Sampson)
13. 12:37 PM - Re: EZ Pilot Autopilot (Paul Trotter)
14. 12:41 PM - Re: EZ Pilot Autopilot (Dan Beadle)
15. 12:47 PM - Re: EZ Pilot Autopilot (linn walters)
16. 01:14 PM - Re: EZ Pilot Autopilot (Doug Gray)
17. 02:43 PM - Re: EZ Pilot Autopilot (Sam Buchanan)
18. 04:16 PM - Re: EZ Pilot Autopilot (Mannan J. Thomason)
19. 04:36 PM - Re: RV-4 Center Radio Console (Paul Besing)
20. 04:50 PM - need some advice here, guys- alternator for RV (sportav8r@aol.com)
21. 05:04 PM - Pratice Kit ,, great tool (Dan)
22. 05:29 PM - Re: Pratice Kit ,, great tool (Frank Stringham)
23. 07:15 PM - >Re:need some advice here,guys-alternator for RV (Oldsfolks@aol.com)
Message 1
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| Subject: | Re: EngineSaver - does it work? |
--> RV-List message posted by: "wskimike" <wskimike@mchsi.com>
What about the cylinder that is on the compression stroke? It would not get
any dry air and would still be susceptible to condensation from the heating
and cooling effect unless the engine was in a temp controlled environment.
It seems the engine would still have to be rotated every so often. IMHO.
Dan, How's the knee?
Mike
----- Original Message -----
From: "Dan Krueger" <pndkrueg@mchsi.com>
Sent: Thursday, January 12, 2006 2:20 PM
Subject: RV-List: EngineSaver - does it work?
> --> RV-List message posted by: Dan Krueger <pndkrueg@mchsi.com>
>
> Aircraft Components sells a device that pumps low pressure dry air into
> the engine block for the purpose of inhibiting rust during long periods
> of storage.
> Details can be found at: http://www.flyingsafer.com/2039.htm
> I am wondering if it really works.
>
> Thank you for your comments and opinions,
> Dan Krueger
> RV6A Flying
>
>
>
Message 2
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| Subject: | Best way to cut .040 stock |
--> RV-List message posted by: "Chuck Jensen" <cjensen@dts9000.com>
Yes, you learned wrong. You learned back in the old days when hand
craftsmanship was more highly valued than the work of some financial
broker that is intent on doing his job to make you broker. Of course,
that hand work was why it took 10 years to build a 3 year plane.
Chuck Jensen
Do Not Archive
--> RV-List message posted by: "Bob Collins" <bcollinsrv7a@comcast.net>
> >Snips are not precise enough for stock this thick.
Hmmm.. The way I learned about cutting was to drill the corners and use
the
snips and cut it 1/8" off the actual line of the desired piece and then
file
and Scotchbrite it down to its final shape and dimension.
Did I learn wrong?
Do not archive
Message 3
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| Subject: | RV-4 Center Radio Console |
--> RV-List message posted by: "Robin Marks" <robin@mrmoisture.com>
Easy, http://www.airgizmos.com/
Robin
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Paul Besing
Sent: Friday, January 13, 2006 9:57 PM
Subject: RE: RV-List: RV-4 Center Radio Console
--> RV-List message posted by: Paul Besing <pbesing@yahoo.com>
Thanks, Robin. How did you mount your Garmin? Looks
like it's the detachable mount. Is it removable?
--- Robin Marks <robin@mrmoisture.com> wrote:
> --> RV-List message posted by: "Robin Marks"
> <robin@mrmoisture.com>
>
> Paul,
>
> http://www.painttheweb.com/rv-4/cockpit.htm
>
> As a non-builder I added a center console to my -4
> and it made for a
> cleaner panel giving me a place for a Nav.com,
> transponder and GPS. I
> also added two lower surfaces for four additional
> engine gauges. It was
> a simple addition with little downside. IMHO.
> Above is a link with detailed photos.
