Download the full episode as m4a (m4a is great, it contains chapters, links and images if your player supports them) or mp3 to put on your MP3 player.

There's some controversy in the original Cranklock article comments over whether Chris Toal's latest invention will actually work - in this week's podcast we hear a little from the man himself about the device he believes could revolutionize the cycling world. We'll also hear from Geoffrey Baird in the booth about what he's been enjoying at gizmag.com this week.

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Further reading on the topics covered in this week's podcast (in the order they're mentioned):

Feature Stories:

• Cranklock delivers huge corner speed advantage to cyclists

Quick Wrap:

• 40th anniversary of the first moon landing
• Blind drivers take the steering wheel
• Alphagrip's alternative to the QWERTY keyboard
• Holographic projector turns any surface into a touch screen