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[Probable Spam] Re: Altimeters

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larry(at)macsmachine.com
Guest

Posted: Tue Jul 22, 2008 8:17 am Post subject: [Probable Spam] Re: Altimeters

Alberto,

The barometrically adjustable sensitive altimeter is a better selection 

as the encoder weighs very little.

Rather than have one component combined taking down both in a 

malfunction, the digital face is

not be a very effective way to convey altitude as changes. Doubt a 

standard repair shop

would be interested in fixing the electronic combined altimeter/encoder.

Being able to set barometric and visualize the altitude in flight is 

important.

http://www.macsmachine.com/images/completion/full/panelatcruise.gif



Only in an Engine Information System or glass instrument set does the 

combining of sensor outputs become economical and

useful, just my personal perspective of course.



Larry McFarland 601HDS at www.macsmachine.com

Iberplanes IGL wrote:

 	  Quote: 	
		   Hello,



 What about this one?



 http://www.aircraftspruce.com/catalog/inpages/tlaltimeter.php

 Altimeter TL-3524 is an altimeter with encoder in one. With the 

 Altimeter, not only you can save weight by having two instruments in 

 one but in addition it is also one of the first encoders that transmit 

 the code immediately after the turn-on. In your Altimeter, you can 

 easily set the height that is to be kept - the instrument will then 

 inform you whether you are above or bellow this set height, the MDA, 

 approach.



 The instrument also informs you on reaching the transition altitude, 

 the height with lack of oxygen etc. Using a PC and the program that is 

 a part of the delivery, the Altimeter also enables you any time to go 

 through the history of measured values.Size: 2-1/4" Not FAA approved. 

 For homebuilt/experimental only.



 Alberto Martin

 www.iberplanes.es <http://www.iberplanes.es>

 Igualada - Barcelona - Spain

Iberplanes

Joined: 10 Dec 2007
Posts: 174
Location: Igualada - Barcelona - Spain

Posted: Tue Jul 22, 2008 10:23 am Post subject: [Probable Spam] Re: Altimeters

Hello Larry, 



Ok, nice tip you gave me. Soon I´ll have to take a decision on avionics. Last Sunday while I was flying our  P96 the Dynon sent a nice message something like "Max temperature Reached" and then it shut down. It was really hot, 37C degrees, I tought the engine was having trouble but the 912ULS was ok, both oil and water on the green arc. The problem was the Dynon......

 

For my XL I like the MGL Oddisey, but now I´m reconsidering my ideas... AMD has a nice cockpit, the "six pack" and Dynon for engine. 



Well, thanks for the tip. 

-- 

Alberto Martin

www.iberplanes.es

 Igualada - Barcelona - Spain



----------------------------------------------

Zodiac 601 XL Builder

Serial: 6-7011



Tail Kit: Finished

Wings: Not Started

Fuselage: Ordered

Engine: Jabiru 3300 

  [quote][b]

_________________
Alberto Martin
601 XL - Jabiru 3300
http://www.iberplanes.es
Igualada - Barcelona - Spain

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Tue Jul 22, 2008 10:47 am Post subject: Re: [Probable Spam] Re: Altimeters

Add a large computer cooling fan behind the panel. You won't have that problem again. The max operating temp is 50C. If it is getting that hot behind your panel then you are probably going to start cooking some other things that aren't as smart as the Dynon.



Another plus to the fan is that if you vent it right it will double as a defogger for the canopy.



 	  Iberplanes wrote: 	
		  Hello Larry, 



Ok, nice tip you gave me. Soon Iï¿½ll have to take a decision on avionics. Last Sunday while I was flying ourï¿½ P96 the Dynon sent a nice message something like "Max temperature Reached" and then it shut down. It was really hot, 37C degrees, I tought the engine was having trouble but the 912ULS was ok, both oil and water on the green arc. The problem was the Dynon......

 

For my XL I like the MGL Oddisey, but now Iï¿½m reconsidering my ideas... AMD has a nice cockpit, the "six pack" and Dynon for engine. 



Well, thanks for the tip. 

-- 

Alberto Martin

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

amyvega2005(at)earthlink.
Guest

Posted: Tue Jul 22, 2008 12:35 pm Post subject: [Probable Spam] Re: Altimeters

50 C is over 122 degrees! I run my Dynons at over 100 F all the time.  I would call Dynon and see if they want to check the part out.  It sounds suspect that a product in the cabin coud not take hot temps at 37c, thats not out of its element.



Juan



--

psm(at)att.net
Guest

Posted: Tue Jul 22, 2008 1:53 pm Post subject: [Probable Spam] Re: Altimeters

Hi Juan,



I agree with you that 50 degrees Celsius is very hot.  If the cabin 

temperature was 37 C then it is not hard to believe it was over 50 C 

inside the Dynon box.  I have never worked on electronics designed to 

work over 50 degrees C.  The actual components are only rated to a 

maximum of 70 C unless you select military grade components which 

cost a lot more than the commercial ones.  The difference between the 

50 degree specification and the 70 degree one for the chips is the 

designer's margin.  This is similar to the extra strength a 

mechanical or aeronautical engineer builds into his design.



Perhaps a fan to keep the back of the instrument panel cool is a good 

idea.  Even some vents in the top of the area in front of the 

instrument panel would be helpful from convection cooling.



