• "the reponse system's grip on the string is what transmits the force from the string to the yo-yo body to start it spinning.". Actually, it is the loop of the string which transmits the force to start it spinning, the response system's grip on the string generates enough friction for the force to make the yo-yo come back when it is tugged or binded. --Wilfred 12:52, 6 Feb 2006 (PST)
  • Well, not really. The loop basically exerts a radial force on the axle. In a fixed axle yo-yo this results in friction and thus a tangential force (i.e. rotational ac-/deceleration). In a transaxle the friction at the axle is very small (in a clean bearing even negligible) and without tangential force there can be no acceleration. So during a throw almost all of the force is transmitted to the yo-yo halves because the windings of the string are firmly wedged inside the response system. A bind is basically the inital "wedging" if there is not enough axle friction to overcome the stiffness of the string and start the first few windings.

So what you are saying only holds true for fixed axle yo-yos with lots of friction at the axle and very little friction at the sides of the gap. The original wooden axle Silver Bullet was such a yo-yo. Another example I cannot recall. --HB 02:04, 7 Feb 2006 (PST)

  • OK, I see what you mean. So the response system has a grip on the string which transmits the force to get the yo-yo spinning as it falls and the loop of the string against the axle stops the yo-yo descending, resulting in it spinning at the bottom of the string. Is that correct? --Wilfred 05:22, 7 Feb 2006 (PST)
  • Yes. --HB 07:50, 7 Feb 2006 (PST)