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Human Powered Vehicle Association

Revised Prize Rules 7/19/03

Regulations and Conditions
The Dempsey - MacCready Prize
for the Human Powered Hour Record

1.0 Introduction

A cash prize is offered by Dempsey World Record Associates Inc. (the Sponsor), under conditions specified by the Human Powered Vehicle Association, to the first single rider human powered land vehicle that can equal or exceed 90 km in one hour (55.924 mph). Smaller supplemental awards are offered to any competitor who breaks the currently recognized record by at least 3%, at any time during the period of the Prize.

2.0 General Conditions

2.1 Prize Name

The prize shall be known as The Dempsey - MacCready Prize For The Human Powered Hour Record.

2.2 Prize Duration

The date the prize was officially announced in the HPV News, was May 31, 1999. The competition shall continue until the Major Prize is (finally awarded (see 3.1).

2.3 Winning Distance

To win the Major Award outright, an HPV must cover 90 kilometers (55.923 miles) in one hour from a standing start.

3.0 Prize

3.1 Major Award.

$25,000 shall be awarded to the ultimate winner when a human powered vehicle equals or exceeds 90 km in one hour under the rules of the Dempsey-MacCready Prize.

3.2 Minor Awards.

In the event a vehicle breaks the then existing HPV Hour Record by at least 3%, but does not reach 90 km, a smaller prize of $2,000 will be awarded each time this occurs. If the existing HPV Hour Record is broken during an organized competitive event, by more than one HPV, a $2,000 award will be given only to the fastest competitor. Minor awards shall not exclude the ultimate winner. Awards of $500 shall be given to the fastest HPV hour competitor in the yearly Human Powered Speed Championships (HPSC). The $500 awards shall terminate when and if the Major Award is granted.

4.0 Vehicles

4.1 General

A single rider HPV only is allowed. One rider only is permitted during the one hour competition. One HPV only may be used during the competition.

4.2 Power

The HPV must be driven solely by human power. Steering and balance of the vehicle must be under direct control of the rider except at the start (6.1). Rail guided, wire guided or other such HPV systems are not permitted. Non-human power sources (batteries, solar cells, etc.) are permitted only for powering sensors, displays, communication equipment and lights. Control devices, cooling fans, powered aerodynamic devices or other components must be human powered.

4.3 Energy Storage

No device which stores energy over more than one input power cycle (e.g. leg stroke) or which releases energy under control of the rider may be used.

4.4 Integrity

The HPV may not jettison any part(s) after beginning motion, the vehicle must complete the entire run with all of the equipment it starts with. The rider must ride on or in the vehicle.

4.5 Safety

Vehicles must have a safe means of stopping. Vehicles must have adequate stability and visibility. Dangerous protrusions or other unsafe design features must be corrected before any record attempt. Riders must wear adequate head protection as defined in the competition rules of the HPVA. If the HPV or its operator is judged unsafe by the observers, they may bar it from competition. The vehicle must be available for inspection by the observers at least 24 hours in advance of the competition.

4.6 Dimensions

When completely assembled and vertically oriented as when traveling straight on a level road, vehicles must fit in a box 1.5 meters high, 1 meter wide and 3.1 meters long. Any number of wheels are legal. With the exception of the size restrictions, HPVs must meet the vehicle competition regulations of the HPVA.

5.0 Course Requirements

5.1 Circuit Course

The prize attempt must be on a land circuit course closed to automobile or other vehicle traffic. The HPV must make at least one complete circuit of the course and finish no more than 10% of the final one hour distance away from the start.

5.2 Distance Covered

The length of the course shall be surveyed following a minimum distance line along the course (for example: along the inside of curves). The survey shall be done by a registered land surveyor, registered civil engineer, or someone with equivalent training. The survey shall be accurate to a minimum of one part in 1000. The method used in the survey must be approved by the Prize Committee. The method of determining the final distance shall be approved by the Prize Committee. The survey for final distance may come after the event.

5.3 Grade

There are no grade or slope restrictions.

5.4 Wind

There are no wind restrictions.

5.5 Elevation

There are no elevation restrictions.

6.0 Competition Rules

6.1 The Start

The start shall be from a stationary position. One assistant is permitted to balance the vehicle at the start, for no more than 15 meters. The assistant may not push the vehicle.

6.2 Drafting, Chase Cars

No more than one competitor shall be permitted on the course at one time during a sanctioned record attempt. Record attempts, however, can run sequentially. If an HPV is not visible from the start at any time during the circuit, then a chase vehicle must follow at all times. No more than one chase car may be permitted at any time. No drafting or any other action that could be interpreted as a competitive aid by the chase car is permitted. The chase car must follow directly behind or behind and to one side of the HPV and approach no closer than 30 meters from the rear of the HPV, except during the last 20 seconds of the hour. An official observer must ride in the front seat of the chase car - the observer may be the driver, however, in that case, at least two persons must be in the car. At the discretion of the Prize Committee, this rule may be modified to permit multiple competitors on the same track.

