I use the LPF without a fan on my B4 and 8.5 SP motor. Its fine.
I would not recommend lower than a 7.5 motor in a 2wd, its more than enough.
HTH
Mark
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:: AE B5MCE - SP 7.5 v3.0 Brushless Motor - Reedy Shorty Lipo - Savox Servo - Spektrum Rx ::
:: Paint By Turnip Paint ::
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