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 […]
Category Archives: Instruments
Gauges conversions, photos, how I do it and system descriptions
Finally the four DME indicators are completed & tested. So far I have completed 6 unites of which 2 are being used in the SABENA 707 sim in Brussels which I am helping to build up. I used 3 NEMA 8 stepper motors running at 1/16 steps. Position initialization done via light sensor. A rather […]
Finally started working on the 4x Bendix RMIs. These hat a specially made dial for Lufthansa. Now working on 12V stepper motors with 1/16 microstepping. More infos and video to follow
EPR, N1, EGT and N2 are ready! Tested and found ok. Flap indicators on the right are completed too.
Kollsman Altimeter has been a major challenge. I used a broken spare unit to test a stepper motor on it. The axis for the QNH setting needs to be lengthened to turn a potentiometer. The white flag on the altimeter scale for the KIFIS system can be biased out of view with a fixed voltage. […]