These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Ringing True (14-16)

This resource, from Siemens, looks at the function of a wheel bearing on trains and the importance of finding out whether replacement is needed. Students consider the cost implications of replacing bearings before it is necessary and the cost and safety implications of not replacing them in time. Traditionally, wheels were tapped and the pitch of the note produced would indicate whether the wheel was worn. Students find out about the RailBAM system, which records the sound made by passing trains and compares it with the sound of a train with bearings in good working order. If there is a difference the system notes this and issues a warning.

Show health and safety information

Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.

Information on the creators and permitted use of this resource is covered by the Category Three Materials - Community Resources section in STEM Learning’s Terms and conditions