Paul

XL getting close (recovering electrical engineer)

do not archive

At 01:31 PM 7/22/2008, you wrote:



 	  Quote: 	
		  50 C is over 122 degrees! I run my Dynons at over 100 F all the 

time.  I would call Dynon and see if they want to check the part 

out.  It sounds suspect that a product in the cabin coud not take 

hot temps at 37c, thats not out of its element.



Juan

larry(at)macsmachine.com
Guest

Posted: Tue Jul 22, 2008 4:37 pm Post subject: [Probable Spam] Re: Altimeters

Bill,

If you're going for the installation of an encoder and transponder, 

which I'd recommend the sensitive for sure.  Hitting pattern altitude 

and getting accurate feedback on altitude for maintaining separation of 

easterly and westerly headed aircraft is very important.  If you've a 

class C airport to land or take off from or traverse near you, it's 

especially important that you have the best altimeter and the cost is 

much less a consideration than complying with the controllers 

directives.  They seem to be writing violations as often as opportunity 

permits these days.  The nice thing, sensitive altimeters are not prone 

to malfunction as other types, so I'd go with the barometric-adjustable, 

sensitive type. 

If I were flying a much slower climbing ultra-light aircraft, the 

non-sensitive altimeter would be just the ticket, but not for a 601.



Larry McFarland 601HDS at www.macsmachine.com



Bill Naumuk wrote:

 	  Quote: 	
		   Bryan-

     This is probably the best description of the difference posted. I 

 assume (And this is a big assumption) that the readings within the 

 sweep of the one hand are as accurate as those of the "Sensitive" alts.

     If my assumption is correct, since this is intended to be a backup 

 instrument to the D-100 I'll be OK. I'm a relative flat-lander and 

 have only busted 6-7K feet in a rental in Colorado.

     Everyone, do your best to dissuade me- open season.

     Doesn't matter, I have to work on the house anyway. Check this out:

     Contracted a guy to put siding on the front of the house. Gave him 

 an idea of what needed to be done and a rough estimate of the time it 

 would take. He left, then half hour later came back and said he 

 couldn't work under a homeowner's time estimate and no quoted. This is 

 after the materials had already been ordered.

     I estimated the worst portion of the job would take 2 hrs. After 

 he no-quoted I was so pissed I went out and did it myself in 22 minutes.

     And people wonder why it's taken me so long to complete my project!!!!

                                                                     Bill

Iberplanes

Joined: 10 Dec 2007
Posts: 174
Location: Igualada - Barcelona - Spain

Posted: Tue Jul 22, 2008 10:18 pm Post subject: [Probable Spam] Re: Altimeters

Please Juan, if you have an email, just send it to me so I can contact them

_________________
Alberto Martin
601 XL - Jabiru 3300
http://www.iberplanes.es
Igualada - Barcelona - Spain

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Wed Jul 23, 2008 5:42 am Post subject: Re: [Probable Spam] Re: Altimeters

http://dynonavionics.com/docs/company_contact.html



There's the link to their contact page with phone number, e-mail and snail mail addresses. There is also a link on that page for their support forum which has lots of info and they do respond quickly.



If you don't get a quick response please keep in mind that this is the week before Oshkosh and if they are like other homebuilt vendors they have most if not all of their staff getting ready for that.

 	  Iberplanes wrote: 	
		  Please Juan, if you have an email, just send it to me so I can contact them

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

amyvega2005(at)earthlink.
Guest

Posted: Wed Jul 23, 2008 6:19 am Post subject: [Probable Spam] Re: Altimeters

i understand your position but diagree with  it. The instruments in the cabin should not at that way.  I fly pretty much every day in 601.  IN 100 deg weather. the dynons don't do that.  MOst planes I fly down here have galss panels and they are tied down outside. they dont do that.  Good Idea for the fan perhaps, but its cheaper to call the manufacturer and find out if that is normal course of businesws for the equipment.  Option two is get better ventilation and shade in the cabin while being stored.



Juan



--

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Wed Jul 23, 2008 6:56 am Post subject: Re: [Probable Spam] Re: Altimeters

I tried to save you the call. The specs on the Dynon show a max operating temp of 50 C. That is from the manual which is available at their website. I would certainly hope that Dynon included auto off in the system. The alternative is for the thing to burn itself up.



 	  amyvega2005(at)earthlink. wrote: 	
		  i understand your position but diagree with  it. The instruments in the cabin should not at that way.  I fly pretty much every day in 601.  IN 100 deg weather. the dynons don't do that.  MOst planes I fly down here have galss panels and they are tied down outside. they dont do that.  Good Idea for the fan perhaps, but its cheaper to call the manufacturer and find out if that is normal course of businesws for the equipment.  Option two is get better ventilation and shade in the cabin while being stored.



Juan



--

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

amyvega2005(at)earthlink.
Guest

Posted: Wed Jul 23, 2008 7:27 pm Post subject: [Probable Spam] Re: Altimeters

Gig,

Agreed.  Hey dude, I checked out your website and the progress of your project.  Nice PLane!  I like your IFR template for the COckpit Panel.  I actually miss building now.  It was fun to have something to do after putting the kid and wife to bed.   Hope you are enjoying the project.  

Cheers,  Juan



--

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