hopbot wrote:hey there guys...
@The7: the <a href="http://www.cyclone-usa.com/store.php?crn=200" target="_blank">cyclone usa website</a> states the gearbox ont he 500w motor is 9.55:1
Thanks for the update.
The webside said:
500 Watt Motor with 9.55:1 Planetary Gearbox and Internal Controller
Size: Length: 6.5"L x 3.50"H x 3.50"W
Weight: 7.15 lbs (3.24 Kgr)
Gearbox: Integral, Planetary - 9.55:1 Ratio
Sprocket: 14 Tooth Freewheeling
Motor Controller: Internal, PWM 40Amp Max.
Peak Current: 39Amps
Continuous Current: 24Amps
Maximum Motor RPM: 2800
How many speeds are there in your wheel sprocket?
Is it an 7 speeds with 11T to 28T?
If wheel sprocket is at 11 T,
At max motor rpm of 2800 rpm
Max rpm at gear out = 2800/9.55 = 293 rpm
Max rpm at drive wheel = 293 X14/11 = 373 rpm
Max speed for 26" wheel = 2.07 X 373 X 60/1000 = 46 km/h (28.7 mph)
If wheel sprocket is at 28T
Then max speed = 18 km/h (11 mph)
Your top speed of 28mph matches the above calculation.