Liam's Z4C race car project
Posted: Mon Mar 09, 2020 11:24 am
Got the splitter finished over the last week or so. I always seem to be juggling 3 jobs at once, but it does keep things interesting!
Based largely on my effective RX8 splitter (which went through 3 different iterations), the splitter itself is *hung* from the front crash structure on steel wire. There are two benefits to this:
1. It deflects upwards in the event of hitting something (like a kerb, or the end of my trailer!)
2. It is easily adjustable, because the angle of the splitter is critical
So Β£30 later I have a bunch of balustrade fittings, and some go kart brake linkages (small clevis clips).
I went for 5 mounting points: three across the crash structure, and two from the headlamp brackets. The two from the headlamp brackets are angled laterally so that the splitter doesn't wobble.
Then it needs paint for the untreated wood, end plates for show, an air dam to keep air from passing under the bumper, and a deflector to keep air from passing under the radiator. I reused the rubber strip on the OEM undertray to seal against the radiator. This still allows for some adjustment/deflection of the splitter. All told, it's about 8kg but it will provide far more in terms of laptime than the loss due to weight gain.
And finally, because I might have to make another due to damage, I made a template from some 5mm plywood
Based largely on my effective RX8 splitter (which went through 3 different iterations), the splitter itself is *hung* from the front crash structure on steel wire. There are two benefits to this:
1. It deflects upwards in the event of hitting something (like a kerb, or the end of my trailer!)
2. It is easily adjustable, because the angle of the splitter is critical
So Β£30 later I have a bunch of balustrade fittings, and some go kart brake linkages (small clevis clips).
I went for 5 mounting points: three across the crash structure, and two from the headlamp brackets. The two from the headlamp brackets are angled laterally so that the splitter doesn't wobble.
Then it needs paint for the untreated wood, end plates for show, an air dam to keep air from passing under the bumper, and a deflector to keep air from passing under the radiator. I reused the rubber strip on the OEM undertray to seal against the radiator. This still allows for some adjustment/deflection of the splitter. All told, it's about 8kg but it will provide far more in terms of laptime than the loss due to weight gain.
And finally, because I might have to make another due to damage, I made a template from some 5mm plywood