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Hi,

First, I want to thank ahead of time any help that can be provided. Second, I'm just an advanced tinker'r needing help on a project.

-Lever 1 and Clamp are attached

-Lever 2 and Rod 2 are attached.

-Clamp is tightened around Rod 2

-Upward force on end of Lever 2 needs to be at least 90 lbs without Clamp slipping.

1. Calculate the Clamping Force using the equation from:(https://www.engineersedge.com/calculators/torque_calc.htm)

Bolt Major Dia: .3125"

Coef Friction: .2 (steel)

2. Calculate the Needed Clamping Force using the equation in posting:

(https://www.physicsforums.com/threads/determining-the-clamping-force-on-a-tube.558240/)

F_clamping X Radius_tube = F_applied X Larm or

F_Clamping = (F_applied X Larm) / Radius_tube

= (50 lbs x 2.756") / .237"

= 581.435 lbs

Since the Clamping Force of 800 lbs exceeds the needed F_Clamping of 581 lbs, this scenario should be successful.

Is all of this correct?

I do wonder if the 160 deg angle affects this. Also, how does the contact square area of the clamp come into play on frictional force?

Thanks Again!!!

First, I want to thank ahead of time any help that can be provided. Second, I'm just an advanced tinker'r needing help on a project.

__Description:__-Lever 1 and Clamp are attached

-Lever 2 and Rod 2 are attached.

-Clamp is tightened around Rod 2

-Upward force on end of Lever 2 needs to be at least 90 lbs without Clamp slipping.

__What I've tried to do:__1. Calculate the Clamping Force using the equation from:(https://www.engineersedge.com/calculators/torque_calc.htm)

Bolt Major Dia: .3125"

Coef Friction: .2 (steel)

**Calculated**Axial bolt clamp force = 800 lbs2. Calculate the Needed Clamping Force using the equation in posting:

(https://www.physicsforums.com/threads/determining-the-clamping-force-on-a-tube.558240/)

F_clamping X Radius_tube = F_applied X Larm or

F_Clamping = (F_applied X Larm) / Radius_tube

= (50 lbs x 2.756") / .237"

= 581.435 lbs

__Summary:__Since the Clamping Force of 800 lbs exceeds the needed F_Clamping of 581 lbs, this scenario should be successful.

Is all of this correct?

I do wonder if the 160 deg angle affects this. Also, how does the contact square area of the clamp come into play on frictional force?

Thanks Again!!!

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