June 25, 2016
I thought it would be interesting to show the results of the problems I encountered with the new splitter at Imola. As posted earlier I had some serious chattering of the front splitter above 200km/h which was a bit disconcerting at those speeds.
The chattering was caused by the low stiffness of the front mounts which when air passed over the splitter at 200km/h it excited some natural frequency of the assembly, is what I’m guessing. Due to no straight passage to the frame I decided to mount the front supports directly to the bumper, which is clearly not stiff enough.
Luckily the splitter simply skimmed off the tarmac and didn’t decide to catch on to something, otherwise I would have been a pretty big explosion. Some scrapes under the splitter.
The front supports got battered pretty hard; I should probably go up in thickness. What I was very surprised by is the rear mounts; they bent backwards despite them being made out of 2mm steel which I thought would be more that sufficient for the location. Most likely they rearward force of the splitter hitting the ground caused them to bend.
Another interesting one are the canards which have bent downwards. These were never a problem, even at Monza I didn’t have any issues, but most likely this is again caused by the chattering of the splitter causing the entire bumper to rock up and down. The rocking in addition to the downforce obviously was too much for the brackets.
So the next move, as soon as the fuelling issue is sorted, is to address these issues and beef-up the entire mounting strategy, but it has been a great learning experience.