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View Full Version : Another Head Speed Calc Hurricane 550 added


G-MRM
07-18-2007, 09:14 AM
Another HS calc but added info for the Hurricane !! 8-)

http://www.readyheli.com/Online_Headspeed_Calculator_s/81.htm

DarkHorse
07-18-2007, 10:22 AM
Here's another custom specific: http://www.ezfly.se/hscalc.htm


I think you can use most calculators if you plug in the ruff equivalent main gear numbers:
42 * (61/19) = 134.842 or ~135T main gear equivilent for calc use
61 * (61/19) = 195.842 or ~196T main gear equivilent for calc use
68 * (61/19) = 218.316 or ~218T main gear equivilent for calc use

Or try my Hurricane Stock estimate (http://dhrc.rchomepage.com/calcAdvanced.htm?kv=850&voltage=22.2&pinion=23&gearTeeth=196&drag=.85&MRdia2=1110&mAh=2100&AUW=2000&packV2=22.20&MRdia=1110&TRdia=222&MRchord=40&TRchord=25&MRblades=2&TRblades=2&boomlength=620&TRratio=4&The_modtype=1&profiledrage=0.0035&sliderThrottle=83.83&sliderPitch=4.6&motortype=0&outKv=850&outRm=0.039&MaxIo=?&outMotoroz=170&outIo=3.1&esctype=38&Resc=0.0013&Amp=10&metric_escWt=6&celltype=123&outCellCap=2100&numofcells=6&parallel=1&Vcell=3.70&packV=22.20&outCellRes=0.01005&outCellWt=63.5&PackWt=381&metric_temper=12.15&metric_altit=1524&metric_pressure=803&AirDensity=0.980491&temper=53.9&altit=5000&pressure=23.7&govRPM=2000&MRrpm=1933&Thr_P5=100&Thr_P4=85&Thr_P3=80&Pit_P5=100&Pit_P4=75&Pit_P3=50&PitchRangeHigh=12&PitchRangeLow=0&checkbox_mix=true&checkbox_gov=false&redButton=B-Swift600&checkbox_bal_thrust=0&checkbox_bal_power=0&LastItem=MRthrust3&), requires more blade dimension info and motor description numbers.