A recently answered FAQ states, with regard to the Maintainability Challenge, that ‘The wheelset when removed must consist only of the wheels and axle plus axle boxes, brake disks and the final part of the traction drive for example agear/pulley or sprocket where attached to the wheelset. Other parts of the traction drive including the traction motor must be disconnected from thewheelset.’
Our team have designed a gearbox where the motor and axle are integral parts, making detaching the motor from the axle impossible outside of a workshop. The motor would be disconnected electrically and removed with the wheelset for the maintainability challenge.
It is not acceptable for the traction motor to be part of the wheelset removed in the Maintainability Challenge. The only non-rotating parts of the wheelset permitted are the axelebox casings (including bearing outer race, etc.).
Separate note to this team on this point: Separate note to teams on this point: The application of this rule has not changed and no previous team has been permitted to remove a traction motor together with the wheelset as one part. Where the design of locomotives has required the removal of a traction motor initially, such as the removal of a bogie which contains an integrated traction motor, then a driven wheelset has still needed to be removed from the bogie before the time is stopped.