Extreme lean angles in motorcycle racing

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Extreme lean angles in motorcycle racing
2Snap

Extreme lean angles in motorcycle racing

Extreme lean angles in motorcycle racing

Extreme lean angles in motorcycle racing

Extreme lean angles in motorcycle racing

13th pictures

Extreme lean angles in motorcycle racing
Gori

1/13
Lie down in the curves…

Extreme lean angles in motorcycle racing
fact

2/13
…is probably the greatest passion of motorcyclists.

Extreme lean angles in motorcycle racing
fact

3/13
A good incline needs to be practiced and tested.

Extreme lean angles in motorcycle racing
Dunlop

4/13
Once you’ve got it, nothing can stop you.

Extreme lean angles in motorcycle racing
Cathcart

5/13
“Leaning tables” in a casual way.

Extreme lean angles in motorcycle racing
fact

6/13
Good knee protectors are warmly desired.

Extreme lean angles in motorcycle racing
2Snap

7/13
The small classes – here still a 125cc – do not drive the greatest lean angles, but the highest speeds at the apex of the bend.

Extreme lean angles in motorcycle racing
archive

8/13
These two curves also cross at an angle.

Extreme lean angles in motorcycle racing
Simninja Photo Design Agency – Daniel Gusche

9/13
Nikolai Krasnikov, seven-time ice speedway world champion and currently on the way to the eighth title, surpasses the 70-degree limit on well-groomed ice. It is also noteworthy that he still sits relatively loosely on the motorcycle under the extreme load from the centrifugal forces. The man is perfectly in tune with what he is doing.

Extreme lean angles in motorcycle racing
xface.com

10/13
“It doesn’t drive anymore, it does crash”, skeptical viewers of this photo will say. Supermoto driver Dani Ribalta doesn’t crash, just almost. Go to www.youtube.com to prove it, “Supermoto no limits 2.0″ Enter as a search term – and be amazed. In the course of the video, the stunt is really elegant and fluid.

Extreme lean angles in motorcycle racing
Taglioni

11/13
They must be made of reasonably solid, loamy earth material, the residents who can withstand such driving maneuvers. KTM works rider Jeremy van Horebeek performed magic at the team photo shoot at the beginning of the 2012 season and plowed multiple blades: with the tires, the left foot and the left handlebar end.

Extreme lean angles in motorcycle racing
archive

12/13
In the case of lean angles, the following applies: the thicker the tires, the more oblique the position.

Extreme lean angles in motorcycle racing
2Snap

13/13
MotoGP world champion Casey Stoner and his colleagues are not the weirdest of all motorcycle athletes. But when it comes to the friction pairing rubber on asphalt used by most motorcyclists, the road racing elite are world leaders when it comes to sloping positions.

Sports & scene

Motorsport

Extreme lean angles in motorcycle racing

Extreme lean angles in motorcycle racing
Lean angle: with the motorcycle 62 degrees and more

How inclined can you ride a motorcycle? MOTORRAD has looked around the aces of various motorcycle sports and discovered downright ludicrous situations. It doesn’t matter that the closest possible proximity to the horizontal is not always based on the interlocking of rubber and asphalt. Sometimes nails or earth walls have to help.

Ralf Schneider

03/29/2012

MotoGP tires are wide, highly arched, almost balloon-like structures in cross-section. They should interlock with the road surface, flow into their roughness, as it were, and do so as evenly as possible over a racing distance of around 120 kilometers. Hence its width. It ensures grip and sufficient wear volume. 195/650 R 16.5 is the size of a rear tire that is mounted on rims up to 6.5 inches wide. The number 650 does not stand for the height as a percentage of the width, but for the diameter of the tire. It is larger than a road tire of the dimension 190/55 ZR 17, although the racing tire runs on a 16.5-inch rim. Its cross-section is therefore much higher than that of the standard tire, because the racing tire is supposed to do more suspension work in extreme lean angles; it absorbs small bumps and waves before the spring elements respond.

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Extreme lean angles in motorcycle racing

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Because the racing tires are so wide and high, you can not only drive them on enormous lean angles, you have to. Because the wider the tires are, the more their contact patch moves in an inclined position towards the center of the curve, and the effective curve radius is reduced.

At the same speed as a motorcycle with narrow tires, the wide-tire machine must be driven much more diagonally, an effect that is reinforced by the deformation of the tall tire.

