No conclusion yet on the aeroscreen’s effect on drafting at IMS

Hinchcliffe in the Andretti Autosport-Honda and Dixon in the Chip Ganassi Racing-Honda both broke into the 224mph zone, but spent much of their day running raceday setups and practicing running in dirty air.

Dixon said his initial impression was that the draft effect had been “much better at Texas [Motor Speedway, which hosted the much delayed season-opener in June]. But I think it’s hard on days like this, too, because there are a lot of people kind of in mixed configurations.

“You do see occasionally someone out front that’s running quite quick, but they’ve got a smaller wicker or you can see they’re trimmed out a little further on the rear wing. We did see quite a few different aero configurations.

“I think definitely for the first three cars you feel that a little more. Again, I think as you move further through the pack, it just depletes [the draft effect] a little bit more. I think it is there… The car out front is pretty much a sitting duck right now.”

He later added: “The Aeroscreen when we first tested it seemed like it kind of affected the car a little different aerodynamically. I’d say today actually felt more normal. No real difference, and the vision is good.”

Hinchcliffe, who will be making his third and – for the moment, at least – final start in a sixth Andretti…

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