View Single Post
Old Nov 19, 2010, 01:07 PM
Herb is offline
Find More Posts by Herb
Lithium Member
Herb's Avatar
Irvine, Calif USA
Joined Feb 1999
12,241 Posts
Thanks for the comments

Well the anticipated maiden did not take place yet since the taxi test at the field resulted, at the end of a 5-min test run on the ground, in a shorted 1515-1.5 motor (on 9S 4000's , 94A measured, 2900W measured), a blown brand new 100A controller due to the shorted motor, and a fire in the plane that reduced most of the rear servo wiring to charcoal ...

Luckily that was all the damage as we got the batts quickly out of the plane in seconds (one of them sits right next to the esc)...

Now I got a second brand new 120A TGY HV HK controller (the poor thing got initially blamed for the fire, but now I think it had nothing to do with it), the 1515 motor still fibrillates, I redid the servo wiring, and finally need to do major surgery to get the fan & motor out (which clearly has a short in one of the three Y's). The 1515-1.y will then go back to Steve Neu ...

Looking at the long can HET 700 motors as an alternative to get the MiG-21 into the air, eventually.

Herb is offline Find More Posts by Herb
Reply With Quote