Did some prop testing with a 8xl today & an etti 125 ESC with extra caps & G3 6500 mah lipos , and was very impressed with the speeds & handling ,strut set at 7/8 deep & angle nuetral...total of 4 miles coverd on one set of lipos on glass conditions ...
1- 225 prather / SB- 53.7mph / very good off the mark / temps ok
2- octura 2047- 55.6mph /temps a little on the high side & hard to get onto plane
3-40x57 sharpened- 52mph/ temps cool
my favorite prop with this set up was a octura x445/SB , very quick off the mark & good top speed but did not have the GPS on board for that one.
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