allpar, the Chrysler - Dodge - Plymouth - Jeep site

The Dodge Tomahawk Concept Motorcycle

dodge tomahawk motorcycle

The Tomahawk is a Viper V-10 based motorcycle, a 500 horsepower engine with four wheels beneath it. The engine breathes through twin throttle bodies mounted right up front (the two round things above the front tires are). While the Tomahawk has the same number of tires as a car, it keeps the motorcycle form factor otherwise.

dodge tomahawk pictures

logo - tomahawkChrysler sold nine replicas through Neiman Marcus, for $555,000 each. The motorcycles cannot be driven on public roads. A spokesman told Reuters they were meant as rolling sculptures, presumably to avoid legal liability. They are driveable - just not (legally) on public roads.

The rear wheel drive machine uses monocoque construction; the engine is a stressed member. The body is made of billet aluminum.

another photo of the tomohawk from dodgeThe Tomahawk concept is an awesome-sounding machine; we saw it started and revved. Clouds of blue smoke vied for attention with the throaty rumble of the mighty V-10, and hitting the gas visibly opened the twin throttle body blades up front where the headlight would normally be. Though deeper and more rumbling than most motorcycles, it did not seem to be louder overall - just deeper, with no shrill overtones.

Wolfgang Bernhard, Chrysler's first mate at the time, was said to be enthusiastic about that project, so much so that hundreds were projected to be built at under $200,000 each (probably below breakeven). They reportedly cost Chrysler over $100,000 to build (the work is outsourced), not including engineering costs.

The Dodge Tomahawk can reach 60 miles an hour in about 2.5 seconds, and has a theoretical top speed of nearly 400 mph. Each pair of wheels is separated by a few inches and each wheel has an independent suspension. Bernhard said four wheels were necessary to handle the power from the engine.

Car reviews and buyer advice

No reviews possible. No buyer advice feasible.

Is it a motorcycle?

Donald Poindexter, Jr., noted that the Tomahawk isn’t really a motorcycle; the National Highway Traffic Safety Administration proclaims that a motorcycle can have no more that 3 wheels on the ground during normal operation. Donald wrote,

“For the Tomahawk to have been sold in the U.S. for road use, it would have had to pass all of the automobile safety standards. Had the engineers replaced one of the tire pairs (either front or back) with a single tire (for a total of three), it would have been a motorcycle, although I think the lights might have been in violation of the regulations.”

The Tomahawk, then, was a concept motorcycle, but does not meet the legal requirements to be classified as a motorcycle by the U.S. government, or to be driven on the street — which may be one reason why it was never produced, save for nine copies sold by Neiman-Marcus for use only on private roads (or, as they phrased it, as automotive sculpture).

Viper V10 engine

  • 500 bhp (372 kW) @ 5600 rpm (60.4 bhp/liter); 525 lb.-ft. (712 Nm) @ 4200 rpm
  • 10-cylinder 90-degree V-type, liquid-cooled, 505 cubic inches (8277 cc)
  • 356-T6 aluminum alloy block with cast-iron liners, aluminum alloy cylinder heads
  • Bore x Stroke: 4.03 inches x 3.96 inches (102.4 x 100.6)
  • Two pushrod-actuated overhead valves per cylinder
  • Roller-type hydraulic lifters
  • Sequential fuel injection with individual runners
  • Compression Ratio: 9.6:1
  • Max Engine Speed: 6000 rpm
  • Fuel: Unleaded gasoline, 93 octane (R+M/2)
  • Dry sump oil system takes 8 quarts of oil
  • Cooling: Twin aluminum radiators mounted atop engine intake manifolds, force-fed from front-mounted, belt-driven turbine fan. Takes 11 quarts of antifreeze.
  • Exhaust: Equal-length tubular stainless steel headers with dual collectors and central rear outlets

Suspension, brakes, tires, and wheels

Front suspension: Outboard, single-sided parallel upper and lower control arms made from polished billet aluminum. Mounted via ball joint to aluminum steering uprights and hubs. Five degrees caster. Single, adjustable centrally located coil-over damper (2.25-inch coil with adjustable spring perch); pullrod and rocker-actuated mono linkage. Center-lock racing-style hubs.

Rear suspension: Hand-fabricated box-section steel inboard swing arms, incorporating hydral-link lockable recirculating hydraulic circuit parking stand. Single adjustable Koni coil-over damper (2.25-inch coil with adjustable spring perch); pushrod and rocker-actuated mono linkage. Center-lock racing-style hubs

Front brakes: 20-inch perimeter-mounted drilled machined stainless steel rotors, one per wheel. Two four-piston fixed aluminum calipers per wheel (16 pistons total), custom designed. Blue anodized caliper finish. Hand-activated.

Rear brakes: 20-inch perimeter-mounted drilled cast-iron rotors, one per wheel. One four-piston fixed aluminum caliper per wheel (8 pistons total), custom designed. Blue anodized caliper finish. Foot-activated.

Tires and wheels: Billet aluminum discs, asymmetrical, twin 20x4 front, twin 20x5 rear, with custom made Dunlop symmetrical tires (P120/60R20 in front, P150/50R20 in back).

Performance

0-60 mph: 2.5 seconds
Top Speed: 300+ mph (est.)

V10 Dodge motorcycle concept

Electrical

Alternator: 136-amp high-speed
Battery: Leak-resistant, maintenance-free 600 CCA
Lighting: Headlights consist of 12 five-watt LEDs, front, with beam-modifying optics and masked lenses. Eight LEDs, rear. Headlamps articulate with wheels.

Dodge Tomahawk concept motorcycle

Transmission

Manual, foot-shifted, aluminum-cased two-speed, sequential racing-style with dog ring, straight-cut gears
Gear Ratios: 1st 18:38; 2nd 23:25
Clutch: Double-disc, dry-plate with organic friction materials, hand lever actuated with assist
Final drive: Dual 110-link motorcycle-style chains

Front Sprockets: 14 teeth
Rear Sprockets: 35 teeth

Steering

Dual-hub center type steering. Linkage uses rocker arm and push/pull rod with roller bearings. Billet aluminum steering yoke with aluminum grips and billet levers. Steering Lock: 20°; Lean Angle: 45°

Dimensions

Length: 102” •  Width: 27.7” •  Height: 36.9”
Wheelbase: 76”
Seat Height: 29”
Weight: 1,500 lb • Weight Dist: 49F/51R
Track: Front: 8.75” • Rear: 10”
Fuel: 3.25 gal
Also See:

Dodge Tomahawk


venomConcept cars are often made so a car’s feel can be evaluated, problems can be foreseen, and reactions of the public can be judged. Some concepts test specific ideas, colors, controls, or materials — either subtle or out of proportion, to hide what’s being tested. Some are created to help designers think “out of the box.” The Challenger, Prowler, PT Cruiser, and Viper were all tested as production-based concepts dressed up to hide the production intent.


We are not responsible for the consequences of actions taken based on this site, and make no guarantees regarding validity, accuracy, or applicability of information, predictions, or advice of any sort. Please read the terms of use and privacy policy. Copyright © 1994-2000, David Zatz; copyright © 2001-2014, Allpar LLC (except as noted, and press/publicity materials); all rights reserved. Dodge, Jeep, Chrysler, Ram, Plymouth, and Mopar are trademarks of Fiat Chrysler Automobiles.