Hi The_Aleman,
Whoops! My Q-Matic will take out all 4Gs period, at speeds over 10 MPH. The 4G if geared normally might lead for the first 50 feet, but nowhere near 20 MPH.
There are many reasons we elected to set the ratios on the Q-Matic slightly different. We think having the motor completely wound up at 25 MPH isn't a great idea [8200 RPM].
As several can attest, the motor doesn't like running way above Redline for an extended time [will pull the rod apart].
The Q-matic is "geared" to cruise at 25 MPH [@5000 RPMs] in stock form, and 39 MPH at redline[7800 RPMs]. This arrangement still has plenty of power to climb hills, get great mileage [175 MPG], and cruise without killing the motor.
The advantage of 4-stroke motors over 2 stroke counterparts is low end torque, therefore "gearing" it like a 2-stroke defeats the purpose. 2-stroke motors develope more power at higher RPMS, but are weak in low end torque.
Considering we only use a single speed drive, we think it important not to setup for instant starts, or high top end, but a good working average. While it is true, the Q-Matic can be ratio tuned to actually arrive at 50 MPH, or match other drive ratios for rocket ship launches, we think the average rider wants a smooth ride without problems.
Because of design even when matched with the same ratios of other drives, the Q-Matic transfers more power to the rear wheel and always sets the pace. We don't spin the clutch at motor speed, use gears, chains, freewheels, heavy power robbing grease, or low quailty bearings & bushings.
I am so sure the Q-Matic transfers more power to the rear wheel, that I will gladly challenge anyone with the HS 49CC or Honda 49CC to climb any hill, 0 to 10 MPH, top end, etc at any event in 2011 that I attend. I must confess.......my STOCK EZ bike set the record at the dirt drags in 2009 against all contenders in the 150 foot race. The same bike easily obtained 35 MPH in the Roller Road competition as well without massive RPM numbers. The same day my 1950 Whizzer managed 40.3 MPH in the 150 Feet [still holds the record]race, and 68 MPH on the top end Roller Road competition.
I will be waiting!
Have fun,
)
