Bendix RMIs

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


Removing insulation

After some considerations I decided to remove the entire insulation for better access to the airframe. This makes it easier to remove remaining wires, tubes and other unnecessary equipment. I am still missing the footrest brackets, panel brackets and panel hinges which I will have to re manufacture.


Cleaning cleaning cleaning….

D-ABUD/N707QJ is undergoing a thorough cleaning and removal of insulation, wiring and unnecessary tubes. Kitchen cleaner is probably the best cleaning product to use for this job. Note the large amounts of nicotine which were not that easy to remove and required some extensive rubbing.

Cockpit restoration update

Control coloums removed, Foot rest removed, wirring removed, Panel brackets removed, cockpit floor wire duct removed.

Engine panel nearing completion

EPR, N1, EGT and N2 are ready! Tested and found ok. Flap indicators on the right are completed too.

Kollsman Drum-Type Altimeter

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

Engine Oil Quantity indicators

OILY QTY gauges of N88ZL now to be used in the panels of D-ABUD. Now running a 5V stepper motor and the original 5V integral lightning. Look how few components are now involved! Once done correctly I doubt you will ever have to reopen the gauge except for the bulb

EGT indicators

Finished the EGT indicators. These were U/S units from ebay (one is from N88ZL) and have been converted to Switec stepper motors for cost/accuracy/maintenance/reliability reasons.

I decided against switching the original lightning to LED to keep the original look at night. Bulbs are cheap and easy to replace and have