# Search results

1. ### Axial Thrust

I'm in the process of calculating my combined stress on an axle I am designing, I have calculated the bending and torsional stress, however I need to calculate the direct stress in the axle. In order to do this I need to know the axial thrust in my axle, I understand what axial force is but I am...
2. ### Choosing a bearing tolerance

I'm currently in the process of designing a bearing housing for an axle. Unfortunately I am not 100% on the diameter of my axle yet but I want to have a clear understanding what tolerances to use on my axle to bearing bore and bearing outer diameter to the bearing housing. I've looked over the...
3. ### Simple bending moment calculation

Hi, Really need some help with figuring out the max bending moment in the diagram shown below (I'm aware this is extremely simple but time and stress appear to have the better of me, so any help is appreciated) I think I've worked out the reactions at each support by doing m=wL as the...
4. ### Steel tables for calculating axle diameter

I'm in the process of calculating an axle diameter by using the bending moments which are created with the applied force on the end. In order to design my axle to be efficient, I believe I need to use the following equation. Sx = M/Fy Sx being Plastic Modulus Fy being Tensile strength of my...
5. ### Calculating gear ratios for a drivetrain

I'm trying to calculate the required gear sizes for the system shown below: The driven wheel is connected to a 600mm diameter bicycle wheel and the driver wheel connected to a 580 mm long lever arm which has a forward driving force of 40 N. I want to calculate the most efficient sizing of...
6. ### Force required to move the wheels on a manual wheelchair

Hi, I'm trying to calculate the force required to move the wheel on a standard wheelchair from stand still and then consistently over a flat surface? I understand that this has to with the amount of weight that is trying to be moved, this being the weight of the user (approx. 68kg) and the...
7. ### Acceleration of elevator and force in cable

Homework Statement Mass of elevator = 500kg Counterweight = 134kg Force in cable C1 is 1.2kn Determine the acceleration of the elevator and the force in cable C2 Homework Equations The Attempt at a Solution a = f / m a = (C2 - C1) / m2 a = ((m2 * g) - C1) / m2 a = ((134 * 9.81) -...
8. ### Statics Questions - Equilibrium in a pulley system

Homework Statement Find the value of W to maintain equilibrium Homework Equations The Attempt at a Solution I have split the system into two, creating a triangle. From this I have a right angle triangle with an adjacent of 2m, opposite of 0.6m and an hypotenuse of 2.088m (calculated through...