>
> Robin
> RV-4 Sold
> RV-6A 250 hours
>
>
>
>
>
>
> browse
> Subscriptions page,
> FAQ,
>
> Admin.
>
>
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
Sam,
You you explain to me what a "stepper" motor is and how it differs?
Charlie Kuss
snipped
>The TruTrak servo is indeed a nice looking and hefty unit. It uses a
>stepping motor instead of a linear motor and clutch. However, I have
>heard that a new version of this servo is in the works that has a clutch.
>
>The Navaid servo is much lighter than the TruTrak and based on analog
>technology that has been around for many years. In spite of its dated
>appearance and light weight, the servo has an excellent field history in
>service with both Navaid control heads and more recently with the
>EZ-Pilot heads. This servo incorporates a clutch that releases the gear
>train when power is removed from the servo.
snipped
Message 5
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: Sam Buchanan <sbuc@hiwaay.net>
Charlie Kuss wrote:
> --> RV-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
>
> Sam,
> You you explain to me what a "stepper" motor is and how it differs?
Charlie, you are asking the wrong person for insight on the design of
stepping motors! This is beyond my scope of expertise. :-)
Here is a link that might help:
http://www.cs.uiowa.edu/~jones/step
As I understand it, the stepping motor can be controlled via digital
signals in order to command very precise and repeatable rotation and
parking positions of the motor shaft. The analog motor that most of us
are familiar with doesn't have discrete "stops" in its rotation and
needs some sort of feedback sensor in order for the control head to
determine the position of the motor shaft.
There, I have made an idiot of myself by diving into an area in which I
have no real knowledge. But hopefully some of the actual motor experts
on the list will jump in and straighten out my mess. :-)
In the real world, I can't tell any difference in the performance of the
analog system in the Navaid servo and the digital stepper in the AlTrak
servo. Both servos work extremely well at driving the control surfaces
in very small, precise increments.
The first time you move the stick on the ground in a plane with the
DigiTrak servo you will notice the servo motor dragging through the
steps since it doesn't have a clutch that disconnects the servo drive
when it isn't engaged. But the drag isn't noticeable in flight. The
Navaid servo has a solenoid that disengages the gear train when power is
not supplied to the servo.
Hope I haven't muddied the water too much. :-)
Sam Buchanan
Message 6
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: "Steve Sampson" <SSampson.SLN21@london.edu>
Sam - thanks for the input. Any idea when Tru track bring out their new
servo. I havnt bought them yet and hate to buy just before things become the
'old' model. Thanks, Steve.
----- Original Message -----
From: "Sam Buchanan" <sbuc@hiwaay.net>
Sent: Friday, January 13, 2006 7:31 PM
Subject: Re: RV-List: EZ Pilot Autopilot
> --> RV-List message posted by: Sam Buchanan <sbuc@hiwaay.net>
>
> Steve Sampson wrote:
>> --> RV-List message posted by: "Steve Sampson"
>> <SSampson.SLN21@london.edu>
>>
>> I have followed this thread with interest.
>>
>> The one thought I have is of the three units discussed (Tru track / Ezi /
>> Navaid) the true track servos look to be of a much better quality. I have
>> only handled the Navaid servo, which from pictures looks as though it is
>> common to the Ezi. It always appeared not too robust.
>>
>> Anyone care to comment?
>>
>> Thanks, Steve.
>>
>> PS Do these companies make these servos themselves?.
>
> The TruTrak servo is indeed a nice looking and hefty unit. It uses a
> stepping motor instead of a linear motor and clutch. However, I have
> heard that a new version of this servo is in the works that has a clutch.
>
> The Navaid servo is much lighter than the TruTrak and based on analog
> technology that has been around for many years. In spite of its dated
> appearance and light weight, the servo has an excellent field history in
> service with both Navaid control heads and more recently with the
> EZ-Pilot heads. This servo incorporates a clutch that releases the gear
> train when power is removed from the servo.
