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gru

  1. H

    hpi crawler king motor and esc hot after gear reduction unit installed????!!!

    pretty new to this forum but i just got a hpi ck and installed the gru in it this morning. i worked for maybe 5 minutes and stopped. the motor is hot as well as the esc. has all the stock hpi parts and the hpi 55t crawler motor. any advice or suggestions would be great!
  2. ovstebo

    Motor setups: #of turns and Gearing

    Hello Yall! Im reading up on motor setups, but cant seem to find a good answer: What would be the preferred setup, 1. A high turn motor (eg 50T), no or little gearing. 2. A low turn motor (eg 5.5T), with an ultra low gear, GRU fitted (eg 50:1). Dont know if any of you have tried alternative...
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