korry switches.

[David Withers]

i have all real korries for a 737 mip. i also have fds k1's on hand.

seems like a pain in the *** the wire the real ones at 28 volts etc.

i could change the bulbs over in the master caution/fire pushbuttons on the glare from 28v to something low if poss so my phidgets or sys cards can light them up. that would solve one thing.

let me get this right....i could use phidgets to run the korries, but phidgets would only be used to open a switch for higher voltage to actually run the lights.

nice to have the real stuff....but what a drama.

second question....how does one remove them from the metal mip without damage given that they are sort of pressed in and have a little lip holding them in? i might have to sell them.

anyone played with these?

[Michael Carter]

All of my indicators a Korry. Pull out the light cap and use an Allen head or hex head key to unscrew the base of the assembly. DO NOT remove it!

It will come apart in three pieces. The front and rear halves and the mount.

Be sure you reassemble correctly and get the correct side up. The light cap only fits one way.

Write more when I get home.

[Michael Carter]

You could replace all of the Korry 387 bulbs with 7333's operating at 5VDC, but they are almost double the price of the 387's. $0.42 compared to $0.97 each.

They also draw 60ma each; 20ma more than the 387 at 28VDC. There is no replacement LED for the Korry indicator that is under 12VDC, and those are almost $4 a pop.

If you're going to play with real aircraft equipment, you'll have to make some choices about where to spend your money. Hmmm, bulbs or 24/28 VDC power supply? Power supplies are dirt cheap compared to replacing every bulb in every Korry indicator in your cockpit.

I've been down this road more than a few miles.

FDT and OC cards can use external supplies to illuminate these indicators. I do not know anything about Phidgets. Relays can be used, but that's a lot of relays for a 737 cockpit. More than 130 Korry's aboard.

[David Withers]

think ill flog em if i can get em out.

thanks for the help mike. love that seven twenty seven mate, as a kid i loved those babies...the noise the shape, that high tee shaped tail, just...everything.

727 is the glory days of airline travel i reckon. you had to dress up, the food was awesome, the hosties were hot, you got treated like a king.

now..backpackers with dreadlocks wear their pijamas on the flight, the food is shite, the hosties are canteen ladies and if you dont play their game they treat you like dirt.

oh well.

[Michael Carter]

I remember all of that too. Pity it's not the same today, I miss it. Airports today look more like a downtown Greyhound bus station.

[David Withers]

was just reading that the 16/16 cards i have can control up to 30v and 2 amps.

it seems the digital output just acts as a switch to ground.

so...each little connection on the board is just a switch (sorta relay thingy)

[Michael Carter]

Depending upon which Korry Boeing used in the 737, the pins you want to use are #1 & #3. But, the wiring diagram is right on the housing.

[Efe Cem Elci]

This might help.

[David Withers]

thanks heaps guys.

[David Withers]

so...run with the 24 volts then psu?...for added bulb life etc?