>
> Trio is shipping their new servo with their altitude hold devices and it
> is a dandy both mechanically and electronically. This state-of-the-art
> servo is the only one that includes an accelerometer *in the servo* that
> is an integral part of the fail-safe system. The servo and control head
> constantly poll each other, and if an argument can't be settled, the
> system releases the servo. If the servo independently sees a high G load
> from its built-in accelerometer, it will deactivate. As far as I know,
> this is the only system that provides the servo with enough brains to
> independently disconnect in an emergency without being commanded by the
> control head. I suspect this new servo will eventually find its way into
> the entire Trio product line.
>
> Hope this info helps with understanding the various options. With the
> exception of the Navaid servo used on the EZ-Pilot and the Navaid
> version of the DigiTrak, as far as I know the other servos are produced
> by the respective companies. I am not an employee of any autopilot
> company, just a very interested bystander and customer of both Trio and
> TruTrak.
>
> Sam Buchanan
>
>
> ______________________________________________________________________
>
> This email has been scanned by the MessageLabs Email Security System
> on behalf of the London Business School community.
> For more information please visit http://www.messagelabs.com/email
> ______________________________________________________________________
>
>
> --
> 12/01/2006
>
>
Message 7
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| Subject: | Re: RV-4 Center Radio Console |
--> RV-List message posted by: "tomvelvick" <tomvelvick@cox.net>
Hi Paul,
I removed the center console from Katies RV-4 and made a new subpanel below the
main panel instead. Sure a lot happier with new setup. If you want the old
center console, you can have it and you may be able modify it to work for you
and save you some time. We relocated the battery to the firewall and are going
to use the center console area as a storage space.
There is also a rv-4 center console for sale on ebay right now for $25 opening
bid.
Regards,
Tom Velvick
pbesing(at)yahoo.com wrote:
> I've seen many RV-4's that have a center radio console
> below the instrument panel to save space. Is this
> something in the plans, or is it purely a fab yourself
> kind of mod?
>
> Since panel space in a -4 is premium, I would think
> that many have done this before.
>
> Thanks in advance.
>
> Paul Besing
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=3927#3927
Message 8
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: "Jeff Dowling" <shempdowling2@earthlink.net>
You could purchase the tru track alt hold regardless of your a/p setup. I
have the Navaid and tru traks alt hold and love it. I would put the alt
hold in before the wing leveler. Its really nice when you're by yourself.
GO BEARS
Shemp/Jeff Dowling
RV-6A, N915JD
235 hours
Chicago/Louisville
----- Original Message -----
From: <Vanremog@aol.com>
Sent: Friday, January 13, 2006 11:11 PM
Subject: Re: RV-List: EZ Pilot Autopilot
> --> RV-List message posted by: Vanremog@aol.com
>
>
> In a message dated 1/13/2006 3:11:10 P.M. Pacific Standard Time,
> don.wentz@intel.com writes:
>
> With all this talk about selling of Navaids to buy other autopilots, any
> of you selling the Navaids cheap?
>
> Mine works great (compared to what I had before - nothing ;-) and I have
> a friend with an RV-4 without even a T&B that would advance light years
> with a 'crappy old Navaid' wing leveler.
>
>
> ====================================
>
> I'm down with the Duck Dude on this one. My old vintage '97 Navaid has
> worked fine since day one and, aside from the fact that it doesn't have an
> altitude hold option (the Pig Dude never come thru on this one), I am
> generally
> happy with it.
>
> GV (RV-6A N1GV O-360-A1A, C/S, Flying 771hrs, Silicon Valley, CA)
>
>
>
Message 9
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: sportav8r@aol.com
Both functions are VERY nice to have (I can say that from experience, now that
I have both). For x/c, the alt hold is the most desirable of the two, but for
an inadvertent IMC encounter (not that I've ever had one ;-), the wing-leveler
is more helpful, IMO.
