That is because the machine has a fair size piston that gives you better response of the give effect. The give travel is exactly like the stroke 3.5 when the spring is fully relaxed. In a coil machine the give is about that with an 20 or 18 G back spring tuned with a 2.5-3.5 mm stroke at 46-50 DC. I tried to mimic the response of my coils and pour it into this rotary.
And to answer to some questions that were asked via PM. This machine will not replace my coils nor is intended to be better or worse. Just another tool. I am actually designing a couple of new coil machines as well as a new coil system. Basically what we learned from this rotary will transition slowly into my coils.