did you convert it?
[kv(battery volts)prop pitch]/1056 = no slippage speed
turnagy g-160 = 245 or 290kv
6s batt = 22.2volts
8s batt = 29.6volts
pitch = 8, 10, 12in
[290(22.2)12]/1056= 73.15mph, actual ~62mph
[290(29.6)12]/1056= 97.54mph actual ~83mph
[290(29.6)10]/1056= 81.3mph actual ~70mph
turnagy sk3 5060-320
[320(22.2)12]/1056= 80.7mph, actual ~69mph
I have a pt-19 dynaflight and I am planning to replace the g-38 with a G-160-245kv on 8s
[245(29.6)12]/1056= 82.4mph, actual ~69mph
hope this helps?
Joe