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  1. #1

    Join Date
    Jan 2005
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    Lancair motor upgrade

    Hello everyone,I am new to the world of electrics,but not to rc flying.Recently acquired a Electrify Lancair ep.It has a 400 brushed motor and a gear drive.I want to change that setup to a brushless motor direct drive and still use the 9" size props.I have no idea how to figure this out.What size motor,what kv rating,esc and batteries.The overall weight will be no more than 32 ounces.Any help will be deeply appreciated.

  2. #2

    Join Date
    Dec 2002
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    Chattanooga, TN
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    For this type of aircraft 100W/lb is probably more than sufficient.... so 200W should be plenty, and 300W would be a rocket ship.

    A geared 400 would be around 100-120W... this motor is lighter than a geared 400....http://www.hobbyking.com/hobbyking/s...00kv_560w.html.... it would give you way more than that (200W+).. you could even prop down to 8".

    Probably the 1100Kv version would be enough using the 9" prop http://www.hobbyking.com/hobbyking/store/__16230__NTM_Prop_Drive_Series_35_30_1100kv_380w.h tml/ 3s 1200-1500mAh battery, 30A ESC. http://www.hobbyking.com/hobbyking/s...ontroller.html
    Last edited by Dr Kiwi; 08-23-2013 at 08:14 PM.
    Dr Phil Millener, Chattanooga, TN

  3. #3

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    Lancair

    Thanks to the Doctor,this is just what I was looking for.Should do quite well.Many thanks for the informative answer,,,,Freddy


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