Because of the short brush life (5 flights) experienced with the ferrite car motors, I decided to upgrade to Astro 035s. I kept the Graupner 10"x 7" three bladed propellers and the MEC gearboxes. The gear ratio was changed from 4.29:1 to 3.33:1 by switching to 18 tooth pinions.

The carburettor air scoops were added at the same time and should hopefully direct more cooling air onto the brushgear.

While working on the nacelles, I decided to make some dummy engines and paint the propellers.

Click on the pictures to enlarge.