Today I took delivery of the Boeing 707 cockpit I have been dreaming of for many many years. This former Saudi Arabian Airlines 707 (HZ-ACI) will become Lufthansa’s B707 D-ABUD/UF (N88ZL) with all panels, most gauges and other parts coming from these two aircraft. My father did his entire 707
N1 and N2 indicator are basically exactly the same in terms of construction. The major problem here is the vernier dial and the speed at which it is rotating during engine acceleration. Here is an engine spool up table. It shows that the engine can spool up above 50% at
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.
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.
The turbo compressor uses energy of engine bleed air (16th stage) to drive a compressor which