8800 4WD EC Chassis Dyno

4WD | Chassis Dynamometers | Eddy Current Dynamometers | Multi-Axle |

Overview

8,800* 4WD eddy-current unit includes: heavy-duty tube-steel frame and 44″-diameter twin-roll assemblies (front and rear axle) – with machined-in “traction grooves,” CNC turned and balanced rolls, air brakes, electrically adjustable wheelbase frame with sliding diamond-tread deck plates, floor anchors, vehicle tie downs, dual eddy-current absorbers and controller with overdrives, mechanically-linked (shaft driven) AWD-axle synchronization, dual S-beam load cells, DYNOmite-Pro data-acquisition computer, inductive RPM pickup, DYNO-MAX software, auto-load control, 28-channel data harnesses, temperature thermistor, banner, accessories package, and manual (less PC).

Specs

DYNOmite Data-Acquisition Computer:

Expandable, surface-mount board system
120-volt 60-Hz, 240-volt 50-Hz, or 12-volt DC
CE and/or UL approved (per locale)
Pro PC-based 28, 56, or 112+ channel capable board sets, require DYNO-MAX software
Lite 3-channel (upgradeable to Pro above)
Up to 1,000 recordings per second (per channel)
Quick-disconnect data harness
Non-volatile setup memory
Smart-Record™ automated recorder triggering
RS-232 and USB ports – for output to a PC with DYNO-MAX software options

Torque Transducer:

1% of full-scale accuracy – typical
Environmentally sealed S-beam load cell
Semi-automatic calibration of zero offset
Temperature compensated

Industry’s claimed flash roll-power range*

*Power capacity is unlimited, but subject to roll diameter-induced tire deformation (safety) and traction (efficiency) limits. Continuous capacity depends on selected absorber and test speeds. Higher torque transfer requires tie downs.
8½” 2WD = 850 Hp (634 KW)
12″ 2WD = 1,200 Hp (895 KW)
13″ 2WD = 1,300 Hp (969 KW)
20″ 2WD = 2,000 Hp (1,492 KW)
24″ 2WD = 2,400 Hp (1,790 KW)
30″ 2WD = 3,000 Hp (2,237 KW)
44″ 2WD = 4,400 Hp (3,281 KW)
60″ 2WD = 6,000 Hp (4,474 KW)
13″ 4WD = 2,600 Hp (1,939 KW)
24″ 4WD = 4,800 Hp (3,580 KW)
30″ 4WD = 6,000 Hp (4,474 KW)
44″ 4WD = 8,800 Hp (6,562 KW)
60″ 4WD = 12,000 Hp (8,948 KW)

Industry’s claimed engine-power range*

*Power capacity is unlimited, but subject to roll diameter-induced tire deformation (safety) and traction (efficiency) limits. Continuous capacity depends on selected absorber and test speeds. Higher torque transfer requires tie downs.
8½” 2WD = 1,062 Hp (792 KW)
12″ 2WD = 1,500 Hp (1,119 KW)
13″ 2WD = 1,625 Hp (1,211 KW)
20″ 2WD = 2,500 Hp (1,864 KW)
24″ 2WD = 3,000 Hp (2,237 KW)
30″ 2WD = 3,750 Hp (2,796 KW)
44″ 2WD = 5,500 Hp (4,101 KW)
60″ 2WD = 7,500 Hp (5,593 KW)
13″ 4WD = 3,250 Hp (2,424 KW)
24″ 4WD = 6,000 Hp (4,474 KW)
30″ 4WD = 7,500 Hp (5,593 KW)
44″ 4WD = 11,000 Hp (8,202 KW)
60″ 4WD = 15,000 Hp (11,186 KW)

