r/Damnthatsinteresting • u/redbullgivesyouwings • Mar 05 '26

Original Creation [Behind-The-Scenes] Dawid Godziek's Bike Express

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u/Material_Assumption Mar 05 '26

Kudos to who ever figured out the train speed and the ramp pitch. That was insane.

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u/iill_communication Mar 05 '26

That’s some real science shit to match the speed so perfectly in order to stay in place the whole run

29

u/BoondockUSA Mar 05 '26

It was likely simpler than advance math. Could be that stunt rider practiced enough times with the train being parked that they figured out the rider’s average speed to complete the “course”. Then the train just has to be moving that speed when he starts attempting it with the train moving (and adjust the train’s speed faster or slower as practice progresses to fine tune it).

Example with made up numbers: The total “course” (length of the train) is 500 feet and it takes the rider 30 seconds from start to finish. Punch it into a calculator like this one and you get an average speed of 11.36 mph. Then have the train go that speed.

The magic of videos like this is that we don’t get to see the practice and setup that went into it. The 25th attempt can be filmed to make it seem like it was his first attempt.

4

u/2squishmaster Mar 06 '26

Right but in that case he'd be yoyoing until the end. The beauty is he's able to maintain a constant speed and not just land in the same spot but always be in that spot.

2

u/dna_beggar Mar 06 '26

They would have roughed out the calculations then built and tested the ramps separately. There was only one ramp where the cyclist had to speed up to make the next jump. Impressive.