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Old 09-12-2009, 05:35 PM   #1
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Default I need your help!

Hey guys,

I am a grad student at Stanford University and am working on a device for motorcycle riders - it harvests energy from the rotation of your wheels to pump air into your tires, at a rate that is high enough to triple the riding time you would normally have before your tire goes flat from a puncture (while riding at about 55mph or above). The device would likely come with a warning light that you mount on your cluster, that tells you if a leak occurs, which tire it is, and if your tire pressure is below a critical point (stop riding immediately).

There would be two devices per bike, one for each wheel, that you would screw onto the valve stem. Each device is about the size of a 0.75" tall stack of quarters. The devices would weigh about 1.5-2 oz each, and would come with a counterbalance weight that you would put on the opposite side of the wheel to keep it balanced (or possibly an option for dyna beads instead).

At this point, I kinda feel like I am in a vacuum using only my own knowledge of motorcycles and riding to guide my engineering process, and would like to include alot more people in my thought process. First off, would you guys be willing to take a minute to complete a quick survey (no personal info needed) and answer some questions related to this device? If so, just copy and paste the following link into your browser window:


Second off, if you have any suggestions, concerns, or anything of the like, please post so we can get a dialogue going!

Your help and advice will be greatly appreciated!

Happy riding,

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Old 09-12-2009, 06:15 PM   #2
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If the device adds unsprung weight then I don't see any advantage to it. How hard is it to check tires?
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