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TECH INSIGHT: Have Mercedes just changed the game with new steering wheel system? – Formula 1, Formula1.com

TECH INSIGHT: Have Mercedes just changed the game with new steering wheel system? – Formula 1, Formula1.com
        

F1 fans’ eyes were drawn to onboards of Lewis Hamilton’s Mercedes W 78 on Day 2 of 2020 pre-season testing at Barcelona, ​​as footage appeared to show him moving his steering wheel in the car to effect a change in the W ‘s attitude. Mark Hughes analyzes what’s going on inside the new Silver Arrows machine…

Mercedes created a stir on the second day of testing as an on-board camera showed Lewis Hamilton pushing and pulling on the steering column (as shown in the video above), using a mechanism that appeared to change the alignment of the front wheels.

Hamilton would pull the wheel back on the column as he drove down the straight (which had the effect of straightening-out the usual ‘toe-out’ of the wheels) and would then push it back just before the corner , at which point the wheels would adopt their conventional ‘toe-out’ setting.

Typically an F1 car will be set up so that its front wheels are aligned with ‘toe-out’, which simply means that they splay out at the bottom away from the center of the car, with the top pointing inwards.

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The reason they are set in this way is to create a tiny delay in the front tires loading up as the car is turned in so that the rear tires do not have too sudden an instantaneous load placed upon them, which would make the car feel unstable on turn in.

However, this means that on the straight the outer edge of the tire’s tread surface is being heated up more than is the remainder of its width.

If the Mercedes mechanism works as assumed, the tires will be heated more evenly across their width as they run fully upright, but the benefits of toe-out can still be deployed into the corner. It will be of particular benefit on circuits with long straights.

It appears to be a fully mechanical device, likely using the column movement to activate a lever acting upon the wheel hubs. It will add a whole new dimension to the tools available to the driver in trimming the balance of the car and looking after the tires.

The full picture of how exactly Mercedes ’system works will doubtless become clearer in the next few days. But one thing is clear: the reigning world champions certainly haven’t been taking their foot off the gas over the winter break…

F1 Testing: What the data tells us from Day 1     

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