Thanks folks for the useful input , I currently build indoor model aircraft where anything over 1oz [32 grams] is considered heavy ! so I am looking aghast at the tons <pun> of 1/2 plywood in your tanks.
Although I cannot overcome the friction needed to drive the TTS track system I was hoping some serious weight reduction might help the performance with KCM motors,
I do remember in a past thread seeing Window Winder motors were not recomended as they are not continous use like say Window Wipers , I would have thought electric drills were not continous use either ?
regards paul
PS thanks for spread sheet , a treasure trove of proven data