My new bike recently developed a slight ticking noise, on the front wheel, once per revolution. It's drowned out by louder ambient noise (cars, etc.) but in quieter conditions can be heard and is annoying. Thinking it had something to do with the rim, I brought the bike in to the guy who had built it up. We looked at it and determined that the tick is actually coming from the Cateye Astrale front wheel pickup. The passage of the magnet (or whatever it is on the spoke) activates a switch in there, which makes the noise. Arggh.
My new bike recently developed a slight ticking noise, on the front wheel, once per revolution. It's drowned out by louder ambient noise (cars, etc.) but in quieter conditions can be heard and is annoying. Thinking it had something to do with the rim, I brought the bike in to the guy who had built it up. We looked at it and determined that the tick is actually coming from the Cateye Astrale front wheel pickup. The passage of the magnet (or whatever it is on the spoke) activates a switch in there, which makes the noise. Arggh.
Has anybody noticed this phenomenon?
Yes. Both my Cateye pickups do that. Not being either very smart or having a background in engineering, I have thus far assumed that the Cateye pickup uses a sprung reed switch which you can hear closing when the magnet passes. That closure presumably closes a circuit, which sends a pulse to the computer.
I usually only notice that noise when I'm spinning the front wheel while off the bike. Try not to let it drive you completely crazy 🙂.
I get a louder noise when the sensor is misadjusted and hits the magnet, -- Ryan Cousineau, [email hidden] sfu.cawiredcolaOpen ↗ President, Fabrizio Mazzoleni Fan Club
the guy who had built it up. We looked at it and determined that the tick is actually coming from the Cateye Astrale front wheel pickup. The passage of the magnet (or whatever it is on the spoke) activates a switch in there, which makes the noise. Arggh.
Er, the reed switch will always make a faint click. If it bothers you, try moving the switch as far down the fork as practical, unless you have a hub dynamo. -- David Damerell <[email hidden]> flcl?
Hmm.. I don't have a cateye astrale, but I've had cateye computers and other computers and never noticed a clicking sound. I always thought that the sensor was actually just a coil of wire, and the magnet going through it produced a small amount of voltage which the computer sensed. But if there's a clicking noise, maybe they are using a reed switch or whatever to complete the circuit. But even so, I'd never be able to hear one of those click over while cycling. Odd..
"Dave Stallard" <[email hidden]> wrote in message news:2hels8FbvlcvU1@uni- berlin.de...
Quoted message said:
My new bike recently developed a slight ticking noise, on the front wheel, once per revolution. It's drowned out by louder ambient noise (cars, etc.) but in quieter conditions can be heard and is annoying. Thinking it had something to do with the rim, I brought the bike in to the guy who had built it up. We looked at it and determined that the tick is actually coming from the Cateye Astrale front wheel pickup. The passage of the magnet (or whatever it is on the spoke) activates a switch in there, which makes the noise. Arggh.
"Dave Stallard" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
My new bike recently developed a slight ticking noise, on the front wheel, once per revolution. It's drowned out by louder ambient noise (cars, etc.) but in quieter conditions can be heard and is annoying. Thinking it had something to do with the rim, I brought the bike in to the guy who had built it up. We looked at it and determined that the tick is actually coming from the Cateye Astrale front wheel pickup. The passage of the magnet (or whatever it is on the spoke) activates a switch in there, which makes the noise. Arggh.
Has anybody noticed this phenomenon?
Dave
The Astrale is designed to have the pickup mounted on the REAR wheel. The other pickup is for cadence and is supposed to be mounted near the crank. If you have it mounted properly and you can still hear that clicking over even mild wind noise, then you must be AWFULLY slow. And if you're obsessing about that kind of a little tick, you'll probably go to pieces when you have a real problem.
"Dave Stallard" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
My new bike recently developed a slight ticking noise, on the front wheel, once per revolution. It's drowned out by louder ambient noise (cars, etc.) but in quieter conditions can be heard and is annoying. Thinking it had something to do with the rim, I brought the bike in to the guy who had built it up. We looked at it and determined that the tick is actually coming from the Cateye Astrale front wheel pickup. The passage of the magnet (or whatever it is on the spoke) activates a switch in there, which makes the noise. Arggh.
