1. Rotary Racer Renovatio Greenpower National Champions 2009

2. What is Greenpower ? Greenpower is a young people engineering project, incorporating engineering, team building skills and motor sport dynamics Greenpower involves Design, Manufacture and Racing of electrically powered cars Greenpower brings school pupils and parents together

3. Greenpower races are split into leagues: - Goblins (primary school years 5 & 6) - Formula 24 (secondary school years 7 – 11) - Formula 24+ (6 th form years 12 & 13) The Formula 24 rules define a particular electric motor and a set of 4 car batteries as the power source. F24 races run for 4 hours with 5 pit stops for driver and battery changes Around 300 schools compete across the UK How does Greenpower Work ?

4. Team photograph after victory at the western heat at Castle Combe Rotary Racer 7 Rotary Racer 7 was the first of our cars to have a nose cone, which was made out of impact resistant foam It was also the first car to incorporate our car computer/motor speed controller, which helped control how many amps the car was using It is also our only car to date that has had a model tested in a real wind tunnel!

5. The team built the new car RR7, ready for the first race at the Corporate Challenge event. Here it came ninth. At the next race, the Castle Combe heat, the team achieved 1 st place At the Dunsfold Park heat, the team achieved 1 st place – again! At the Goodwood National Final, Rotary Racer finished 2 nd place out of 75 entrants Rotary Racer 2008 Season

6. Aerodynamics were crucial. We used a virtual wind tunnel to develop our ideas We used a chassis of aluminium tubing and plastic bungs for the framework because this structure is both light and strong We used steel bolts to hold the structure together The steering, motor support, and rear sub-frame is made from steel because it is very strong The roll-bar is also made from steel tubing Design

7. The bodywork is made mostly out of insulation foam as it is cheap, and easy to shape. The bonnet and bottom is made from thin plywood. The roll bar faring is made from flexible foam that is easy to shape and glues well. There is a foam nose cone that can also act as a shock absorber. The seating for the driver is a canvas hammock suspended between two tubes. There Is foam under the seat in-case the driver hits the floor The team made most of the components. Design continued

8. Design The pupils and parents designed, built and tested most of the car's components CAD drawings were used

9. Racing action from the 2009 National Final at Goodwood Motor Circuit Rotary Racer 8 This car also had a foam nose cone… as well as a foam outer shell! The aerodynamic testing for this car was done on a computer, using virtual models of the car in a virtual wind tunnel This car also used the on- board car computer/motor speed controller, as well as a car horn we could program to play different tunes Telemetry

10. At the Corporate Challenge race at Goodwood, the team came 4 th with RR7 After the Corporate Challenge, the team finished the new car RR8, and renamed the car “Rotary Racer Renevatio”, Renovatio being Latin for Rebirth In the Goodwood heat (the first outing for RR8) the team finished 2 nd to R-Pods SSC. At both the Castle Combe and Dunsfold heats, Rotary Racer achieved 1 st position finishes. At the National Final at Goodwood, the team battled for the lead throughout. At the end we took the chequered flag as race winners and were crowned 2009 UK National formula 24 champions! Rotary Racer 2009 Season

11. Facts Building costs £400 (£500 of components from previous car) Competing costs about £340 per year (Tyres, Batteries etc) Peak speed about 64 Km/hour (40 MPH) Average speed about 52 Km/hour (33 MPH) Equivalent Petrol Consumption Castle Combe (24.5 Amps, 116 Miles) = 1994 MPG Dunsfold (17.4 Amps, 100 Miles) = 2421 MPG Goodwood Final (23.7 Amps, 120 Miles) = 2132 MPG Electronics Computer calculates power level 10 times per second Motor switched on/off 20,000 times per second

12. Making the car more efficient to run on smaller batteries Improved aerodynamics Reducing rolling resistance Improved team presentation Make the car safer The Future

13. GPS timing system Driver intercom system Replace retired batteries and motor Better car building facilities Future continued

14. www.greenpower.beamweb.co.uk Thank you for listening Many thanks to all of our sponsors and supporters including: Rotary Club, Chipping Sodbury Towns Land Trust, Chipping Sodbury Shipp Engineering Ltd CTEK Chargers Parsons Brinckerhoff BLD Group Avonside Insulation Supplies Kemble Airfield Royal Air Force Beam Ltd

15. Any Questions ?