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  1. #1
    RC poster
    Join Date
    May 2010
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    Noob question most likely

    I was just wondering if I could get an explanation of what the KV on an motor stands for exactly.....? Thanks

  2. #2
    RC Turnbuckle Jr. pavmentsurfer's Avatar
    Join Date
    Jul 2009
    Location
    Ontario, Canada
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    11,145
    RPM Per volt applied. In other words, the motor will attempt to spin that many RPM for every volt you feed it. This is why an 3S lipo (11.1 volts) is faster than a 2S lipo (7.4 volts) with exactly the same gearing. Its also why a lower KV motor CAN be faster than a higher KV motor if you put more voltage through it. Simple math. BUT, lower KV motors often (not always) produce more torque and create less heat, allowing them to run HIGH gear ratios (or high load), therefore producing more speed. You need to gear a 9000kv motor so low to keep it from overheating that it cant go as fast as a 3600kv motor on the same voltage... this is NOT a rule... its just a possibility depending on the circumstances.
    Pede, Summit,
    ERBE, Rally,
    Motley Crew, 1SQ

  3. #3
    RC Racer
    Join Date
    May 2010
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    144
    ^^thats some of the most concise info I've read yet! I'm still new too, thanks!

  4. #4
    RC poster
    Join Date
    May 2010
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    13
    hats off to you. thanks for the info.

  5. #5
    RC Champion
    Join Date
    Jan 2010
    Location
    Green Bay, WI
    Posts
    2,269
    Wow pavementsurfer, great info, this forum needs more posters like you!
    Never knew that stuff, thanks for the help.
    PLEASE do not PM me and immediately go offline :p

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