In the banked curve timing and a clean exit count. What literature and accident data say, what the crew contributes and why there is no how-to to copy.
The banked curve decides the run. The honest answer to "How do you drive it?": pilots know that after years on the track, and there are hardly any figures on it. This guide therefore promises no technique to copy. It explains what is documented scientifically and by the rules, and what is not.
Documented is the view of the clinical literature: length, top speed, gravitational influence, maximum and average gradient and curve exposure vary from track to track and determine the technical and physical demands [2]. Pilots must build a memory for each curve, with the curve's challenges and the tactical approach of how one curve sets up the next [2]. The literature also notes that an athlete who enters curves at a lower speed must alter their steering from the usual, which can raise crash risk [2].
Plus the figure that puts the risk in perspective: at the Whistler Sliding Centre the overall injury rate in four years and more than 43,200 runs was 0.5 percent of runs; more frequent and more severe injuries occurred in the lower track sections, and with more experience the frequency fell [3].
The curve is the pilot's work. The crew carries it with stillness.
Entry criteria (practice standard):
One curve sets up the next [2]. You do not think of single curves but of sequences. Pilots build this picture with film, track walks and mental runs [2].
Milestone: You describe the curve sequence of a track from memory and explain how one curve affects the next.
Every track has its own demands: speed, gravity, gradient, curves [2]. What works on one track does not automatically work on another. That is a limit to every learning guide, this one too. Whoever tells you there is "the one" right line through a curve oversimplifies: line, speed and ice condition change from run to run. (practice)
Milestone: You name three differences between two tracks you know.
If a run starts badly and speed is lower, steering may have to be adjusted, which can raise crash risk [2]. The decision on this is made by the pilot with his coach in the debrief, not during the run.
Milestone: You discuss with the coach how you handle a slow start in the first curve.
The crew sits in the practised posture and stays still [2]. Movement in the curve would disturb the line. At the same time forces act: in skeleton up to five g in a curve are described [2]; in the bob the mouthguard study documents head acceleration peaks averaging about 12 g [4]. The sources give no g-values for bob curves, so I leave them out.
Milestone: On passenger runs you sit still through the curves and report complaints.
With increasing experience injury frequency fell at the Whistler Sliding Centre [3]. A pilot who drives new tracks proceeds step by step: training, pilot runs, competition, with a coach. (practice) What matters is that after every run you document not only the time but also the feel: was the entry calm? Did the exit come clean? That turns experience into checkable knowledge.
Milestone: You can name your learning stages on the track.
The bobsleigh track is no practice ground for self-experiments. This guide deliberately contains no instruction on driving curves.
When you learn a new track as a pilot, draw the curve sequence: a sketch with curve numbers and one sentence per curve ("entry wide, exit calm"). Then go through the sketch as a mind run. The literature names the mental track map as central to success [2]. The sketch is practice, not a study finding.
A pilot learns that over years on the track with a coach. The studies and rules I read contain no technique instruction for it.
The sources name up to five g in a curve for skeleton [2] and head acceleration peaks averaging about 12 g for bob athletes [4]. They give no g-values for bob curves.
In Whistler in the lower track sections [3].
A full-face helmet [1], Kevlar vest and race suit [2].
As a pilot only on the track with a coach; as a crew member you sit still and report complaints.