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![Norms Studio - Menace Arm Kit [BAM-KVRXX-112] - Heavy-Duty Cinema Grip Equipment](/web/image/product.image/1094/image_1024/Norms%20Studio%20-%20Menace%20Arm%20Kit%20%5BBAM-KVRXX-112%5D%20-%20Heavy-Duty%20Cinema%20Grip%20Equipment?unique=4456157)
1-1/2" Speed-Rail Menace Arm Rigging Kit (Front Adapter, Center Post, Rear Weight Pin)
Complete 1-1/2" Schedule 40 speed-rail menace arm rigging system including front lighting adapter, center ear post slider, and rear counterweight receiver. Enables safe, unobstructed overhead lighting cantilevered up to 16 feet over talent and sets without intrusive floor stands. Backed by the Norms Lifetime Hardware Warranty.
SKU:
BAM-KVRXX-112
1-1/2" Speed-Rail Menace Arm Rigging Kit (Front Adapter, Center Post, Rear Weight Pin)
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 |