Vertical Speed Indicator – plain an simple. Original drums and gears removed and replaced with a NEMA stepper motor and a IR sensor for initialization. NEMA is running at 1/16 steps for super smooth and quick needle movements. Stay tuned for upcoming videos of the gauge conversion.
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. Wh
Work in progress to list the history of all B707 operated by Lufthansa from 1960-1985. Click here: Lufthansa 707 Fleet.
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.
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
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
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.
Discovered the nose section of former BOAC 707 in NJ. Click here for photos.