-Stormy
GO, TRIO :-)
do not archive
-----Original Message-----
From: Jeff Dowling <shempdowling2@earthlink.net>
Sent: Sat, 14 Jan 2006 13:11:26 -0600
Subject: Re: RV-List: EZ Pilot Autopilot
--> RV-List message posted by: "Jeff Dowling" <shempdowling2@earthlink.net>
You could purchase the tru track alt hold regardless of your a/p setup. I
have the Navaid and tru traks alt hold and love it. I would put the alt
hold in before the wing leveler. Its really nice when you're by yourself.
GO BEARS
Shemp/Jeff Dowling
RV-6A, N915JD
235 hours
Chicago/Louisville
----- Original Message -----
From: <Vanremog@aol.com>
Sent: Friday, January 13, 2006 11:11 PM
Subject: Re: RV-List: EZ Pilot Autopilot
> --> RV-List message posted by: Vanremog@aol.com
>
>
> In a message dated 1/13/2006 3:11:10 P.M. Pacific Standard Time,
> don.wentz@intel.com writes:
>
> With all this talk about selling of Navaids to buy other autopilots, any
> of you selling the Navaids cheap?
>
> Mine works great (compared to what I had before - nothing ;-) and I have
> a friend with an RV-4 without even a T&B that would advance light years
> with a 'crappy old Navaid' wing leveler.
>
>
> ====================================
>
> I'm down with the Duck Dude on this one. My old vintage '97 Navaid has
> worked fine since day one and, aside from the fact that it doesn't have an
> altitude hold option (the Pig Dude never come thru on this one), I am
> generally
> happy with it.
>
> GV (RV-6A N1GV O-360-A1A, C/S, Flying 771hrs, Silicon Valley, CA)
>
>
>
Message 10
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: linn walters <lwalters2@cfl.rr.com>
Charlie, a stepper motor doesn't 'run' like a linear motor. Apply power
to a linear motor and it runs, and after power removal the motor will
coast to a stop .... depending on the load, of course. A stepper motor
is 'pulsed' (best way I can describe it) and moves a few degrees, or
portions of a degree, depending on it's design, for each pulse. If you
have one of each (stepper and linear) you can tell the difference by
twisting the rotor. A stepper will have a definite 'hump' and stop at
the 'step'. Kinda like pulling a prop over compression. The linear
will just rotate freely. A DC linear motor will have two wires, and the
stepper will have 4 or more depending on how many field coils it has.
Steppers need a 'controller' that generates the pulses in the proper
phase for rotation and direction. The linear motor only needs a switch.
The advantage of the stepper is the ability to move in fine, incremental
steps while the linear motor just comes close to a position.
Hope this helps.
Linn
do not archive
Charlie Kuss wrote:
>--> RV-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
>
>Sam,
> You you explain to me what a "stepper" motor is and how it differs?
>Charlie Kuss
>
>
>snipped
>
>
>>The TruTrak servo is indeed a nice looking and hefty unit. It uses a
>>stepping motor instead of a linear motor and clutch. However, I have
>>heard that a new version of this servo is in the works that has a clutch.
>>
>>The Navaid servo is much lighter than the TruTrak and based on analog
>>technology that has been around for many years. In spite of its dated
>>appearance and light weight, the servo has an excellent field history in
>>service with both Navaid control heads and more recently with the
>>EZ-Pilot heads. This servo incorporates a clutch that releases the gear
>>train when power is removed from the servo.
>>
>>
>snipped
>
>
>
>
>
>
>
>
>
Message 11
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: Sam Buchanan <sbuc@hiwaay.net>
Steve Sampson wrote:
> --> RV-List message posted by: "Steve Sampson" <SSampson.SLN21@london.edu>
>
> Sam - thanks for the input. Any idea when Tru track bring out their new
> servo. I havnt bought them yet and hate to buy just before things become the
> 'old' model. Thanks, Steve.
