MotoGP: No limits on internal winglet development
External winglets may have beeౠn forbidden - and homologated fairings made compulsory - for MotoGP in 2017, but that is not to say aerodynamic development will ce💝ase once the season has begun, race director Mike Webb has confirmed.
On the contrary, the 2017 rules have been written so as to allow each of the series' six manufacܫturers to alter the internal contents of any external ducts - like those seen at the preseason tests in Malaysia and Australia - meaning development, in all likelihood, will continue, albeit in a restricted capacity.
The decision to ban aerodynamic winglets from this season came mid-way through 2016, with MotoGP race direction citing safety concerns ove☂r carbon fibre sprouting out𝄹 of fairings in 'unnatural' places. What's more, a limit on excessive spending on this area was sought.
However, as was highlighted in a piece on Motomatters.com last week, the rulebook focuses on limiting the development of the 'external shape' of the fairing, a feature that must be homologated before the season o♍pener in Qatar.
The FIM Grand Prix regulations state that "Only the external shape, excluding the windscreen, is defined in this regulation, so the following parts are not co𒁃nsidered as part of the Aero Body: windscreen, cooling ▨ducts, fairing supports, and any other parts inside the external profile of the bodywork."
As Webb verified, it is what is 'inside the external profile' - "brackets, holders, vents"𓃲 - that can then be modified, depending on the specifications of each circuit layout.
"It's specifically in the description of the homologated fairing that's in the rulebook now," Webb told mahbx.com. "It says we're looking at the outside shape of the f♋airing, the outside profile.
porAprilia and Suzuki soon followed suit, displaying a revised aerodynamic package on day two at the Phillip Island test. Ducati, Honda and KTM are yet to show their hands, with many antic🌺ipating something fairly radical from the Bologna factory.
Webb told mahbx.com the ruling on whether a fairing complies with the r✤ules is somewhat "subjective", with the final decision falling on the shoulders of Dorna's technical director Danny Aldridge.
"Basically he [Aldridge] has got the right of refusal because it's almost impossible to write a technical definition of what is and isn't," said Webb. "A general def⭕inition that he's following is that the external shape of the fairing has to be more or less a traditional motorcycle fairing.
"What he's looking for is a smooth contour on the outside. It can be wiꦚder than i♒t was in the past because the rules allow up to 600mm wide. Most of the bikes weren't that wide. So they can make them wider. It's completely up to them but the outside contour has to be smooth, without things sticking out in points.
"By making the limit wider and putting the wings inside, it's completely legal. It also addresses our🎀 safety concerns about things sticking out of the bike. So that's fine. It's really up to him to rule on the shape.
"How radical, how sharply curved the outside can be before it's not deemed to be a traditionally smooth fairing. There has been some things submitted that have not been approved because they are clearly 𒅌don't have a cover on them, as opposed to a wider fairing with stuff going on inside. So it's a bit subjective. It's up to Danny."
With one homologation coming before the first race on March, 26th, just one other upgrade can be introduced. Factꦯories will then be permitted to alternate between the two homologations as they please (KTM, as a new manufacturer, is exempt from this rule).
"Whatever they start the season with, they can have one upgrade too whenever they want during the year," said Webb. "But that's it. Two for the season so that there is limited development,🔥 to try and keep a lid on it.
♑"Before we get to the first GP they have to decide on what they're going to start the s🧔eason with. And [they will] probably have an idea in the back of their heads about what their next upgrade is going to be.
"So you'll see a few different things now and in Doha. At the technical control for the Doha GP they have to say, 'This is our starting point fo𝕴r the year.'"
