Rotational speed for 300 km/h and 15.92 m lines: 1 lap in 1.2 seconds
Pull in the handle: 218 N (22 kilograms, 49 lbs)
The equivalent power with 17.69 m lines will give 290 km/h; 1 lap in
1.38 seconds
Pull in the handle: 183 N (18.7 kilograms, 41 lbs)
Here is the reason for the rule change; Safety was marginal on the
shorter lines.