lol that was funny

on a supertigre 90 my 3d prop of choice was a 15x4 apc it did about 9500 rpm /////////// i would give a 15x4 APC a try, im not sure how much stronger ASP 108s are compared to ST 90s if you start approaching 10k rpm, maybe a 15x5 apcor 16x4apc would work