Lotus are unlikely to race their 'double DRS' system during the remaining four rounds
Team still struggling to undestand device
By William Esler
Last Updated: 31/10/12 10:07am
The Enstone-based squad attracted plenty of attention in Hungary when the E20 appeared with additional air inlets either side of the engine intake.
The system was designed to stall the rear of the car independently of the DRS system, giving the E20 a useful straight-line speed boost during a race - when DRS use is limited.
However, the team have struggled to understand how the air reattaches to the car when the device is deactivated and it now looks likely to be shelved for the rest of the season.
"Our plan is to work on understanding how to make it act in a sufficiently predictable manner to be deployable in a race," Allison said.
"Given the difficulty we have experienced so far, I think it would be optimistic to see it used in anger this season, within the final races remaining."
One part Lotus are confident of making a step-forward with in Abu Dhabi, however, is their Coanda-style exhaust.
The system increases rear-downforce on the car - but lowers engine power - something Allison is hopeful they can claw back at the Yas Marina Circuit.
"Our first version of the Coanda system is rather power hungry," he added.
"With Renault Sport's help we expect to claw back around one third of the loss in Abu Dhabi, and would be able to get around half of the loss back eventually.
"We aim to introduce an exhaust pipe that keeps all of the Coanda downforce benefit, but sheds some of the horsepower penalty that we suffered with for our first iteration design."