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  1. #1
    Senior Member askrom's Avatar
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    Wireless Computers -- Use with REAR wheels??

    Can the sensor for a wireless cycle computer be installed next to the REAR wheel instead of the front? I've seen some models that are intended for that, but others seem to suggest that the fork is the right place for it. Why not the rear?

  2. #2
    DEADBEEF khuon's Avatar
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    Quote Originally Posted by askrom
    Can the sensor for a wireless cycle computer be installed next to the REAR wheel instead of the front? I've seen some models that are intended for that, but others seem to suggest that the fork is the right place for it. Why not the rear?
    Most wireless setups don't have enough transmit power to reach from the chainstays or seatstays to the receiver at the handlebar. Some are approved for rear wheel setup but those are currently the exception. Additionally, the human body can absorb quite a bit of RF so it may block the signal. MY Shimano FlightDeck's wireless limitation is a max seperation distance of 50cm vertically and 10cm laterally.
    1999 K2 OzM 2001 Aegis Aro Svelte OCP Club Member
    "Be liberal in what you accept, and conservative in what you send." -- Jon Postel, RFC1122

  3. #3
    Senior Member (Retired) gmason's Avatar
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    Quote Originally Posted by khuon
    Most wireless setups don't have enough transmit power to reach from the chainstays or seatstays to the receiver at the handlebar.
    OTOH, some explicitly require mounting on the rear wheels - Cateye CD300DW, for example.

    In fact, they suggest that when you sync the sensor and head, you must have them separated by at least 20 cm or it will not register.

  4. #4
    Afterburners...good idea Sapling's Avatar
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    I'm using a Polar s720i (HRM w/ cycle functions), w/ the sensor mounted on rear wheel. Works great, though I will say I used Polar's recommended method to boost power of the bike-mounted transmitter.

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