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Flying Scotsman's "Beastie" to be first human-powered vehicle to achieve 100 mph on the flat?

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September 10, 2012

Cycling legend Graeme Obree hopes his latest innovation will not only break the human-powe...

Cycling legend Graeme Obree hopes his latest innovation will not only break the human-powered vehicle land speed record, but also break through the 100-mph barrier (Photo: Humans Invent)

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Scottish cyclist Graeme Obree is building a special sort of bicycle. He's building it in his own kitchen without a lick of research assistance to inform the design. Why might research assistance be useful? Because with this bicycle, dubbed Beastie, Obree intends not only to break the human-powered vehicle land speed record, but also hopes to be the first person to break 100 mph (161 km/h). But then, Obree's never been one to do things the easy way.

Which isn't to say Obree's an underdog. He has form in both building his own bicycles, and then riding them. Fast. In 1993, then unknown, he became the man to travel farthest in a one-hour period (51.596 km or 32.060 miles), and in 1994 he did it again (52.713 km or 32.754 miles) having seen his record broken by Chris Boardman in the interim. He recorded the first feat on a self-built bicycle, Old Faithful, which famously used bearings taken from a washing machine. These achievements led to his nickname, The Flying Scotsman.

Old Faithful demanded an apparently ungainly riding style thanks to its handlebars being located much closer to the saddle. These would sit under Obree's chest, his arms tucked in by his sides. It may have looked peculiar to the casual observer, but the technique afforded marginal aerodynamic advantages, which, combined with his willingness to push his body beyond its limits, led to record-breaking performance. Cycling authorities banned the riding position soon after.

Obree actually failed his first attempt in 1993, but was allowed a second stab the following day having booked the velodrome (Hamar in Norway) for 24 hours. To prevent his muscles from seizing up entirely in between attempts, he took the remarkable step of drinking large quantities of water, physically forcing himself to wake up in the night to visit the bathroom, stretching his muscles in the process. He'd reportedly hardly slept at all before his second attempt the next day. "I was a different animal," he later told The Telegraph. "The day before, I'd been a mouse. Now I was a lion."

Between 1993 and 1997 Obree won numerous events and titles, including the individual pursuit world championship in 1993 and 1995. He'd adopted a new riding style by 1995, dubbed Superman due to the arms-first position adopted, though this was also subsequently banned. A professional cycling career was cut short after a falling out with the team manager at Le Groupement, and later, he says, his refusal to go along with doping. All of which is to say nothing of the considerable adversity Obree has faced in his personal life.

In 2012, in the days leading up to his 47th birthday (on Tuesday), Obree has again been doing things the hard way. This time he's building a prone bicycle, which isn't unusual for the land speed record. That he's eschewing external help is hardly surprising either, given his history in the sport, but there are other obstacles to overcome. Not least of these is missing the window for a scheduled meet at Nevada's Battle Mountain because the bike, Beastie, you'll recall, isn't quite ready.

Now Obree has the task of finding an alternative venue in the UK, preferably an airfield with a 2-mile runway made of fast tarmac, with no joins or blemishes. But this means doing without some of Battle Mountain's luxuries: a 6° gradient in the rider's favor and a 5000-ft (1500-meter) altitude, reducing drag. "In an engineering journal I read, they said that Battle Mountain is worth 156 watts extra in energy," he told Humans Invent. "And that is just the slope. Then the surface is actually purposefully built for the record attempt, so that has to be worth another fraction in terms of surface resistance."

Though Beastie is yet to be completed, Obree says he's "really happy" with its aerodynamics. In fact, the bike in general is every bit as innovative as Old Faithful. Critical to the design is a compact frontal area, which necessitates an incredibly contained riding style. He claims this is one of the smallest bikes every created as far as frontal area goes.

"The feet just miss each other on the way past which means the width at the back is the minimum possible so the vehicle can be tailed of short," Obree told Humans Invent "Also it means the knees are closer together and partially share the same space at the bottom of the stroke which means that the skin can be tucked in closer, and that means less frontal area."

This sacrifices the direct drive of the rear while, necessitating a series of chainwheels—the theory being the loss in efficiency in the drive mechanism will be more than offset by the aerodynamic advantage. And the pedaling action isn't circular, but a push/pull arrangement which, as Obree said, reduces the need for the rider's knees to dip, also boosting the aerodynamics.

Perhaps the most eye-catching feature of Beastie is its clear skin, and for this Obree did receive some outside help: from The Glasgow School of Art. He says he wants people to "see the engine," by which he means the rider.

