I used the on a HK450 with Align FBL head and a µRondo system. It works pretty well. Also regarding the weight are these blades in a good range. If you have some with less weight, you need to decrease cyclic pith, for mor weight you have to increase cyclic pith. Everything else won't be an issue.
second time I order these. am still using the first set and they have a fair share of ground contact but they are still going strong with just a few bumps, but at my crash rate I'd rather have a spare set at hand ;)
QualitÃ veramente impressionante una finitura dettagliata e pulitissima molto resistenti eccezionali per un hovering pulitissimo e volo 3D. Quality really impressive finish very resistant exceptional detail and spotless clean and hover for a 3D flight.