Kollsman Airspeed Indicator This Airspeed indicator actually came from a B727-100 but since they are identical to the ones installed on Lufthansa 707s I chose this one and painted the 410 kts and 420 kts marker black. Both needles are working on this gauge. While the airspeed indicator is simply connected to X-Plane’s IAS data […]
Category Archives: Instruments
Gauges conversions, photos, how I do it and system descriptions
02
Mar
Mar
Turbo Compressor RPM indicator Simple and quick conversion. About 4 hours total time for designing, milling and built. Uses X27 dashboard stepper motor using its internal stop for position reference. System Description The turbo compressor uses energy of engine bleed air (16th stage) to drive a compressor which sucks in outside air, compresses […]
01
Mar
Mar
Trim Indicator This indicator does not need to be converted. This comes from MSN 19521 Air France F-BLCG (my mother was a flight attendant on AF 707s!) that ended its life in Bratislava after a write off. It was repainted in grey but is otherwise untouched. It can easily be interfaced as it is a […]
24
Feb
Feb
Fuel Quantity Gauge 6x The fuel quantity gauges on the 707 are a bit tricky to convert to stepper motors since the have two needles very close together. The main indicator needle turns less than 315° (which is the limit of the Juken X27 motor) and thus does not require a zero position sensor as […]
24
Feb
Feb
Rudder Pressure Gauge conversion Bought a heavily damaged and corroded rudder pressure indicator on eBay and fully refurbished it with new GE328 5V bulbs and a new 2-inch housing. Let the photos speak for themselves. It has the standard Switec X27 stepper motor that uses its internal stop for resets. System description This Indicator […]