eyeflyhelis
07-07-2008, 11:30 PM
so like the title says anyone got a calculator? whats the max rpm a hyper 50 engine can turn a k3d head at 100% throttle?
os max rpm = 20,000
i figure a rough guess under load to be 18500 -1900max under load
k3d gear ratio = 8.7:1:5
if reading that correctly its 8.7 :1 on the main and x5 on tail
so that would =
20k= 2298 headspeed
18.5k=2126 headspeed
19k= 2180 headspeed
therefore meaning that if you can safely turn your head 2300rpm (in theory with CF blades) then you can run 100 straight across the throttle curve and at 0* pitch not over speed your engine or head.
95% of engine is 19k that where that # comes into play so if someone ran an engine at 95% throttle curve flat they should be safe with out ever overreving.
if this is the case that would mean you can just run 95% throttle and never need a governor.
thoughts?
os max rpm = 20,000
i figure a rough guess under load to be 18500 -1900max under load
k3d gear ratio = 8.7:1:5
if reading that correctly its 8.7 :1 on the main and x5 on tail
so that would =
20k= 2298 headspeed
18.5k=2126 headspeed
19k= 2180 headspeed
therefore meaning that if you can safely turn your head 2300rpm (in theory with CF blades) then you can run 100 straight across the throttle curve and at 0* pitch not over speed your engine or head.
95% of engine is 19k that where that # comes into play so if someone ran an engine at 95% throttle curve flat they should be safe with out ever overreving.
if this is the case that would mean you can just run 95% throttle and never need a governor.
thoughts?