Steve, sorry I don't know, but I bet a call to TruTrak would provide you
with that and any other info you need. :-)
Sam Buchanan
Message 12
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: "Steve Sampson" <SSampson.SLN21@london.edu>
Thanks!! Steve.
----- Original Message -----
From: "Sam Buchanan" <sbuc@hiwaay.net>
Sent: Saturday, January 14, 2006 8:03 PM
Subject: Re: RV-List: EZ Pilot Autopilot
> --> RV-List message posted by: Sam Buchanan <sbuc@hiwaay.net>
>
> Steve Sampson wrote:
>> --> RV-List message posted by: "Steve Sampson"
>> <SSampson.SLN21@london.edu>
>>
>> Sam - thanks for the input. Any idea when Tru track bring out their new
>> servo. I havnt bought them yet and hate to buy just before things become
>> the
>> 'old' model. Thanks, Steve.
>
>
> Steve, sorry I don't know, but I bet a call to TruTrak would provide you
> with that and any other info you need. :-)
>
> Sam Buchanan
>
>
> ______________________________________________________________________
>
> This email has been scanned by the MessageLabs Email Security System
> on behalf of the London Business School community.
> For more information please visit http://www.messagelabs.com/email
> ______________________________________________________________________
>
>
> --
> 14/01/2006
>
>
Message 13
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: Paul Trotter <ptrotter@acm.org>
Both stepper motors and servo motors have their own advantages and
disadvantages. As Lynn stated, steppers have a definitive, known, rotation
per pulse. This makes them easier and cheaper to control, but has the
disadvantage of jerky motion (probably not an issue for an A/P) and the
fineness of control is limited by the number of steps per revolution (again
probably not an issue for an A/P). Servos have continuous motion and need a
feedback circuit to determine their location. This is more expensive but
give much smoother control and can be positioned in virtually unlimited
fineness as opposed to steps. In the case of an A/P, I think either will
work just fine and the differentiating factor between A/Ps being the
features of the electronics rather than the motor type. Steppers and servos
are use extensively in the CNC industry, with lower end equipment using
steppers and higher end equipment using servos. My little CNC mill has
stepper motors and you can really see the limitations due to the steps. Of
course we are talking thousands of an inch here, which is just not necessary
for an A/P.
I think both Tru-Trak and Trio are great products. Right now I'm planning
on using Trio in my 8, but I could very well change my mind by the time I
get to that point. I like the clutch idea on the Trio servo, but it doesn't
take much effort to override the Tru-Trak stepper. I believe Trio is now
shipping the same servo for both the EZ-Pilot and the EZ-1 altitude hold
units.
Paul Trotter
RV-8 82080 Fuselage Kit
----- Original Message -----
From: "linn walters" <lwalters2@cfl.rr.com>
Sent: Saturday, January 14, 2006 2:34 PM
Subject: Re: RV-List: EZ Pilot Autopilot
> --> RV-List message posted by: linn walters <lwalters2@cfl.rr.com>
>
> Charlie, a stepper motor doesn't 'run' like a linear motor. Apply power
> to a linear motor and it runs, and after power removal the motor will
> coast to a stop .... depending on the load, of course. A stepper motor
> is 'pulsed' (best way I can describe it) and moves a few degrees, or
> portions of a degree, depending on it's design, for each pulse. If you
> have one of each (stepper and linear) you can tell the difference by
> twisting the rotor. A stepper will have a definite 'hump' and stop at
> the 'step'. Kinda like pulling a prop over compression. The linear
> will just rotate freely. A DC linear motor will have two wires, and the
> stepper will have 4 or more depending on how many field coils it has.
> Steppers need a 'controller' that generates the pulses in the proper
> phase for rotation and direction. The linear motor only needs a switch.
>
> The advantage of the stepper is the ability to move in fine, incremental
> steps while the linear motor just comes close to a position.
>
> Hope this helps.
