Spurious Electromagnetic Field

I have a Cateye wireless computer, (speedometer), on my bicycle.

One particular intersection in town will drive the computer nuts. It has a maximum speed function that will read in excess of 70mph and the unit seems to be rapidly changing functions. I can assure you that I'm not that fast.

It will take a fairly strong electromagnetic field to effect that computer. Fortunately I didn't notice any change with my pacemaker while sitting there waiting for the light to change..

2 Comments

70 mph

by mike thurston - 2010-07-31 02:07:06

Now 70 mph would be scary on a bike. I have never broken 40mph (38.6 is my fastest) and that makes me nervous. A common piece of electronics like a bike computer only has to meet the lowest standards. This equates to it only has to turn on once. Medical devices fortunately are in the most strigent category and would not be affected like the bike gizmo. Having worked in electronics for many years now I am amazed at the craftmanship in a ICD/PM. I certainly hope the technicians are paid well because it must be a tough job. Maybe there is a lot of automation involved. Anyway biker72 post up when you crank those pedals to 70 mph :)

No Chance

by biker72 - 2010-07-31 07:07:46

I have gone a little over 40mph, downhill with a tailwind. I don't know how much over 40mph because I was drafting just inches behind a tandem over a set of fairly steep rollers. At that speed, with the tailwind, I could almost coast up the next hill.

You know you're wired when...

Muggers want your ICD, not your wallet.

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