Contents
How is final drive torque calculated?
engine torque, Te = 150 Nm. gearbox (1st) gear ratio, ix = 4.171. final drive ratio, i0 = 3.460….How to calculate wheel torque from engine torque.
| Gear # | Gear ratio symbol | Gear ratio |
|---|---|---|
| 5 | i5 | 0.867 |
| 6 | i6 | 0.691 |
| Final drive | i0 | 3.460 |
How do you calculate torque from wheel torque?
To calculate the torque at the wheel, multiply A * B * C *D, this will give you theoretical wheel torque; the actual value will be lower owing to transmission losses, which is approx 10–12%. Using an imagined torque curve for the Triumph Speed Triple which makes a maximum torque of around 112Nm and 135hp.
How do you calculate wheel force?
The required tractive torque of the motor shall be equal to the tractive torque at wheel, Tw = Ft. rw , (i.e. Tractive Torque = Tractive Force x mean wheel radius). So you must determine the acceleration required to reach you designed speed.
What gear ratio is better for torque?
In general, a lower final drive ratio will lead to less torque at the wheels but a higher top speed. Meanwhile, a higher ratio will result in the opposite, i.e. more torque at the wheels but a lower top speed.
How do you calculate the force needed to move a car?
If the car is on flat ground and friction is negligible (which is true if it has inflated tires and is moving slowly), then the force required to accelerate the car is given by force = mass times acceleration or F=M x a. According to this, even a very small amount of force is sufficient to move a car, albeit slowly.
How to calculate the tractive force of a tire?
Applied tractive force based on engine torque equation: F z = [ 2 · π · M mot · η · i G · i v · i A] / U. Where , F z = Tractive force in N M mot = Engine torque in Nm η = Overall efficiency of power train (see table below) i G = Transmission ratio) i v = Driving axle ratio i A = Final drive atio of the driven axle(s)
How to calculate wheel torque from engine torque?
1 Step 1. Calculate the (free static) wheel radius from the tire size marking. The method for calculating the wheel radius… 2 Step 2. Calculate the wheel torque using equation (6). 3 Step 3. Calculate the wheel force using equation (11). More
How does tire diameter affect final drive ratio?
Once you determine the diameter of your old tires and potential replacements, you can compare the effect of new tires on the final drive ratio. For example, if you have 26-inch tall tires with a 3.55 gear, and you want to go to 28-inch tall tires.
How is the traction force of a car determined?
The maximum permissible traction or force that can be applied to the wheels is governed by two things: the weight of the vehicle and the adhesion coefficient between the tire and the road surface.