The most «punitive» test for carbon, however, is the impact test.
Usually in practice the frame is positioned vertically and bound in the back; a weight (according to 22.5 kg regulation) is then dropped onto the front fork, along the front hub axle — rear hub, from a distance of 212 mm. If the frame does not undergo a permanent deformation of 8 mm, it is considered to be compliant.
Starting from the data obtained from our field tests, we do not however consider these limits sufficiently rigorous, so we have gone much further.
Our test therefore consists in assembling the frame as described, using a weight of 24.5 kg, dropped first by 212 mm, then in succession by 350 mm, by 450, by 600, by 750, by 900 and finally by the maximum supported by the machine, that is from 1.040 mm.
The C64 chassis brilliantly overcomes this terrible test, but the most important thing is that even if the computer signals a small failure, thanks to the structure of our carbon safety would still be guaranteed and the complete breaking of the frame would never occur.