There is a lack of a large rear wing, as it was simply in the line of fire
development to come. We still don’t run sway bars; there are lots of things we can still add, but we don’t want to overcomplicate things.” He added that he likes to have as much adjustability as possible, but, “You just seriously don’t have enough time to test all of that. You show up to the event, and you have a practice day, where you will get six laps total, if you’re lucky, and every one of those laps is tandem. If you’re trying to do a lead lap and just learn the track, you’re still going to have JR [Vaughn Gittin JR] or JTP [Justin Pawlak] or whoever on your door, because they are just trying to get in as much tandem as they can.”
Now with some data behind them and the MX-5’s first season in the bag, RADBUL was shipped home to New Zealand over the off season for a rework, though mechanically not a lot has changed. The engine was stripped and found to be in perfect condition, even after the brutality that was forced upon it when the team overrode the heat cut to ensure it would stay on full power during a run. The only changes were the addition of flat shifting to the Holinger and a revised cooling package, as Mike told NZPC: “Cooling was an issue for us last season; even though we had the best gear in there from PWR, we weren’t really utilizing it. We had the big crash at Highlands before it went up to the States, so we just ran out of time having to rebuild a lot of the damage. So, this year, we have a lot more ducting, we have put in coolers for the gearbox, power steering, and fuel, and an ice box with water sprayers.”
Chassis-wise the team will continue to dial in more grip, and keep throwing boost at the four-rotor. The MX-5 is the fastest car on the grid and has no problems with the amount of angle Mike can drive it on. But one of the biggest casualties with this combo, combined with the short boot length and banked US-style tracks, was the number of Rotiform wheel barrels Mike destroyed. You will notice there isn’t a large rear wing, as it was simply in the line of fire — that’s how often the MX-5 was trading paint with the walls. To combat this, the rear diffuser is actually mounted on small coilovers, giving it some spring tension to not only help Mike ride the wall but also stop the aero and wheels being destroyed run after run.