Tech assistance neede for remote magnetic compass

[highflyer]

Steven M. Cantrell wrote:
>
> All,
>
> First, sorry for the cross post. This is a shot in the dark to get
> the info I need to be able to use this unit.
> 2nd: Aircraft installation is classed as experimental
> 3d: Item in question is a General Electric Remote Indicating
> Magnetic compass
> Stock No. R88-T-1950-50
> Model #: 8K12AA sub: 2
> Vendor sticker id is Aircraft Instrument & Development,
> Inc. Wichita, KS
>
> Challenge: I need the pin outs for this unit.
>
> History: I completely remade my instrument panel when I put the
> turbine into my BD-5. One of the instruments in the panel was a
> remote compass head. I never could find the sending unit. This
> weekend as I was preparing the starboard wing for the paint shop, I
> pulled off a heretofore unexamined access panel in the top of the
> wing. Christmas came early. What was thought to be wiring for a home
> grown fuel gauge sending unit, turned out to be the compass sending
> unit.
>
> Now the only problem is getting the correct wiring diagram so I do not
> fry it. The more I think about it, the more I think the original
> builder came up with a great solution. This thing is 8 feet away from
> the nearest serious ferrous metal.
>
> Any assistance in my quest will be greatly appreciated.
> FYI, I do have the 400hz power source that it originally came with.
> --
> Regards,
> Steve
> N9211B BD-5T ********** remove .nospam to reply ********
>

I have always had the best luck by contacting the vendor.

HF

[Gary Watson]

I think you might have what was known as a Magnasyn compass. It uses a Flux Valve - which you found in the typical FV location, an indicator and usually a small power supply to produce 26 VAC 400hz. They work quite well and were a common compass system back in the 50s. I don't know where you are living but these units were very common in Canada as late as the early 80s (assuming it is a Magnasyn). Try some of the avionics or instrument overhaul companies such as BF Goodrich (was Castlebury) in Texas or any other instrument shops that are online. No one in avionics ever throws any manuals away so you could luck in at one of the repair facilities.

If you still don't have any luck Email me and I will check with a couple local shops here in Calgary.

 

Gary Watson

Steven M. Cantrell wrote in message <37388A30...@concentric.net>...

Would if I could.  I think is a rather old company name.  No yellow pages listing in Wichita.  Thanks anyway.

[highflyer]

Steven M. Cantrell wrote:
>
> Would if I could. I think is a rather old company name. No yellow
> pages listing in Wichita. Thanks anyway.
>
>
>
> I have always had the best luck by contacting the vendor.
>
> HF
>
>

Try General Electric.

HF