> Linn
>
> do not archive
> Charlie Kuss wrote:
>
>>--> RV-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
>>
>>Sam,
>> You you explain to me what a "stepper" motor is and how it differs?
>>Charlie Kuss
>>
>>
>>snipped
>>
>>
>>>The TruTrak servo is indeed a nice looking and hefty unit. It uses a
>>>stepping motor instead of a linear motor and clutch. However, I have
>>>heard that a new version of this servo is in the works that has a clutch.
>>>
>>>The Navaid servo is much lighter than the TruTrak and based on analog
>>>technology that has been around for many years. In spite of its dated
>>>appearance and light weight, the servo has an excellent field history in
>>>service with both Navaid control heads and more recently with the
>>>EZ-Pilot heads. This servo incorporates a clutch that releases the gear
>>>train when power is removed from the servo.
>>>
>>>
>>snipped
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
Message 14
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| Subject: | EZ Pilot Autopilot |
--> RV-List message posted by: "Dan Beadle" <Dan.Beadle@hq.InclineSoftworks.com>
A stepper motor is computer controlled. They basically have windings
that are offset. When you energize one set, the motor moves a fraction
of a turn in one direction. If you then engage the other set, it
continues to move the same direction for another step. Alternate them,
and the motor turns round and round. If you change the order - the
phase - of powering up the windings, it moves the other direction.
Step motors are the basis for a lot of CNC machines. By counting steps,
you know where the head is. And steps can be very small.
On nice thing about most stepper motors is that if you don't engage
either set of windings, the motor will free wheel. (It takes energy to
hold it on the current step - no energy = free wheel). This is a nice
feature that
eliminates the need for a separate clutch. If
the autopilot is not engaged, just let the motor freewheel.
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Charlie Kuss
Sent: Saturday, January 14, 2006 7:31 AM
Subject: Re: RV-List: EZ Pilot Autopilot
--> RV-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
Sam,
You you explain to me what a "stepper" motor is and how it differs?
Charlie Kuss
snipped
>The TruTrak servo is indeed a nice looking and hefty unit. It uses a
>stepping motor instead of a linear motor and clutch. However, I have
>heard that a new version of this servo is in the works that has a
clutch.
>
>The Navaid servo is much lighter than the TruTrak and based on analog
>technology that has been around for many years. In spite of its dated
>appearance and light weight, the servo has an excellent field history
in
>service with both Navaid control heads and more recently with the
>EZ-Pilot heads. This servo incorporates a clutch that releases the gear
>train when power is removed from the servo.
snipped
Message 15
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: linn walters <lwalters2@cfl.rr.com>
In my response to Charlie, I pointed out a benefit of steppers. The
linear motors also have a benefit, especially in an autopilot. The
stepper has inherent drag, because of the stepping nature of the beast
where the linear motor doesn't. Given the same gearing, the stepper
will have more drag than the linear motor. However, both systems will
have drag due to gearing, and the addition of a clutch in the system
will remove the drag from both.
Sorry if I've confused anyone!!!
Linn
do not archive
--
Message 16
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: Doug Gray <dgra1233@bigpond.net.au>
> I looked inside one of these servos at OSH and the engineering and
> materials look first class; should be a worthy component for their
> excellent autopilots.
>
> Sam Buchanan
>
>
It the new 'Servo' for EZ-Pilot a stepper or a true (analogue) servo?
I had discounted the EZ-Pilot previously because it had a stepper. I could not
get my mind around
how they delt with overtorquing the stepper, I suspect they have needed to resort
to another
micro-controller within their new 'servo' to keep track of the actual position.
Doug Gray
Message 17
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: Sam Buchanan <sbuc@hiwaay.net>
Doug Gray wrote:
> --> RV-List message posted by: Doug Gray <dgra1233@bigpond.net.au>
>
>
>> I looked inside one of these servos at OSH and the engineering and
>> materials look first class; should be a worthy component for their
>> excellent autopilots.
