Duo Menace Arm Kit (Dual 1-1/2" Pipe High-Load Overhead Rig)
Dual 1-1/2" Schedule 40 speed-rail menace arm rigging kit engineered for extreme-load cinema lighting payloads up to 80 lbs at full 12-foot reach. Features twin-pipe structural geometry, heavy-duty center ear slider with center cable truss deflection, dual Junior receivers, and heavy rear counterweight post. Engineered in Hollywood, California.
SKU:
BAM-KVDXX-112
Duo Menace Arm Kit (Dual 1-1/2" Pipe High-Load Overhead Rig)
Engineering Fact Sheet & Mechanical Specifications
Reach & Payload Metrics Imperial / Metric
| Primary Mounting Mount | 1-1/8" Junior Pin & 5/8" Baby Pin Solid Stainless Steel |
| Working Load Limit (WLL) | 80.0 lbs (36.3 kg) on Duo Menace / 45.0 lbs (20.4 kg) on Single 1-1/2" Kit at 12 ft reach (25 lbs at 16 ft) |
| Torque & Bending Limit | 1-1/2" Schedule 40 Aluminum Pipe Properties: OD = 1.900", Wall = 0.145", Ix = 0.310 inโด, Z = 0.326 inยณ, Bending Stress ฯ_b โค 15,000 psi |
| Safety Design Factor | 5:1 ASME B30.26 / B30.10 |
Materials Science & Metallurgy Rigging Standard
| Structural Alloy | ASTM A513 Type 5 DOM 1026 Carbon Steel / 6061-T6 Structural Aluminum |
| Section Spec | Schedule 40 (1.900" OD ร .145" Wall) / 14-Gauge (.083" / 2.11mm) |
| Friction Brake Disc | CDA 360 Solid Brass |
| Corrosion Rating | ASTM B841 (1,000+ Hrs Salt Fog) |
Cinema Rigging Physics & Fulcrum Safety
Hollywood Rigging ProtocolsFulcrum Moment Balance
3:1 REAR COUNTERWEIGHTCalculate required counterweight using W_cw = (W_payload ร L_front + W_arm ร L_cg) / L_rear. Always secure rear counterweight sandbags or barbell weights with safety linchpins before hoisting lighting fixtures.
1-1/2" Speed-Rail Rigidity
SCHEDULE 40 PIPEStandard 1.900" OD Schedule 40 6061-T6 aluminum pipe delivers a section modulus of Z = 0.326 inยณ and moment of inertia Ix = 0.310 in&sup4;, eliminating structural deflection and bending oscillations over extended overhead reaches.
Right-Hand Rigging Invariant
CLOCKWISE GRAVITY LOCKAlways rig cantilevered arms so gravity acts clockwise relative to the T-handle lock. Downward fixture weight actively tightens the brass friction disc against the knuckle, preventing catastrophic slip.
Complete Your Rigging & Boom Setup
Pairs seamlessly with 4-1/2" Lollipop Grip Heads, Heavy Combo Stands, 1-1/2" Speed-Rail pipe, and 25โ35 lb heavy saddle sandbags.
Standard Hardware Lifetime Warranty
All Norms rigging hardware and stands are backed by a complete lifetime warranty against manufacturing defects.
Product Info
| Pipe Diameter | 1-1/4" Pipe or 1-1/2" Pipe |