what prop for mean machine 4s 1500kv

[gregk]

i normally run my mm on 6s with a 4082 nemisis and a x645 . i want to race so i gotta drop down to 4s . knowing my kv is kinda low on 4s what kinda prop would u guys thinks would b best ?( trying for mid 40s.) its crazy how much speed you loose droping 2s her best gps on 6s with a x647 was 69.5 ( never saw that number again though , she is 60 + all day in flat water

[Alexgar]

X646 would do it I use it in my apparition but your kv may be a little low for 4s

[Make-a-Wake]

Try a Prather s240 or an x648..................