I have a Cycleops spinner for training, and thought I had the bright idea of buying a wireless cyclocomputer to use on that bike with the magnet and pick-up on the rear wheel so that it'd work on rides AND on the spinner.

However, I see that the maximum range is 39" on some and only 26" on the one I was most interested in. I doubt that'd be enough.

Anyone know of wireless cyclocomputers having good enough range to work off the back wheel?

Or, other ingenious solutions?

I see that Mavic makes a Trainer magnet, but I don't have the compatible cyclocomputer, and like this SportsInstruments better:

http://www.sportsinstruments.com/si90hr.html

Any help is appreciated!