Which Stock Motor???
#31
i have no clue what roll out is
this might be another stupid question too but what do you mean by the 34 35mm thing???
this might be another stupid question too but what do you mean by the 34 35mm thing???
#32
OK, I'll try and make it as clear as I can
Rollout is the distance the car travels per revolution of the motor.
In order to calculate rollout you need to know the following
Tyre diameter
Spur gear size
Pinion gear size
Internal ratio for your car. In your example it is 2.2:1
Value of pi=3.14159
Firstly work out the Final drive ratio for your car which is done by the following equation
Final Drive = (spur gear size/ pinion gear size) X Internal Ratio
To get the rollout figure use the following equation.
Rollout=(Tyre Diameter X Pi ) / Final Drive ratio.
(In equations above the symbol "/" means "divided By")
As an example for you, if your 414MII had a 128tooth Spur gear and 45Tooth Pinion (0.4 Module Tamiya ) with 64mm diameter tyres then your rollout would be calculated as follows.
Final Drive Ratio = (128/45) X 2.2
Therefore FDR equals 6.257
Rollout = (64 X 3.14159) / 6.257
Therefore rollout would be 32.13mm
Hope this is not too confusing
Steevo
Rollout is the distance the car travels per revolution of the motor.
In order to calculate rollout you need to know the following
Tyre diameter
Spur gear size
Pinion gear size
Internal ratio for your car. In your example it is 2.2:1
Value of pi=3.14159
Firstly work out the Final drive ratio for your car which is done by the following equation
Final Drive = (spur gear size/ pinion gear size) X Internal Ratio
To get the rollout figure use the following equation.
Rollout=(Tyre Diameter X Pi ) / Final Drive ratio.
(In equations above the symbol "/" means "divided By")
As an example for you, if your 414MII had a 128tooth Spur gear and 45Tooth Pinion (0.4 Module Tamiya ) with 64mm diameter tyres then your rollout would be calculated as follows.
Final Drive Ratio = (128/45) X 2.2
Therefore FDR equals 6.257
Rollout = (64 X 3.14159) / 6.257
Therefore rollout would be 32.13mm
Hope this is not too confusing
Steevo
#33
ahhh ok...
i get it
thanx a bunch
im still a newbie driver. still learning and gathering as much info as i can....
i get it
thanx a bunch
im still a newbie driver. still learning and gathering as much info as i can....
#34
I know Steevo already said it above but...
Rollout - "[(Tire Diameter X 3.14 )/(Teeth in Spur Gear/Teeth on Pinion Gear)] / Gearbox Ratio" (from balakracing.com)
Rollout - "[(Tire Diameter X 3.14 )/(Teeth in Spur Gear/Teeth on Pinion Gear)] / Gearbox Ratio" (from balakracing.com)