SAE (roll-diameter-based contact-patch ratio) Tire-Safety Hp Capacity:*

*Power capacity is unlimited, but subject to roll diameter-induced tire deformation (safety) and traction (efficiency) limits. Continuous capacity depends on selected absorber and test speeds. Higher torque transfer requires tie downs.
8½” 2WD = 530 Hp (1000 / 3.8″deform*μ*2wd)
13″ 2WD = 740 Hp (1000 / 2.7″deform*μ*2wd)
20″ 2WD = 900 Hp (1000 / 2.2″deform*μ*2wd)
24″ 2WD = 1,000 Hp (1000 / 2.0″deform*μ*2wd)
30″ 2WD = 1,350 Hp (1000 / 1.5″deform*μ*2wd)
44″ 2WD = 1,650 Hp (1000 / 1.2″deform*μ*2wd)
60″ 2WD = 2,000 Hp (1000 / 1.0″deform*μ*2wd)
13″ 4WD = 1,480 Hp (1000 / 2.7″deform*μ*4wd)
24″ 4WD = 2,000 Hp (1000 / 2.0″deform*μ*2wd)
30″ 4WD = 2,700 Hp (1000 / 1.5″deform*μ*4wd)
44″ 4WD = 3,300 Hp (1000 / 1.2″deform*μ*4wd)
60″ 4WD = 4,000 Hp (1000 / 1.0″deform*μ*4wd)
Note: μ = 1.00 (coefficient of friction for typical 24″-diameter rubber tire on grooved steel roll).

SAE (roll-diameter-based contact-patch ratio) Repeatable-Hp Limit:*

*Power capacity is unlimited, but subject to roll diameter-induced tire deformation (safety) and traction (efficiency) limits. Continuous capacity depends on selected absorber and test speeds. Higher torque transfer requires tie downs.
8½” 2WD = 265 Hp (1000 / 3.8″deform*μ*2wd*50%
13″ 2WD = 370 Hp (1000 / 2.7″deform*μ*2wd*50%)
20″ 2WD = 450 Hp (1000 / 2.2″deform*μ*2wd*50%)
24″ 2WD = 500 Hp (1000 / 2.0″deform*μ*2wd*50%)
30″ 2WD = 675 Hp (1000 / 1.5″deform*μ*2wd*50%)
44″ 2WD = 825 Hp (1000 / 1.2″deform*μ*2wd*50%)
60″ 2WD = 1,000 Hp (1000 / 1.0″deform*μ*2wd*50%)
13″ 4WD = 740 Hp (1000 / 2.7″deform*μ*4wd*50%)
24″ 4WD = 1,000 Hp (1000 / 2.0″deform*μ*2wd*50%)
30″ 4WD = 1,350 Hp (1000 / 1.5″deform*μ*4wd*50%)
44″ 4WD = 1,650 Hp (1000 / 1.2″deform*μ*4wd*50%)
60″ 4WD = 2,000 Hp (1000 / 1.0″deform*μ*4wd*50%)
Note: μ = 1.00 (coefficient of friction for typical 24″-diameter rubber tire on grooved steel roll).

Steady-State Power (absorption units):

Actual load capacity depends on selected (AC, eddy-current, or water-brake) absorber and roll speed (including any overdrive ratio). See online load charts for curves.

Engine and Absorber Tachometers:

0 – 32,000+ RPM display
Quartz-crystal calibrated
RPM pulse type is selectable from ½ to 12 PPR
Clamp-on inductive pickup (standard)
Optional “cigarette lighter” RPM pickup
Optional OBD-II tachometer interface

Dyno Speedometer:

0.0 – 255.0 MPH display
Magnetic RPM/MPH pickup (standard)
MPH Range (tire-deformation limited): **
8½” tandem rolls (speedo tester) = 5 – 125 MPH**
13″ tandem quad rolls (linked) = 7 – 160 MPH**
20″ wide roll = 7 – 160 MPH**
24″ wide roll or 24″ twin rolls = 8 – 180 MPH**
30″ wide roll = 10 – 200 MPH**
44″ twin rolls = 15 – 225 MPH**
60″ twin rolls = 18 – 250 MPH**

