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Old 10-16-02, 10:16 AM   #1
RonH
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Wireless computer question

I want to add a wireless computer to my trainer setup so I can install and remove it quickly (no wires). I have an RT77 on the front fork but it doesn't work with the front wheel not turning. Wonder why??

Will a wireless work if the magnet and sensor are mounted on the rear wheel or is the distace to the receiver too far?
I'm looking at the Nashbar NR-WC2 (cheapest one I've found).

Any other ideas? Thanks.
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Old 10-16-02, 12:01 PM   #2
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My guess would just be to try it. If it does not, then put the speedo behind you and set up a mirror. It seems to me that the distance should be okay.
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Old 10-16-02, 12:04 PM   #3
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I've tried to set up my Cateye Wireless 2 on my rear wheel and it didn't work. Distance from receiver was too far or too much stuff in the way (ME!)

I doubt it would work. Trying not to be pessimistic, but I don't think any wireless will. I hope I'm wrong. If I am, please let me know so I can buy one too!

L8R
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Old 10-17-02, 05:16 AM   #4
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They usually need a line-of-sight roughly no more than 40cm between sender and 'pooter. I dumped my Cateye 2 cordless as my bar mounting was about 45cm from the sender and it was very unreliable from 30cm so it stood not a chance. I switched back to the cord 'pooter. Looks really sh1tty with another cable dangling around.

Try it though, you might find it can work.

I like the idea of the mirror. But would'nt you need two mirrors for the first would make it look backward, so you'd need another to make it invert the first image? A bit like looking at an ecnalumba when your own the sidewalk and instanly becomes an ambulance when you look at it in your rear-view mirror.
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Old 10-17-02, 10:28 AM   #5
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I received the following from Nashbar about the NR-WC2 wireless.

Hi Ron,

This will not work, the wireless computer only has a range of 2 feet so it only works on the front wheel. The only computers we have that will work on the rear wheel use a wire, like the Cateye Astrale and Nashbar Cadence.

Thanks, Nashbar Tech


Guess that answers my question.


How can I measure speed and distance when on the trainer? I don't want to spent a lot of money on this project.
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Old 10-17-02, 11:24 AM   #6
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Ron,

I switched to Cateye Astrale, got cadence and the entire
operation is controlled from the rear wheel. Downside
is it isn't wireless (not a problem for me). I just bought
extra magnets for different wheelsets.
Best part is the Astrale isn't expensive (less than $40)

Marty
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Old 10-17-02, 12:54 PM   #7
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Marty,

I got rid of my Astrale. Had one on my old road bike. Had lots of problems with it. That's why I "upgraded" to the Vetta RT77 on both of my bikes.

Thanks for the tip anyway.
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Old 10-17-02, 02:17 PM   #8
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Quote:
Originally posted by Bokkie
Looks really sh1tty with another cable dangling around.
Try this -- get some cable ties (if you can match the cabling housing color --- great) and run the computer wires along the brake/shifter cables. Hide the computer wire on the underside of the downtube, holding them in place with strips of electrical tape or cable ties. If you take a bit of care, the computer wire will hardly be noticed.
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Old 10-18-02, 06:32 AM   #9
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You could always try cabling the wireless computer to your top tube just near the seat post. It might work and a glance down would be enough to check speed etc.
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Old 10-18-02, 11:34 AM   #10
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Quote:
Originally posted by chewa
You could always try cabling the wireless computer to your top tube just near the seat post. It might work and a glance down would be enough to check speed etc.
Thanks Chewa! I had this same idea last night when I was on the trainer.

Mount the sensor on the seatstay (near the rear brake) and mount the computer on the top tube, far enough forward to see, but close enough to pick up the signal. Ingenious!!
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