>>
>> Sam Buchanan
>>
>>
> Is the new 'Servo' for EZ-Pilot a stepper or a true (analogue) servo?
I don't know, Doug.
> I had discounted the EZ-Pilot previously because it had a stepper.
Nope, Trio's EZ-Pilot has been using the Navaid servo which is *not* a
stepper setup. TruTrak uses a stepper design with their systems.
> I could not get my mind around how they delt with overtorquing the
> stepper, I suspect they have needed to resort to another
> micro-controller within their new 'servo' to keep track of the actual
> position.
There is *no* way I am going to speculate on the specifics of Trio's new
servo design! :-)
Here is what Trio has on their web site about the new servo:
http://www.trioavionics.com/servo.htm
It appears to be a well thought-out design which is what I have come to
expect from the Trio guys.
Sam Buchanan
Message 18
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| Subject: | Re: EZ Pilot Autopilot |
--> RV-List message posted by: "Mannan J. Thomason" <mannanj@alltel.net>
Steve:
Check with Tru Track to be certain, but I think I remember that they will
let you upgrade to a newer or better version for just the difference in
price between the two.
Mannan Thomason
RV-8 Tru Track installed, hoping to fly this spring.
----- Original Message -----
From: "Steve Sampson" <SSampson.SLN21@london.edu>
Sent: Saturday, January 14, 2006 1:11 PM
Subject: Re: RV-List: EZ Pilot Autopilot
> --> RV-List message posted by: "Steve Sampson" <SSampson.SLN21@london.edu>
>
> Sam - thanks for the input. Any idea when Tru track bring out their new
> servo. I havnt bought them yet and hate to buy just before things become
> the
> 'old' model. Thanks, Steve.
>
Message 19
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| Subject: | RV-4 Center Radio Console |
--> RV-List message posted by: Paul Besing <pbesing@yahoo.com>
Brilliant idea!
--- Robin Marks <robin@mrmoisture.com> wrote:
> --> RV-List message posted by: "Robin Marks"
> <robin@mrmoisture.com>
>
> Easy, http://www.airgizmos.com/
>
> Robin
>
> -----Original Message-----
> From: owner-rv-list-server@matronics.com
> [mailto:owner-rv-list-server@matronics.com] On
> Behalf Of Paul Besing
> Sent: Friday, January 13, 2006 9:57 PM
> To: rv-list@matronics.com
> Subject: RE: RV-List: RV-4 Center Radio Console
>
> --> RV-List message posted by: Paul Besing
> <pbesing@yahoo.com>
>
> Thanks, Robin. How did you mount your Garmin?
> Looks
> like it's the detachable mount. Is it removable?
>
> --- Robin Marks <robin@mrmoisture.com> wrote:
>
> > --> RV-List message posted by: "Robin Marks"
> > <robin@mrmoisture.com>
> >
> > Paul,
> >
> > http://www.painttheweb.com/rv-4/cockpit.htm
> >
> > As a non-builder I added a center console to my -4
> > and it made for a
> > cleaner panel giving me a place for a Nav.com,
> > transponder and GPS. I
> > also added two lower surfaces for four additional
> > engine gauges. It was
> > a simple addition with little downside. IMHO.
> > Above is a link with detailed photos.
> >
> > Robin
> > RV-4 Sold
> > RV-6A 250 hours
> >
> >
> >
> >
> >
> >
> > browse
> > Subscriptions page,
> > FAQ,
> >
> > Admin.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> browse
> Subscriptions page,
> FAQ,
>
> Admin.
