Spin Rate

[Tango]

DK spin rate 1150 but Rev- 20. What does that mean? I have actually never used either.

 

[Northern Dad]

DK is RPM and Rev Fire is RPS...so 20 revs per second is 1200 per minute....for some reason softball seems to use rps more and baseball uses rpm more

 

[Rick Pauly]

DK spin rate 1150 but Rev- 20. What does that mean? I have actually never used either.

The DK ball measures revolutions per minute whereas the RevFire measures in revolutions per second. Therefore your DK measurement is 19.16 revolutions per second.....that's a fairly accurate coorelation between two devices.