6.3 Official Observers

At least two official observers, who are appointed or approved by the HPVA, must be present during any prize attempt.

6.4 Timing

One observer is to act as the official timer. Official timing clocks shall be accurate to five seconds in 24 hours. All official clocks shall run continuously for one hour during the competition. Individual lap times are to be recorded. At least two clocks shall be on board the chase vehicle (one official, one back up), and one clock shall remain at the start. Radio communication of the time signal may be used to advise track officials, but only direct observation of the clock by an official observer in the pace car shall be used to time the hour.

7.0 Eligibility

Any member of the HPVA is eligible to compete, regardless of the country of origin. As a minimum, HPVA membership will be required of the rider, the vehicle owner and the crew chief in charge of the prize attempt. The record attempt may occur in any country.

8.0 Competition Expenses

The record attempt team is responsible for the cost of the timing equipment, venue costs, and actual expenses (related to the attempt) of two official observers including travel, lodging, food and phone calls. The timing officials can waive payment of these expenses at their discretion.

9.0 Prize Committee

9.1 Membership

The Prize Committee shall consist of a director and at least two other members of the HPVA to be appointed by the Board of Directors of the HPVA. Names of the Prize Committee members are available upon written request to the HPVA. They shall set policy on rules and the conduct of the prize competition, and act as an appeals board. The committee has the right to exclude any vehicle from competing and/or the use of any course, which in their opinion violates the intent of the prize rules. Should members of the Committee resign or decease, the Prize Committee shall have the right to appoint replacement members upon majority vote of the remaining members of the Committee.

9.2 Rules Interpretation

The interpretation of these rules and any other matters regarding the Prize competition, rests entirely with the Prize Committee and its designated observers.

9.2 Protests or Appeals

All prize attempts will be published in the HPV News. Any protests or appeals must be received in writing by the Prize Committee at the official HPVA address within sixty (60) days of the mailing date of the HPV News issue in which the results were published. Protests or Appeals shall state specifically the basis for the challenge. In case of a protest or appeal, the entrant may request a hearing with the Prize Committee. The decision of the Prize Committee regarding any protests or appeals shall be final.

10.0 Documentation

10.1 Application for Prize Attempts

Application to the Prize Committee by prospective competitors shall be made at least 90 days in advance of the actual prize attempt. The application must be approved by the Prize Committee in advance of the attempt. The application shall include written permission to use the course by the authorities who govern the use of the course. The application shall be accompanied by an advance entry fee of $100. The fee will be used to defray the expenses of administration. Applications shall be in English.

Competitors who plan to utilize unique or unconventional vehicle designs or courses are encouraged to submit their plans for approval before proceeding with preparations for new record attempts. The prize committee will maintain strict confidentiality regarding any such inquiries.

10.2 Application for Prize

A written application for the Prize must be compiled by the entrants and submitted to the official observers within 30 days of Prize attempts. If approved by the observers, it will be then submitted to the Prize Committee. This submittal shall include:

10.2.1 A brief report summarizing the record attempt

10.2.2 The date, time, location, and distance of the successful attempt.

10.2.3 The names of the vehicle builder, designer, rider and the name of the person(s) or organization applying for the prize.

10.2.4 A publication quality photograph of the vehicle, rider and team.

10.2.5 A statement that all of these Rules have been complied with signed by the applicant and the observers.

10.2.6 Evidence of time clock calibration.

10.2.7 Evidence of course measurement and final distance measurement.

11.0 Insurance

Each team shall be covered by liability insurance of at least $1,000,000 during the period of the actual prize attempt. The insurance shall cover the Sponsor, team members, riders, observers, the course owners/operators, the Prize Committee, and the Board of Directors of the HPVA. Proof of insurance shall be furnished to the Prize Committee or their representatives before any record attempt can take place. Insurance may be obtained at standard event rates through the HPVA. Any approved attempt on the record shall be considered an officially sanctioned event of the HPVA.

12.0 Correspondence

Applications and Prize attempt submittals and any other correspondence regarding the Prize should be sent to the Dempsey - MacCready Prize Committee, HPVA, 9539 N. Old Stage Road, Weed, CA 96094.

Original Rules 3/25/99
Revised Rules 7/19/2003

The Dempsey-MacCready Prize Committee as of 7/19/2003

Allan Abbott, M.D.
Bill Gaines
Paul MacCready, Ph.D.
Doug Milliken
Chester Kyle, Ph.D.
David Gordon Wilson, Ph.D.

Contact: Webmaster

Copyright © 2003 HPVA

Rev. 24-Jul-2003 bhw;