It depends on your set up a lot?
21-Mono = 1614/3 Chopper And Cleaver Style both are great propellers.
21-Hydro = 1717-19-38%, 1815-19-38%, 1817-19-38% with reduced diameter 44mm.
21-Tunnel = 1515-19-38% and 1514-17-45%
45-Hydro = 2117-19-38%,2215-17-45%, 2217-19-38%, with a ski = 2317-19-38%
45-Tunnel = still working on them,the 1817-19-38% and 1915-19-38%
45-Mono = 2015-17-45%
67-Hydro = 2415-17-45%, 2517-19-38%
1/8th scale = 2315-17-45%, 2317-19-38%, 2315-19-38%
Twin Hydros = 2717-19-38%, 2719-19-38%, 2817-19-38%, 2819-19-38%
Still testing the 2315/3-15-47% for a better three propeller.
Some in stock currently and others are on order from Jim @ ABC
I can tell you most of these are not just sharpen and balance no matter what you read or hear on Facebook.
Many other options coming up soon. Some just need more work than others.
Thanks For Reading,
Edited by shoboat, 05 August 2018 - 05:56 AM.