some performance figures from TAIC manual by Edward T. Maloney ISBN number 0-915-464-03-02 Ki-84 Frank 1
Take Off
T.O. 7,940lbs 686'
T.O. 25knt wind 9,194lbs 1019'
climb - ceiling
rate @ S.L. 3,780 fpm
rate @ 21,000' 3,290 fpm
time to 10,000' 2.7
time to 20,000' 5.8
time to 30,000' 9.8
speed @ 7,940lbs.
348 mph 302 knts @ S.L.
422 mph 367 knts @21,000'
396 mph 344 knts @30,000'
engine
take off 1,970hp @ S.L
normal 1,150hp @ 8,000ft
normal 1,000hp @ 22,000ft
military 1,875hp @ 5,900ft
military 1,675hp @ 19,600ft
wep 2,050hp @ 2,500ft
model Ha 45 model 21 type radial 18 cylinders 2 speed super charger 4 blade 10' diameterC.S. electric prop
fuel used 92 plus methanol
I dont know if this helps anybody or if you already had this data from this particular book.