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MD-250-M Overview

Mustang has developed a low-cost, simple to use, easy-to-install heavy duty chassis dynamometer that can be used to simulate real-world driving conditions in a safe, controlled environment and can also be used for “static” diesel smog testing for regulatory purposes. This model is used in Diesel Smog Programs in Nevada and Colorado when combined with an approved opacity meter. The MD-250-M is a compact dynamometer with industry proven design features including 10.7-inch rollers, heavy duty spherical pillow-block ball bearings, welded structural steel frame, 7.5 hp calibration motor, and an industry standard air-cooled, Eddy Current Power Absorption Unit (PAU) for road-load simulation. The MD-250-M is available in both right and left hand configurations to accommodate different facility designs.

MD-250-M Specifications

Certifications: UL listed, Nevada approved for Diesel Smog Testing, Colorado approved for Diesel Smog Testing, Manufactured in an ISO Certified Plant

Max Absorption: 900 hp (672 kW) peak absorption dual PAU

Loading Device: Air-cooled eddy current power absorber

Calibration Motor: 7.5-horsepower (for calibration only, not meant for transient testing)

Inertia: 2,000 lbs. (907 kg) base mechanical inertia, nominal

Max Speed: 100 mph (160 km/h)

Rolls/Wheelbase:

Precision machined & dynamically balanced


Knurled surface finish


10.7” (272 mm) diameter balanced rolls


40” (1,016 mm) face length


28” (711 mm) inner track width


108” (2,743 mm) outer track width


19.6” (498 mm) roll spacing

Rollers are belted for bi-directional testing capability

Roll Lock: Between roll lift with integrated roll lock

Roll Decelerator: Allows vehicle deceleration without use of vehicle brakes. Eddy Current PAU used to decelerate rollers.

Air Requirements: 120 PSI, dry, regulated, oil free

Power Requirements:

115 VAC, single phase, 60 Hz, 20 Amps (instrumentation)

230 VAC, single phase, 60 Hz, 40 Amps & 230 VAC, three phase, 40-amps (dynamometer)

Axle Weight: 24,000 lbs. (10,886 kg) maximum

Shipping Weight: 4,500 lbs. (2,041 kg) dynamometer weight only

MD-250-M Downloads

Mustang Dynamometer accepts Bitcoin for sales of new and used performance chassis dynamometers only. Contact Sales@MustangDyne.com for more details.