check out darkhorse head speed calculator
just search in goolge, a gaui 200 is on there
you can set diffrent variables and get pretty accurate hs
your probably above 4000, but depends on your packs at full voltage your probably above 4500, i bet its fine.
the heli comes with a 15t pinion, so its meant to be at that speed.
it just seems high, i wonder how gaui figured its head speeds?
full or nominal voltage
Dx8 mCPX bl v1 hp05s130X