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| Hi an OS 55 would be awesome too!, for prop for the 70, i was using 13x6 master airscrew, and 13x5 master airscrew, both worked really well, for a powerful os 70 with nitro i would go for 13x6, but if its a bit more tired 13x5 is what i was using. | |
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What size prop for the 55AX?
