I’m 96kg:crying:my mate is 85kg and we have flown this J160 all around Aust at gross while not have the best of climb rates it is only rated at 600ft at see level we have no trouble with the J160. ;);)It is kit no 12 one of the first ever built.I also fly a 65 hp Aeronca rated at 300ft at see level at all up weight you do have to know the difference between the front and back end of a thermal on T/O with her.:angry:The J160 will out climb any C150 that I have had the pleasure of Flying.