Since the weight info on a lot of websites is incomplete and weight matters more than anything else on these machines...
Could everyone of you guys weight their spare frames? The real weight is key and sometimes really hard to figure out and as a matter of fact - a lot of these frames are ridiculously heavy (!).
Let me start this with only the weights of the top and bottom plates of some two plate frames (everyone uses different spacer hardware and the stock hardware is very often too heavy and unusable):
bottom plate: 9g (pretty much exactly)
top plate: 2.7g
waaaaay too heavy (especially for 1102 motors)
bottom plate: 6.68g
top plate: 1.45g
a bit better, still not super light.
Should have some spares of the X2 ELF 88mm soon to weight top and bottom plates.