I have an m645 prop that just kicks every other props ass. No matter what. I just did an X646 to try and beat my m645. Nope. It's about 4 mph slower. I detounged the crap out of it but maybe not enough. I tried an abc 1816 and it was horrible. Think I screwed it up anyway. Not worried with that one, it ended up at like 41 mm cuz I slipped on the belt sander lol. Anyway, look at the tongue difference. Should I cut the X646 down even more like the m645? M645 on right. X646 on left and abc on the rear.
The X646 is just much nicer and you can tell it's thinner. Just more tongue.
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