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cordless rear wheel pickup computer?(7 posts)

cordless rear wheel pickup computer?feathers mcgraw
Jan 29, 2004 1:53 PM
Can anyone recommend a cordless computer w/ cadence that uses a rear wheel sensor?
never seen one...C-40
Jan 29, 2004 4:38 PM
The value of a rear wheel sensor escapes me, since using one on a trainer is meaningless. Speed and distance are both irrelevant on a trainer. Think in terms of perceived level of exertion and time, not speed or miles.
Here's one . .Drone 5200
Jan 29, 2004 4:57 PM
you can set the jumper inside the speed sensor of the polar 520/720 so that it has a longer range and will work on the rear wheel. This thread explains how:

I agree that the data from the trainer does not correlate with actual riding on a flat road. But its not meaningless. It can give you a good indication of effort on the trainer from day to day compared to other days on the trainer.
DisagreeMatt Britter
Jan 29, 2004 4:59 PM
I mounted the sensors (speed and Cadence) on my rear chain stay from my polar 720. You must open the sensor and move the jumper for the long distance range.

The main reason was exactly to ride on the trainer and do warmups for races. Since I live in Cal I do not do too much on the trainer, but for interval work on cold dark nights it is much safer at home on trainer.

This is the second year for the sensors and I have never had a problem. I did have a minor issue with the sensors moving in the first race of last years season. The course had LOTS of bot dots and the sensors moved. This was really my fault for not pulling the zip ties tight enough.
disagreefeathers mcgraw
Jan 29, 2004 5:21 PM
I have a Kurt Kinetic, which correlates to road riding pretty closely. Also, a specific speed equals a certain wattage, so it's almost like having a power meter. Even if it didn't correlate to real world riding, it's still useful to compare exertion and time to distance and speed.
me too...C-40
Jan 29, 2004 7:41 PM
On one of my favorite routes, it takes over an hour of montain climbing to go about 11 miles and less than 20 minutes to go down the same 11 miles. Although the climb is slow, it's a lot tougher than going down at a much faster rate.

Depending on the gear chosen and the resistance level setting on my fluid trainer, either condition can be duplicated. If you chose a high gear and a low resistance, it will produce and impressive speed and distance, but not a challenging workout. A heart rate monitor is much more valuable for judging the intensity of your workout.
re: cordless rear wheel pickup computer?aliensporebomb
Jan 30, 2004 5:25 AM
I had to put my sensor on the rear wheel because my
bladed carbon fork is so close to the spokes that a
conventional sensor would not work.

That being said, my trainer is higher resistance than
the real road so my first time out riding last year it
was like I was shot out of a cannon since the resistance
was much less.

I track miles, time, effort, average and max heart rate
among other things.