Quote Originally Posted by SadieKate View Post
Just because the questions segued from rear wheel sensors and to wireless, I'm just going to post a little factoid that you may or may not know.

Wireless sensors/computers only work when the two are within a fairly short and limited distance from each other. You may be able to put a wireless sensor on the rear chain stay but only if the bike is very small. Check the distance in the directions before making the assumption that you can put it on a rear wheel. This works for my Polar for the bike I use in the trainer if I set the sensor to the highest power setting. This only works on the tandem if I don't move my hand around a lot (I can see the wrist unit on the tandem bars) even though I am the stoker.
I ran into this problem too. The speed part works fine (spoke magnet) with the sensor on the chainstay. But the cadence sensor on the crank arm is too far away. My model says it needs to be w/in 5mm. But they give you this piece of rubber padding that once I cut it down and put about 4 layers of it under the cadence magnet, now it's close enough to the sensor to work.

Obnoxious, but the instructions don't indicate that there's any other setup that will work.