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Author Topic: Real Collins ADI possible to interface?  (Read 572 times)

Offline 727s4ever!

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Real Collins ADI possible to interface?
« on: September 29, 2018, 05:28:07 PM »
Hi everyone!  So, I'm trying to decide if I should interface real instruments for my 727 build or just go with monitors behind the MIP.  Has anyone been successful in interfacing a Collins ADI such as is found here?

If this is possible then I am leaning toward this as I really love the old steam gauges!! Thanks!

Blue skies, smooth rides-

Offline KyleH

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Re: Real Collins ADI possible to interface?
« Reply #1 on: September 29, 2018, 08:01:09 PM »
Hi Woody,

You need to talk to Rob Archer (727737Nut). He built a 737-300 with real gauges and x-plane.

Offline mickc

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Re: Real Collins ADI possible to interface?
« Reply #2 on: September 30, 2018, 08:00:31 AM »
Definitely doable, and as Kyle said: Rob A is the resident expert for the older steam stuff.

I will say that you can pick one of those up much cheaper than the one you posted, so do a bit of shopping around. 
There are also some great Facebook groups for used instruments and cockpit parts, its amazing what shows up in them from time to time !

Offline _alioth_

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Re: Real Collins ADI possible to interface?
« Reply #3 on: October 01, 2018, 12:29:31 PM »


There are two ways to achieve it:

- ARINC cards to comunicate to instrument. So you don't need to modify them. I know nothing about this, but I think is expensive, and not very easy.

- Mod the instrument, and interface it with arduino/teensy... or similar. Cheaper, but not very easy neither. And you will kill the original gauge state, so only for people whose religion allows it .
I have fully interfaced a real bendix king HSI 525a + slave switch ka51b, and an RMI in this way. Now I am interfacing a real collins hsi 331a. You have to play with synchros (or change them with absolute encoders), d'arsonvals, pots, dc motors.. etc  Each gauge is like a new adventure. You don't need a lot of money, but you really need some skills and A LOT of time.


Offline blueskydriver

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Re: Real Collins ADI possible to interface?
« Reply #4 on: October 01, 2018, 01:13:26 PM »
Or, just have guys like Arturo vacation at your house for a week or two and do the gauge for you! And Woody, since you're a pilot, could you get discount airline tickets? Plus, I am sure he would love a free trip to the USA!!!  :idiot

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Offline jeffreyk

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Offline 727s4ever!

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Re: Real Collins ADI possible to interface?
« Reply #6 on: October 02, 2018, 01:41:03 AM »
Thanks for all the replies!  I posted that eBay listing just as a reference for the type of ADI that I was interested in using.  Thankfully, I was able to find one much cheaper!  It is good to know that it is possible, so I think I will go the steam gauge route!  Of course I know this will mean added expense, time and complication to the project but I really want to see those old instruments working again.  That is just too cool!

Blue skies, smooth rides-


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