Overview
2,400* 2WD inertia-only unit includes: heavy-duty tube-steel frame and 24″-diameter roll assembly – with machined-in “traction grooves,” CNC turned and balanced roll, PTOs, air brakes, pit-plate plan, floor anchors, vehicle tie downs, DYNOmite-Lite data-acquisition computer, inductive RPM pickup, DYNO-MAX “Lite” software, 3-channel data harness, banner, accessories package, and manual (less PC). (Upgradeable to single or dual eddy-current absorbers, and “Pro” 28-channel – at any time.)
Specs
| DYNOmite Data-Acquisition Computer |  |
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Hardware configuration |
Expandable, hybrid (surface-mount and thru-hole) multi-layer board system |
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Voltage requirements (DAQ only) |
Runs on 120-volt 60-Hz AC, 240-volt 50-Hz AC, or 12-volt DC (specify) |
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Approvals |
CE and/or UL approved (per locale) |
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Board type and channel capacity |
Pro, PC linked − 3 channel |
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Expansion capacity upgrades |
Optional 28, 56, or 112+ channel capable subsystem |
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Data rate |
User-selectable rates up to 200 (1,000 optional) recordings per second (per channel) |
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Transducer wiring interface |
Quick-disconnect data harness − 3-channel |
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Calibration |
Non-volatile setup memory |
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Atmospheric correction rate |
Standard, SAE, DIN, JIS, ECE, J1995, Custom |
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Gear-ratio RPM and shifting compensation |
Smart Ratio™ automatic ratio calculation with multiple, simultaneous, RPM inputs |
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Recording features |
Smart Record™ automated recorder triggering |
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Data interface |
User selectable, USB or RS-232 serial port, output to a PC − via DYNO-MAX software option |
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Third-party data-output interface options |
Free Windows driver for National Instrument’s Lab View™ available |
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Temperature sensor |
0 to 255 Fahrenheit [-18 to 124 Celsius] thermistor (optional) |
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Standard and optional sensor inputs |
RPM, speed, torque, frequency, flow, thermocouples, thermistors, 0-5 volts, Lambda, position, etc. |
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Standard and optional control outputs |
Ignition shut-off, relay control, load-control stepper output, 0-5 volt D/A, etc. |
| Roller Frame | |
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Configuration |
Large-diameter ~24″ [~61 cm] (nominal) roll |
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Mechanical frame construction |
Fully-welded tube-steel frame, anchoring feet, greaseable bearings, and pit plate |
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Track width (max / min) |
88″ [224 cm] maximum, 21″ [53 cm] minimum (with deck plate in place) |
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Installation |
In ground (pit plans included) )with integral anchoring feet (above-ground mounting optional) |
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Optional above-ground vehicle hoist |
Optional four-post, adjustable track width, lift − with hydraulic power, control module, and safety air locks |
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Pneumatic requirements (for air brakes only) |
90 PSI [600 kPa] @ 3 CFM [5 meter^3/hr] |
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Power requirements, frame only (AWD only) |
115-volts AC @ 60-Hertz [or 230-volts @ 50-Hertz] (specify voltage) for wheelbase adjuster |
| Axle Weight Capacities | |
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Maximum dynamic load |
10,000 pounds [4,526 kg] (per axle) |
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Maximum static load |
10,000 pounds [4,536 kg] (per axle) |
| Rolls | |
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Effective inertia range |
Medium inertia (to allow absorber simulations) |
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Minimum simulated vehicle mass |
2,100 pounds [953 kg] typical (excluding absorption simulation) |
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Minimum balance tolerance |
G2.5 via internal, multi-plane, dynamic spin balancing |
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Steel-roll construction |
Monocoque with 360-degree welded end plates and 100% machine-finished thru-shafting |
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Roll-to-tire contact area’s surface finish |
Machined-in “traction grooves” for maximum grip (μ > 1.0) and tire life under high-power testing |
| Power Capacity (traction limited)* | |
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Industry’s claimed roll-power range* |
2,400 Hp [1,790 KW] |
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Industry’s claimed engine-power range* |
3,000 Hp [2,237 KW] |
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Notice |
*Power capacity is unlimited, but subject to roll diameter-induced tire deformation (safety) and traction (efficiency) limits. |
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Rolling-road’s diameter at tire contact-patch |
~24″ [~61 cm] (see tire manufacturer’s “dyno tire vs. roll-diameter safety guide”) |
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Tire deformation (due to roll’s diameter) |
2″ [51 mm] tire indentation (approximate) required for 5″ contact-patch length on typical automotive tire |
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Maximum displayed power |
Unlimited Hp [Kw] − real-time |
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Maximum inertial power (traction limited) |
Unlimited Hp [Kw] (but subject to roll diameter’s tire deformation and traction limits) |
