Thread is a month old but why not? I swing the new APC 16x5.5MR props with my 3638's. Flies very nice. Total weight with Blackmagic Pocket/14mm lens, 3-axis, and 2x6500maH batts= 5000g. MK stack. I have barely enough room to swing the 18" props, might experiment with those.i've used 12x6 APC and 13x6.5APC without problems.