Hi there

Graupner in europe means quality. For over 20 years Ive been using graupner parts and ALWAYS they were TOP QUALITY. Where did you get yours parts from? China? Probably some graupner's subcontractors produce them in China, or in any cheap country. **** happens.

All motor I used in the past ( brush ) were made by Graupner or Robbe or Multiplex. Each of one was selected, however, all of them were produced by MABUSHI. Only the sticker was from the firms mentioned above. I destroyed dozens of them during tests in my workshop because I believed they would run on 12 cells. But they werent.

All above shows that we had different experiences in the past. Nothing wrong, I think. I usually hadn't been running Speed brush motor on higher voltage. Each magnet overheated loses its power, or lemme tell you this in that way, that magnets change their characteristics. So we have to cool them down to the safe temperature.

However we all know that. So, let's go forward and help speed - king. I suggest him to start with 700 type motor, add cooling system.

You Ryan show him where to buy all these things. Speed king has got two batteries already. Why not to use them?

Peter