Drinking From the Poisoned Chalice: MotoGP Aerodynamics

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I recently stumbled across this video on youtube. It's dry, but does an excellent job of summarizing current MotoGP aerodynamic paradigms.



The airflow management techniques revealed in the video are incredible, but they have also caused MotoGP to become less interesting to me, as I watch the manufacturers drink from the poisoned chalice of downforce development.

Unlike race cars, motorcycles are inherently unstable platforms that have exponentially more pitch and roll than their four-wheel counterparts. This makes aerodynamic downforce even more difficult to achieve. Furthermore, the development of aerodynamics within auto and moto racing have followed opposite trajectories. Motorcycle aggressively banned early aerodynamics (e.g. dustbin fairings) to reduce top speeds and performance, whereas automobile racing, particularly F1, embraced aerodynamic bodywork to increase drag.

Aero development will always be part of MotoGP because streamlining airflow while providing adequate cooling for engine and brakes is critical. However, if you link the various aero systems in this video into a single concept, the sport-destroying blackhole may become more evident. The manufacturers are playing with something they cannot control that has the potential to undermine the sport, bankrupt the participants, and make the participants much less safe.

It's alarming how little is being done (publicly, anyway) to push down the lid on this Pandora's box.
 
Great find, I look forward to reading this.

I know Marquez has said he'd like to see aero banned. Mainly because it makes the bikes unstable when in the pack.
 
Great find, I look forward to reading this.

I know Marquez has said he'd like to see aero banned. Mainly because it makes the bikes unstable when in the pack.


Off topic but speaking of being in the pack, why is it Yamaha seems to struggle the most with high front tire pressure when in the pack? Aren't the dynamics the same for everyone?
 
Off topic but speaking of being in the pack, why is it Yamaha seems to struggle the most with high front tire pressure when in the pack? Aren't the dynamics the same for everyone?

Well, I'm guessing its because they work the front more than others being a corner speed bike. The dynamics may be the same but the bikes are hugely different in their layout and how they use the tyre.
 
Well, I'm guessing its because they work the front more than others being a corner speed bike. The dynamics may be the same but the bikes are hugely different in their layout and how they use the tyre.


Makes sense, thanks. I've heard other riders talk about it but they don't seem to be as affected. Fascinates me how what to me seem small differences, have such an impact.
 
Well Maverick says they found something at Mandalika and he's excited for this one. I'm not ready to pick him for top 10 finish though I hope he proves me wrong. I'm wondering if/how much the revised schedule will affect the weekend.
 
Fantastic post on an overlooked topic.
I'm afraid you answered yourself though. It's spec fairing or a free for all. Hard to regulate what a wing is. Hate to be pessimistic but this truly is pandoras box and it can only get worse.
 
Fantastic post on an overlooked topic.
I'm afraid you answered yourself though. It's spec fairing or a free for all. Hard to regulate what a wing is. Hate to be pessimistic but this truly is pandoras box and it can only get worse.

It’s true that aero sophistication will never go away, and the teams will probably needlessly burn money trying to find an edge. Drag reduction will always be part of motorcycle racing. But I don’t think the situation is hopeless.

The FIM banned dustbin fairings a long time ago with simple regulations. Relatively simple rules could be used to close the lid on Pandora’s box. For instance, they could change the shape of the dimensional box such that wings are effectively eliminated. To get rid of Venturi bodywork, they could enforce a spec under tray.

These are not ideal solutions, but GP-level aero could not be more useless to riders on the street, and I doubt the skills utilized to increase downforce translate well to other road disciplines. The last thing motorcycle racing needs is a cult of aerospace engineers running the sport. Gotta make a move.
 
Fantastic post on an overlooked topic.
I'm afraid you answered yourself though. It's spec fairing or a free for all. Hard to regulate what a wing is. Hate to be pessimistic but this truly is pandoras box and it can only get worse.

Exactly, there are some that argue that a bike leaned over in effect creates a diffuser.
 
It’s true that aero sophistication will never go away, and the teams will probably needlessly burn money trying to find an edge. Drag reduction will always be part of motorcycle racing. But I don’t think the situation is hopeless.

The FIM banned dustbin fairings a long time ago with simple regulations. Relatively simple rules could be used to close the lid on Pandora’s box. For instance, they could change the shape of the dimensional box such that wings are effectively eliminated. To get rid of Venturi bodywork, they could enforce a spec under tray.

They could, but it would be difficult when you look at the variety of bikes and sizes in MotoGP. A Yamaha is a lot wider than a V4 bike, so if you make the 'box' wide enough for a Yamaha to have no fairings, then there is technically space for a narrower V4 bike to do so.

The last thing motorcycle racing needs is a cult of aerospace engineers running the sport. Gotta make a move.

Agreed.
 

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