MotoGP world champion Casey Stoner has a good grip with his Honda on inclines of over 60 degrees. Stefan Bradl, the newcomer to the premier class, also drove up to 61 degrees in the last pre-season tests in Jerez, southern Spain. Another value is almost even more impressive: Even in the lower gears, the aces give full throttle at about 39 degrees of incline at the exit of the bend. The best Moto2 pilots already dare to do this at 46 degrees, the less motorized Moto3 elite even at 48 degrees.

Completely different interlocking effects help the ice speedway drivers to inclines of over 70 degrees. You trust in the spikiness of steel spikes, which can be up to 28 millimeters long and which are screwed into the front and rear tires in large numbers with washers. The front wheel is guided by around 130 spikes, and up to 200 of the needle-sharp steel nails are screwed into the rear – the regulations give the riders a free hand with the number of spikes. The lean angle is naturally limited by the prescribed tire sizes – a maximum width of 100 millimeters, a maximum rim diameter of 23 inches at the front and 21 inches at the rear.

And then it is important to generate as much lean angle as possible on the left when building the motorcycle. With top riders, however, there is also a natural limit: the rider’s left leg, which has to stay somewhere between the motorcycle and the ice surface.

Only a few little things are still missing: courage, routine and the physical ability of the driver to withstand the enormous centrifugal forces. If you look at photos from the last ice speedway GP races, you will see that there are gradual differences in the lean angle even within the elite. The multi-world champion Nikolai Krasnikov, who is almost flat on page 121, is visibly keeping a few degrees more inclined than his competitors.

Spanish Supermoto rider and instructor Dani Ribalta and KTM works rider Jeremy van Horebeek use other special techniques in motocross. Ribalta doesn’t actually drive diagonally, it slips diagonally. At the apex of a curve he drifts sideways on elbow and knee protectors as well as his boots, remains on the gas and manages to straighten the motorcycle again and continue driving by counter-turning the front wheel. It doesn’t always work smoothly, but if it succeeds without brutally re-hooking the sideways sliding tires, it has a wonderfully playful elegance.

In supermoto races, Ribalta would lose too much time with this driving technique. There the curves are approached while drifting, but by no means with such extreme lean angles. It is always faster to get up again and accelerate as early as possible, and that is only possible if the driver has to emerge from a not too deep position.

Motocrosser van Horebeek uses a so-called adjacent slope for almost 90 degrees of inclination, i.e. a gradually raised steep wall curve, which gives him two advantages: Firstly, it supports the centrifugal forces and secondly, when approached halfway up, it creates space for the inside leg of the driver and protruding parts of the motorcycle. This space is also fully used here – the left end of the handlebar is already plowing through the ground. By the way, there is a further tightened variant of the adjacent drive: 88 degrees incline plus horizontal acceleration wheelie.

MotoGP

62 degrees: MotoGP world champion Casey Stoner and his colleagues are not the weirdest of all motorcycle athletes, as the following pages will show. But when it comes to the friction pairing rubber on asphalt used by most motorcyclists, the road racing elite are world leaders when it comes to sloping positions.

Ice speedway


Extreme lean angles in motorcycle racing


Zimninja

Nikolai Krasnikov, seven-time ice speedway world champion.

71 degrees: Nikolai Krasnikov, seven-time ice speedway world champion and currently on the way to the eighth title, surpasses the 70-degree limit on well-prepared ice. It is also noteworthy that he still sits relatively loosely on the motorcycle under the extreme load from the centrifugal forces. The man is completely in tune with what he is doing.

Supermoto


Extreme lean angles in motorcycle racing


xface.com

Supermoto driver Dani Ribalta.

64 degrees: “It doesn’t drive anymore, it falls,” skeptical viewers of this photo will say. Supermoto driver Dani Ribalta doesn’t crash, just almost. To prove it, go to www.youtube.com, enter “Supermoto no limits 2.0” as a search term – and be amazed. In the course of the video, the stunt is really elegant and fluid.

Motocross


Extreme lean angles in motorcycle racing


Taglioni

KTM works rider Jeremy van Horebeek.

86 degrees: They must be made of reasonably solid, loamy soil, the residents who can withstand such driving maneuvers. KTM works rider Jeremy van Horebeek performed magic at the team photo shoot at the beginning of the 2012 season and plowed multiple blades: with the tires, the left foot and the left handlebar end.

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