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-   -   Cateye Astrale gone crazy? (http://www.bikeforums.net/general-cycling-discussion/167452-cateye-astrale-gone-crazy.html)

Wannabe 01-18-06 10:33 PM

Cateye Astrale gone crazy?
 
Today, I biked to school today and everything was fine. I just wanted to see how far it is from my apartment to school. When I came back, the astrale went crazy. It says I was travelling at max speed of 320.9 mph. It is random news, but hopefully it works again.

Boudicca 01-19-06 06:15 PM

Wireless computer?

Probably picked up interference from a bus, or a cop car, or even the electronic wires they have under the road to change the lights when cars approach an intersection. I gave up using wireless computers for that very reason. They look good, but I was fed up with my top speed coming in at 99.9 mph. Given the figure you got, I guess I shouldn't complain.

Nubie 01-19-06 06:25 PM

The Astrale is not wireless, so I don't think that there should be interference from other sources.

free_pizza 01-19-06 06:37 PM

Quote:

Originally Posted by Wannabe
Today, I biked to school today and everything was fine. I just wanted to see how far it is from my apartment to school. When I came back, the astrale went crazy. It says I was travelling at max speed of 320.9 mph. It is random news, but hopefully it works again.

Does your astrale have cadence? If so, my cadence meter goes sky high when i have the cranks paralell and im going over a bumpy section, so maybe you had it on cadence mode...

Wannabe 01-26-06 01:15 AM

It wasn't cadence because I checked the max speed. The problem stopped so I wonder what happen to my cyclocomputer.

Cyclaholic 01-26-06 04:22 AM

Did you at any stage feel like you were going about 10 times faster than traffic? :p

DieselDan 01-26-06 11:53 AM

Even wired computers can recieve interferance between the magnet and sensor. My old Vetta was prone to interferance in two certain locations.

worker4youth 01-26-06 11:59 AM

Why are car sensors so much better than bike sensors? You hardly ever hear of these kinds of problems in any cars.

twahl 01-26-06 01:27 PM

Quote:

Originally Posted by worker4youth
Why are car sensors so much better than bike sensors? You hardly ever hear of these kinds of problems in any cars.

Cost and shielding. If there was a similar sensor used on a modern car, it would have rare earth magnets, which are more expensive but much stronger. The wiring would be shielded if it were prone to interference. Other factors go in but it's really a matter of cost. We demand a lot of cool features at a reasonable price when we buy a cyclometer. If we were expecting these functions to come with the bike, so that every bike came with them, they would probably be more reliable, and the greater cost of that reliability would be built into the cost of the bike. I'm sure that pro cyclists pay more for their computers, and demand them to be more reliable.

2manybikes 01-26-06 03:15 PM

Once in a while on a bumpy road the switch inside the speed sensor will be bumped so hard it will bounce open and add a few extra "blips" to the ones already being sent to the computer. This of course will give an incredible speed reading. It's a little more common in older computers than new ones. My guess is that the spring tension in the magnetic switches gets a little weaker with use. It's nothing to worry about if it does not repeat itself.

If it does happen again tell your buddies that's how fast you went. Try and look serious.... :)

SteveE 01-26-06 10:53 PM

Watcha complainin' about? :)


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