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This answer gives a good overview of what the requirements are for the turtlebot1 gyro: http://answers.ros.org/question/115741/parallax-gyro-work-on-turtlebot-1/#116621
Looking at your gyro ( http://support.robotis.com/en/product/auxdevice/sensor/dxl_gyro.htm ) and doing a little math, it looks like it reads 1V/300 degrees/sec ~= 3.3 mV/degree/sec. Not quite as sensitive as the original gyro; you may have to make some adjustments.
There are also a number of other questions the discuss alternate gyros for the turtlebot:
http://answers.ros.org/question/31341/gyro-for-turtlebot/ ( http://www.pololu.com/product/1255/ ) http://answers.ros.org/question/12745/gyro-for-turtlebot/ (discusses adjusting the gyro sensitivity) http://answers.ros.org/question/11161/gyro-substitute-for-turtlebot/?answer=16553#post-id-16553 http://answers.ros.org/question/10437/using-a-different-gyro-on-a-turtlebot/
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