Has anybody noticed this phenomenon?
Dave
yea, I've heard that too. Concluded that there was slight aerofoil action on my flat spokes and so adjusted the pickup out a little more from spoke. No more click.
Yes. Both my Cateye pickups do that. Not being either very smart or having a background in engineering, I have thus far assumed that the Cateye pickup uses a sprung reed switch which you can hear closing when the magnet passes. That closure presumably closes a circuit, which sends a pulse to the computer.
Thanks for the confirmation. FWIW, it didn't start right away. It only started after a few hundred miles. The Cateye on my old bike didn't have it at all.
Quoted message said:
I usually only notice that noise when I'm spinning the front wheel while off the bike. Try not to let it drive you completely crazy 🙂.
I'll try. Given that I now know it's not something mechanically wrong or subpar on the bike itself, I may be more able to convince myself that it doesn't bother me.
"psycholist" <[email hidden]> wrote in message news:<[email hidden]>...
Quoted message said:
The Astrale is designed to have the pickup mounted on the REAR wheel. The other pickup is for cadence and is supposed to be mounted near the crank. If you have it mounted properly and you can still hear that clicking over even mild wind noise, then you must be AWFULLY slow. And if you're obsessing about that kind of a little tick, you'll probably go to pieces when you have a real problem.
Bob C.
Hi, the Cateye Astrale 8, which is the current model and most likely is the one that would be installed on a new bike, is designed to have the speed pickup mounted on the FRONT wheel. I just took a look at the instruction manual, to verify this. For all we know, the OP could be WONDERFULLY fast, he didn't say that he heard it all the time. I have had mine on the bike for close to 2000 miles and have never heard it. For the OP, if it really bothers you, contact Cateye, maybe they can send you out a new harness. Or talk to your LBS, if you just bought a new bike, maybe they will exchange the harness.
"Jeff Starr" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
"psycholist" <[email hidden]> wrote in message
news:<[email hidden]>...
Quoted message said:
Quoted message said:
The Astrale is designed to have the pickup mounted on the REAR wheel.
The
Quoted message said:
Quoted message said:
other pickup is for cadence and is supposed to be mounted near the
crank.
Quoted message said:
Quoted message said:
If you have it mounted properly and you can still hear that clicking
over
Quoted message said:
Quoted message said:
even mild wind noise, then you must be AWFULLY slow. And if you're obsessing about that kind of a little tick, you'll probably go to pieces when you have a real problem.
Bob C.
Hi, the Cateye Astrale 8, which is the current model and most likely is the one that would be installed on a new bike, is designed to have the speed pickup mounted on the FRONT wheel. I just took a look at the instruction manual, to verify this. For all we know, the OP could be WONDERFULLY fast, he didn't say that he heard it all the time. I have had mine on the bike for close to 2000 miles and have never heard it. For the OP, if it really bothers you, contact Cateye, maybe they can send you out a new harness. Or talk to your LBS, if you just bought a new bike, maybe they will exchange the harness.
Life is Good! Jeff
Really? They made it a front pickup? I always bought the Astrale because it was a rear pickup and you could use it on the trainer and keep track of your speed/avg./etc. I've got about 3 old ones on various bikes and I just keep swapping out for the one that has the right wheel measurement in it or has the best batteries.
My apologies.
I still can't see being bothered by that little ticking noise, though.
On Mon, 24 May 2004 13:04:09 -0400, "psycholist" <[email hidden]>
Quoted message said:
The Astrale is designed to have the pickup mounted on the REAR wheel. The other pickup is for cadence and is supposed to be mounted near the crank. If you have it mounted properly and you can still hear that clicking over even mild wind noise, then you must be AWFULLY slow.
Or awfully fast. Have you ever noticed how quiet it gets when riding with a 20 MPH plus tailwind.
