Picked up a used Twister T6 for $400 and replaced the gear box for $100 and now its like new again.
The J&D Manufacturing 72" Mega Direct Drive Exhaust Fan sets a new standard in large-scale barn ventilation performance and reliability. Powered by a 4.0 kW IP66-rated permanent magnet direct-drive motor with an integrated variable-speed driver, this fan delivers up to 64,057 CFM - among the highest outputs available in any barn exhaust fan - with no belts, pulleys, bearings, or tensioners to service. Available in galvanized or poly propeller configurations, the Mega Direct Drive is purpose-built for dairy, poultry, livestock, greenhouse, and industrial operations where maximum airflow and minimal maintenance are non-negotiable.
Features & Benefits
- Permanent Magnet Direct-Drive Motor - Zero Maintenance: Eliminates belts, pulleys, bearings, tensioners, and greasing - reducing scheduled maintenance and virtually eliminating drivetrain failures.
- IP66-Rated Totally Enclosed Motor: Fully sealed against dust and water ingress for maximum reliability in the harshest agricultural environments.
- Integrated Variable Speed Driver: Onboard driver enables precise airflow control without a separate VFD, simplifying installation and reducing component cost.
- Soft Start: Gradual motor ramp-up on each start reduces mechanical stress and extends fan life.
- Galvanized or Poly Propeller Options: Choose the prop material that best suits your application and corrosion resistance requirements.
- UV-Resistant Fiberglass Housing & Cone: Smooth molded exterior resists UV degradation and is easy to clean for low ongoing maintenance.
- High Performance & High Efficiency Models: Standard model delivers up to 64,057 CFM; HE model exceeds 23 CFM/Watt for maximum energy savings.
- Backed by a 2-Year Warranty: J&D's industry-standard warranty on all Mega Direct Drive fans.
Technical Specifications
| Part # | Motor | Volts | Amps | Phase | RPM | Prop | CFM @ 0" SP | CFM @ 0.05" SP | CFM @ 0.10" SP | CFM @ 0.15" SP | CFM @ 0.20" SP | FEI @ 0.10" |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VMDA72G3C43C | 4.0 kW PM-DD | 460 | 6.15 | 3 | 450 | Galvanized | 64,057 | 61,269 | 58,368 | 54,955 | 50,969 | 1.75 |
| VMDA72G3C43C-HE | 4.0 kW PM-DD | 460 | 6.15 | 3 | 450 | Galvanized | 54,987 | 52,784 | 50,084 | 46,850 | 43,519 | 2.28 |
| VMDA72P5C43C | 4.0 kW PM-DD | 460 | 6.15 | 3 | 450 | Poly | 59,594 | 57,603 | 55,505 | 53,460 | 51,268 | 1.75 |
