Yet its still valid data in that its trivial to calculate the theoretical maximum peak accel based on the possibly independent peak accels of the individual axes.
If in theory the max peak acceleration could never exceed 2 G then there's no point in continuing the study. If the theoretical max peak accel could be 57 G then there's a point in continuing the study.
The whole problem is irrelevant anyway. The problem isn't one individual sled journey, the problem is thousands of competitors taking thousands of rides over many years, so "tens of millions". They are competitive with each other having small std deviations in performance so each sled ride is roughly the same. Tiny reliable cameras have been a thing for a century as have mechanical timers. Simply bolt a half pound telemetry package to every sled that snaps a single random point of data via camera or some weird linkage to clutches and springs. Then run a data analysis and make statistical predictions. You wouldn't even need a 1960s mainframe to run the statistical analysis. This would have been something near BAU for mid-century aeronautical engineers, for example. I'm sure something similar was implemented during the test program for the F-86 or maybe P-51.
