Transmission aids electric car development
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Transmission Developments product story
Edited by the Engineeringtalk editorial team
Jan 8, 2009
Pupils at Two Rivers High School are using Synchroflex AT5 Gen III belts and precision pulleys supplied by Transmission Developments (Transdev) for their Greenpower Formula 24 electric racing car.
The team has won five awards in three races in its inaugural year, culminating in Best Newcomer in the fiercely contested National Final held at Goodwood on 19 October 2008.
The electric car, called Prometheus, was developed by students from the Tamworth schools' TRS Racing club, which was set up to channel pupils with an interest in practical work towards achievable projects and build technical skills and self confidence.
The IMechE sponsored Greenpower competition, now in its 10th year, involves secondary school students building an electric car under design guidelines that include the use of the same 24V DC motor and battery power pack as other entrants, but with flexibility for the power transmission system and chassis construction.
Each race involves covering the maximum distance over a four-hour endurance period, with each team comprising six drivers and six pit crew.
The TRS Racing team's achievement is made even more remarkable by the fact that Two Rivers is a special needs school catering for pupils between 11 and 18 with mild to severe learning difficulties, and the only special needs school from 420 teams and 75 finalist in the 2008 competition.
TRS Racing has enjoyed considerable support from LDV Vans as well as Lola Racing and Transdev, whose technical department has given application assistance for the design of the transmission.
Lola has even helped with weight-saving composite technology used for the chassis.
Several local companies also provided help through work experience programmes and pupils have been able to apply manufacturing skills they could not have gained at the school without their help.
The drive train used on Prometheus is a single stage design based on Synchroflex high-efficiency Gen III AT5 belts with a 5mm pitch and 25mm width, supplied with matching precision pulleys in aluminium with zinc-plated steel flanges.
Gen III endless timing belts feature a trapezoidal tooth form and are manufactured with closer S and Z wound high-grade tensile steel tension members in a wear-resistant polymer loaded polyurethane.
In comparison to other manufacturer's timing belts the range provides neutral belt tracking and reduced pulley friction and is designed to offer longer life, reduced noise and maintenance free operation.
Gen III is available in AT3, AT5, AT10 and ATP10 pitch variants in seven standard belt widths from 16mm to 150mm, with special widths to order.
Standard lengths are up to 3800mm with increased lengths on request.
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