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Maximum tractive force (traction limited) |
Unlimited lbs-force [kN] (but subject to roll diameter’s tire deformation and traction limits) |
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Typical inertial power range (traction limited) |
10 to 1,000+ Hp (1000 / 2.0″deform*μ*2wd) [7 to 746+ KW] limit @ μ = 1.0 |
| Engine (and Absorber) Tachometers | |
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Range |
0 – 32,000+ RPM real-time display (user reconfigurable) |
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Timing reference |
Quartz-crystal calibrated |
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Resolution |
1.0 RPM (typical) |
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Primary RPM signal |
Supports direct connection to most standard vehicle tachometer sources |
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Signal compatibility |
User adjustable trigger voltages − pulse type selectable from ½ to 12 PPR |
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Alternate signal sources |
“Clamp-on” inductive (spark plug, injector, or coil) wire pickup (included) |
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Analog tachometer options |
Optional “cigarette lighter” and optical RPM pickups |
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Digital tachometer options |
Optional OBD-II tachometer interface |
| Dyno Speedometer | |
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Range |
0.0 – 255.0 MPH [0.0 – 410.0 km/h] − real-time digital (user reconfigurable) |
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Timing reference |
Quartz-crystal calibrated |
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Resolution |
Better than 0.1 roll RPM (typical) |
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Standard signal source |
Hall-effect pulse type for RPM/MPH pickup (standard) |
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Signal compatibility |
User adjustable trigger voltages − pulse type selectable from 1 to 360 PPR standard |
| Speed Range (tire deformation limited) | |
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Rolling-road’s tire contact-patch diameter |
~24″ [~61 cm] (see tire manufacturer’s “dyno tire vs. roll-diameter safety guide“) |
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Roll RPM vs. vehicle speed factor |
14.1 RPM per MPH [8.7 RPM per km/h] |
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Digital speed range |
0 – 255 MPH [0 – 410 km/h] real-time display (user reconfigurable) |
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Safe speed range (tire deformation limited) |
8 – 132 MPH (186sr / 2.0″^.5deform) [13 – 212 km/h] (subject to roll diameter’s tire-deformation limits) |
| Approximate Dimensions and Weight | (Do not cast any pits, etc. until system is on site) |
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Roller assembly |
Single wide-roll ~24″ [~76 cm] multi-bearing frame |
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Width |
104″ [264 cm] |
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Length (less pit plate) |
32″ [81 cm] |
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Length (with pit plate) |
46″ [117 cm] |
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Height (at roll/ramp deck) |
24″ [61 cm] |
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Height (overall) |
26½” [67 cm] |
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Weight |
3,300 pounds [1,497 kg] (approximate uncrated) |
| Dynamometer Control Software | |
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Features |
Too many to list here − review DYNO-MAX specification pages and demo CD download |
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Notable trademarks |
DYNO-MAX, Smart Ratio, Smart Record, Smart Load, Smart Braking, Smart Print, etc. |
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Software versions |
DYNOmite EEPROM version # 9.977 plus DYNO-MAX version #10.23 (included) |
| Control Console and PC Options | |
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Computer housing |
Optional enclosed (EMI/RFI resistant) rolling PC cabinet |
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Monitor |
Optional “Pro” console with genuine Intel-equipped Dell PC and 17″ LCD display |
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Wireless remote operation |
Pocket DYNO-MAX™ − wireless Windows Mobile™ PDA control software (included in DYNO-MAX “Pro“) |
| Data Collection Options | |
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Air/fuel ratio monitoring |
Optional 9-19 range AFR exhaust-gas module with portable vacuum pump and tailpipe “sniffer” |
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Dynamometer control software |
Optional DYNO-MAX software packages (see separate specifications page and demo CD) |
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Electronic throttle control |
Optional unit allows PC to throttle road and track driving simulations (dead man or console mount designs) |
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Exhaust-emissions analyzer |
Optional five-gas analyzer (O2, CO, CO2, HC’s, and NOX) via digital DYNO-MAX RS-232 link. |
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OBD-II link |
Optional OBD-II (wired and wireless) interfaces for RPM, MPH, TPI, etc. |
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Temperature monitoring |
Optional oil-temperature “dip stick” thermocouples |
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Weather station module |
Optional weather station provides automatic entry of air temperature, barometric pressure, and relative humidity. |
| Other Options | |
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Above-ground vehicle hoist |
Optional four-post, adjustable track width, lift − with hydraulic power, control module, and safety air locks |
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Self starting |
Optional starter motor and drive kit |
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Ventilation |
Optional 42″ 13,300 CFM (120-volts @ 60-Hertz 1φ) test-bay cooling fan |
