1. Cymbal Stand Surface Mount Hinge Light Rail Structure Bracket
Structure Design
Section A
Section B 3 2 4
Cymbal Stand
Surface Mount Hinge
Light Rail Structure
Bracket 1
Section C

2. PARTS LIST Extruded Aluminum 2” Surface Mount Hinge
Section A – Bottom View
Rounded Head Screw
Section A – Side View
Cymbal Stand

3. PARTS LIST
1.5”
Extruded Aluminum 2” 2” 4”
Section B – Bottom View
Counter Sink Screw
Section B – Side View

4. PARTS LIST
Extruded Aluminum
Rounded Head Screw
Section C – Top View
Section C – Side View

5. Worst Case Scenario Calculations
Bearing Stress of Bracket
Hole Diameter – 0.190”
Thickness – 0.160”
𝜎 𝑏 = 𝐹 𝑡𝑑 = 400 psi
Shear of Rounded Screw
Screw Diameter – 0.190”
τ= 𝐹 𝐴 𝑏 = 450 psi
Shear of Counter Sink Screw
Screw Diameter – 1/4”
τ= 𝐹 𝐴 𝑏 = 250 psi
Bearing Stress of Light Rail
Hole Diameter – 1/4"
Thickness – 1/8”
𝜎 𝑏 = 𝐹 𝑡𝑑 = 50 psi
15’
𝑁𝑜𝑡𝑒: 𝐹=𝜌𝐴𝑔𝐿 = 26.3 lbf
Material Properties – Aluminum
Bearing Yield Strength
14900 psi
Shear Strength
12000 psi
Tensile Strength
8000 psi
Density
lb/in3
Young’s Modulus
10000 ksi

6. Worst Case Scenario Calculations
Deflection of Light Rail at L/2
Base Length – 2”
Height Length – 3/4”
Overall Length – 15’ or 180”
Gravity – 32.2 ft/s/s
𝛿= 5ρ𝐴𝑔 𝐿 𝐸𝐼 = 0.88”
Max Stress of Light Rail at L/2
𝜎 𝑚 = 𝑀𝑦 𝐼 = 1300 psi
L = 15’
Material Properties – Aluminum
Bearing Yield Strength
14900 psi
Shear Strength
12000 psi
Tensile Strength
8000 psi
Density
lb/in3
Young’s Modulus
10000 ksi