Corrosion is by far the biggest challenge in this project apart from financing. Brushed off the corrosion on the RH side and the forward bulkhead and repainted with 2k primer. Once the forward bulkhead is complete I can reinstall insulation and air conditioning ducts and basically start wiring things up. Found a German coin from […]
Tag Archives: B707
Meter Altimeter finished. Initially I tried a 1/10 geared stepper motor but that turned out to be too slow for any kind of quick descents. So I had to split the needles in two using one stepper motor per needle. Works perfectly. The QNH is set in the gauge itself not via a potentiometer. The […]
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 […]