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  1. #1
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    What's best for me?

    I see a lot of threads saying how GPS can have as much as 20% inaccuracy in mileage with trails with lots of elevation changes and turns.

    My goal is to basically track current speed, average speed, top speed, current distance (current ride), and cumulative distance (from all rides). I'd also like to know my average pedal speed. Seems like the CC-RD430DW or CC-RD400DW should be able to do this. The only thing it lacks is monitoring altitude which I don't think will be of importance to me.

    Some nice additions to have would be ability to sync via BT to my iphone to upload data and outside temperature, but not really required.

    I see the Garmin 510 does a lot, but i'm hesistant to pay $400 when there's other models for less than half the price that seem to do the same.

    Do any Garmin's tie into the wheel to offer more precise distance measurement? Do the Cateyes provide more accurate distance being tied to the wheel?

    Thanks for your help
    Last edited by njmark84; 01-28-2013 at 08:58 AM.
    2011 Specialized Rockhopper Expert 29er

  2. #2
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    Garmin offers a speed/cadence sensor. 20% is big error from a good gps. 10% is more like it. Wheel sensors can have the same amount of error if poorly calibrated. Nothing will be exact all the time but most methods will be exact or pretty close some of the time.

  3. #3
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    I'm not sure if I want to spend the money on a GPS unit considering they are 2x the price at least, and don't offer any functionality that I would use over what a regular cyclometer offers.
    2011 Specialized Rockhopper Expert 29er

  4. #4
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    Quote Originally Posted by njmark84 View Post
    I'm not sure if I want to spend the money on a GPS unit considering they are 2x the price at least, and don't offer any functionality that I would use over what a regular cyclometer offers.
    Whatever you like. The gps gives you a spatial element to your fitness numbers. Some, like myself, are mostly interested in the spatial element by itself. If you are not interested in spatial data, then a gps may not be for you.

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