>
>
>
>
>
>
>
>
>
>
>
Message 20
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| Subject: | need some advice here, guys- alternator for RV |
--> RV-List message posted by: sportav8r@aol.com
Armed with info gleaned from the AeroElectric list and elsewhere on the web, I
went alternator-shopping at the local auto parts stores today, to see how close
I could get to the recommended 70 A machine that goes by part number Lester
13353 or NipponDenso 121000-346. If I had not had the additional tidbit that
it fits a '93 Dodge Ramcharger 5.2 liter pickup, I think the parts counter clerks
would have been helpless to assist me. The choices that came up "in stock"
were limited to one: the Dodge's optional 90 amp externally-regulated machine
(reman) with a serpentine pulley, in a 125mm case. My quest for a VR-166 Ford
regulator also ended with a substitute, the Sorensen VR-301.
The alternator comes with its own computer-generated test output graph and data
table, indicating it is capable of 126 amps at 6000 rpm, and draws 5.72 amps
of field current at that output. It seems to weigh about 11 lbs on the bathroom
scales. Already I'm thinking this might be more of a fire-breathing machine
than I should bolt to my RV, even if it's a physical fit, which I think it will
be. I'm not sure the electronic regulator will necessarily "handle" it, but
not sure why it wouldn't. I don't need anywhere near the output this alternator
is capable of, and I don't want my 5 amp field breaker nuisance-tripping
because the field happens to want near that amount (no idea how linear the field
current vs output curve might be, so no way to know field current at closer
to 50-60 amps, for example.)
Finally, I'm unsure how easily the V-pulley from my original Van's 35 A machine
will slip onto the shaft of the new alternator. Any takers on that one? When
I make the swap, I'd like to have everything go smoothly with a minimum of downtime.
Basically, I'd like some reassurance that this is worth trying. I can
always take it back and order the Dodge 70 amp alternator; same physical size,
and ironically more money.
Advice appreciated, friends. Thanks.
-Bill Boyd RV-6A O-320 FP
Message 21
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| Subject: | Pratice Kit ,, great tool |
--> RV-List message posted by: Dan <dan@rdan.com>
As I collected my tools and dabbled with the spars on the HS I decide to assemble
the practice kit i had from Van's
Great Tool ! had fun and learned a lot about rivets and driving them ,
The kit came out good but made a few mistakes that I'm glad it was on a practice
kit,,
So I learned a lot ,, and have a cool desk ornament.
Highly recommend any new builder to build one.
Dan
-8 QB
N728RV Reserved
Message 22
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| Subject: | Pratice Kit ,, great tool |
--> RV-List message posted by: "Frank Stringham" <fstringham@hotmail.com>
Hi to all and Dan
I did the same and it real helped develop my skills early in the build
process.
Frank @ SGU and SLC Fuse / Finish RV7A
>From: Dan <dan@rdan.com>
>To: rv-list@matronics.com
>Subject: RV-List: Pratice Kit ,, great tool
>Date: Sat, 14 Jan 2006 17:03:35 -0800 (PST)
>
>--> RV-List message posted by: Dan <dan@rdan.com>
>
>As I collected my tools and dabbled with the spars on the HS I decide to
>assemble the practice kit i had from Van's
> Great Tool ! had fun and learned a lot about rivets and driving them ,
> The kit came out good but made a few mistakes that I'm glad it was on a
>practice kit,,
> So I learned a lot ,, and have a cool desk ornament.
> Highly recommend any new builder to build one.
> Dan
> -8 QB
> N728RV Reserved
>
>
Message 23
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| Subject: | Re: >Re:need some advice here,guys-alternator for RV |
--> RV-List message posted by: Oldsfolks@aol.com
What in the world are you hauling in your RV ???? If you have an arc
welder,then you might need that many amps !!! otherwise come down to earth and
get a proper sized alternator. I can't imagine anyone needing more than 45 amp
output in an RV.
If others can show that more is needed,then do so.
I have flown with radios,xpndr,strobe/nav lights and 130 watt landing lights
on and didn't need more than 35 amps,which my alternaror puts out.
I use a Toyota alternator with 4" pulley.
Bob Olds RV-4 , N1191X
A&P , EAA Tech. Counselor
Charleston,Arkansas
Real Aviators Fly Taildraggers
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