“So they said, ‘No. You’re going to have to move the whole wheel in and out’. I think when they said that they were hoping that this would be too difficult and that we would go away and cause them no more problems.
“But we have a very inventive chief designer, and our chief designer John Owen took one look at that challenge, and he’s got a really good gut feel for whether something is doable or it’s not, and that’s a really helpful characteristic.
Owen's persistence led to the second incarnation of the device that ultimately appeared on the car in pre-season testing earlier this year.
Allison added: “John took that challenge on, reckoned he could do it, put it out to our very talented group of mechanical designers, and between them they cooked up two or three ways that it might be done.
"We picked the most likely of those three and, about a year after that, out popped the DAS system that you saw at the beginning of this season.”
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