hooty--
So, the principle is simultaneous high rpm and high gear ratios? I'm inclined to agree. Do you have a good explanation you could share with us as to why it works that way? I think we need to hear it because it will resolve many questions.
While I've not seen reports on MTBF studies on the ZZ/ZZSE motors, I've heard the higher rpm motors die sooner than the lower rpm motors. Is there a lower rpm motor option that is almost as good and will last a little longer?
I've just uploaded a gear ratio and motor options chart for ZZs and ZZSEs on my website:
www.gcrossett.com/zipzaps/.
I think you've given one of the better replies to his type of question because you've specified actual parts he can try.
chilli
Does McDonald's have a trademark on "mcboob"?