MPH Range (tire-deformation limited): **

**Range is subject to tire’s speed rating (sr) and roll diameter-induced tire deformation (safety) limits.
8½” tandem rolls = 5 – 95 MPH (186sr / 3.8″^.5deform)
13″ tandem quad rolls (linked) = 7 – 113 MPH (186sr / 2.7″^.5deform)
20″ wide roll = 7 – 125 MPH (186sr / 2.2″^.5deform)
24″ wide roll or 24″ twin rolls = 8 – 132 MPH (186sr / 2.0″^.5deform)
30″ wide roll = 10 – 137 MPH (186sr / 1.5″^.5deform)
44″ twin rolls = 15 – 166 MPH (186sr / 1.2″^.5deform)
60″ twin rolls = 18 – 186 MPH (186sr / 1.0″^.5deform)

Load Control (absorption units only):

Electronic auto-load control (with road simulation)
Integral drag-race tree, with patent-license options

Absorber (except inertia-only models):

Adjustable load – (bidirectional) with AC, eddy-current, or toroid water-brake absorber options
Dual heavy-duty bearings – Zerk grease fittings

Rolls:

Machined in “traction grooves” for maximum grip and tire life under high-power testing
Medium inertia (to allow absorber simulations)

Roller Frame:

Heavy-duty steel frame, leveling pads or anchors, greaseable bearings, pit-plate or ramp options
Tandem quad-roll 8½” (dolly/pit/ramp options)
Tandem quad-roll 13″ (caster/pit/ramp options)
Wide-roll 20″ (with integral anchoring feet)
Twin-roll 24″, 44″, or 60″ (tie down – high speed)
Wide-roll 24″ or 30″ (dually model is 96″ wide)
AWD multi-twin linked 13″ rolls (pit/ramp option)
AWD 13″, 30″, or 44″ upgrade, 89″ – 130″ range (or longer) electric wheelbase adjustment

Axle Weight Capacities:

8½” quad roll (speedo tester) = 8,000 lbs (per axle)
8½” quad roll (road-load simulator) = 8,000 lbs (per axle)
13″, 24″, 30″, 44″, and 60″ twin roll = 10,000 lbs (per axle)
20″ wide roll = 6,000 lbs (per axle)
24″ or 30″ wide roll = 8,000 lbs (per axle)

Approximate Dimensions and Weight:

8½” 2WD (speedo tester) tandem roll (less ramps)
102″W x 38″L x 13″H – 1,550 lbs
8½” 2WD (road-load simulator) tandem roll (less ramps)
120″W x 38″L x 20″H – 1,900 lbs
13″ 2WD tandem quad roll (absorber, less ramps)
133″W x 34″L x 18″H – 3,200 lbs
13″ 2WD tandem HD quad roll (absorber, less ramps)
133″W x 34″L x 18″H – 4,100 lbs
20″ 2WD wide roll (absorber, less ramps)
120″W x 35″L x 21″H – 3,500 lbs
24″ 2WD wide roll (inertia only, less lift or pit plate)
104″W x 32″L x 24″H – 3,300 lbs
24″ 2WD twin roll (absorber, less lift or pit plate)
89″W x 52″L x 25″H – 3,700 lbs
30″ 2WD wide roll (inertia only, less lift or pit plate)
112″W x 38″L x 30″H – 4,800 lbs
44″ 2WD twin roll (absorber, less lift or pit plate)
89″W x 54″L x 48″H – 5,500 lbs
60″ 2WD twin roll (absorber, less lift or pit plate)
112″W x 70″L x 64″H – 6,500 lbs
13″ 4WD tandem quad-roll sets (absorbers, less ramps)
133″W x 163″L x 18″H – 8,700 lbs
44″ 4WD twin-roll sets (two absorbers, less pit plate)
91″W x 185″L x 48″H – 13,000 lbs

Control Console and PC Options:

Enclosed (EMI resistant) rolling PC cabinet
Pocket DYNO-MAX – wireless control software
“Pro” Console with PC and 17″ LCD display
Data Collection Options:
5-gas analyzer with digital RS232 interface
Air/fuel ratio exhaust gas module (with pump)
Atmospheric “Weather Station”
DYNO-MAX “Pro” software
OBD-II interfaces (RPM, MPH, TPI, etc.)
Oil temperature “dip stick” thermocouples

Other Options:

42″ 13,300 CFM test bay cooling fan (120 volt)
Above ground mounting 4-post lift kit
Starter motor and drive kit

Model Number: #037-8800-1K

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