It sounds like only tweaks remain to be made. A shoe-plate here, an elbow guard there: potentially crucial tweaks when seeking to break 100 mph, to be sure, but nothing that affects the principle behind the bike. A time and place for the record attempt are yet to be confirmed, but there's a limited window before the British winter sets in.

"To be honest, I am happy it will be a British attempt now. Designed in Britain, made in Britain and broken in Britain," Obree told Humans Invent. "This also means that we can go for the world human-powered land speed record, and also the British human-powered land speed record."

Of course whether he will crack the 100 mph mark, or even the record, remains to be seen. But he's clearly set his mind, and, more importantly, his will to the task, and that usually means only one thing. I certainly wouldn't bet against him.

In the video below, Obree talks to Humans Invent about breathing. Clearly, Obree's as keen to refine human performance as he is bicycle performance.

Sources: Humans Invent and Graeme Obree

Images and video courtesy Humans Invent

About the Author
James Holloway James lives in East London where he punctuates endless tea drinking with freelance writing and meteorological angst. Unlocking Every Extend Extra Extreme’s “Master of Extreme” achievement was the fourth proudest moment of his life.   All articles by James Holloway
10 Comments

So this record can be completed on a downhill course ie Battle Mountain at 6 degrees.

Surely then find a steeper hill , get rid of the pedals and really go for it.

I would have thought a record such as this only really counts on a flat track with no wind at an altitude or air pressure within certain known bounds.

I wish him luck as anything at 100mph is getting quite dangerous.

Stephen Colbourne
10th September, 2012 @ 07:40 pm PDT

Further searching revealed the slope is not quite so steep as stated

ie: 170 foot drop in 5 miles = 0.6439% grade overall

Mile Marker

(mile) Elevation

(ft) Delta

(ft) Grade

(%)

5.0 4790 At Start Parking Lot

4.5 4777 -13 -0.49%

4.0 4761 -16 -0.61%

3.5 4744 -17 -0.64%

3.0 4723 -21 -0.80%

2.5 4703 -20 -0.76%

2.0 4682 -21 -0.80%

1.5 4664 -18 -0.68%

1.0 4649 -15 -0.57%

0.5 4632 -17 -0.64%

0.0 4620 -12 -0.45%

-0.5 4613 -7 -0.27%

-1.0 4613 0 0.00%

170 foot drop in 5 miles = 0.6439% grade overall

Stephen Colbourne
10th September, 2012 @ 07:52 pm PDT

On the one hand, I think Obree might be biting off more than he can chew this time, especially with his disdain for research. Unlike UCI-sanctioned records, IHPVA actively encourages pushing all boundaries of equipment design, within very few limits, so he's fighting an uphill battle against other minds that are already unconstrained. Personally, I would prefer a supine position that didn't put pressure on either ribcage or abdomen, maybe with a compact, aerodynamic periscope to keep the head low. But on the other hand, his out-of-the-box thinking on past occasions served him well. I don't think he'll succeed, but I wouldn't bet against him.

Gadgeteer
10th September, 2012 @ 11:29 pm PDT

"without a lick of research assistance"

are you sure?!

Keadaan Bisa
11th September, 2012 @ 03:11 am PDT

Yes, he is an amazing athelete and creative thinker.

But no research ? Why not ?

The prone bike design has been around for decades, so nothing new there. It has been abandoned by others due to the breathing and safety problems as mentioned by in Gadgeteer's post.

Periscopes have been used. Riding backwards. Riding in a fully enclosed opaque fairing with a camera... Maybe not everything, but many, many things have been tried.

Unless I'm mistaken, for now it's the Varna formula that's given the best results : small, lightweight recumbent bike with incredibly gifted, massively muscled, small rider = 82.819 mph. Which leads to the second question : the "engine".

It's been 20 years since Obree's upright records. 20 years ! In competitive cycling, not counting the first stage -- ages 0 to 20 -- this is like 200.

O.K. He's not 200 years old. Graeme Obree was born 11 September 1965. Happy 47th birthday today!

I wish him all the best.

duh3000
11th September, 2012 @ 04:35 am PDT

Happy birthday from me too.

If anyone can pull this off it would be Graeme Obree- I don't think his lack of reseach is wilful ignorance, he has always been one to challenge convention- and succeed on his own terms.

Whether he succeeds or not, I take my hat off to him- the world needs mavericks!

bergamot69
11th September, 2012 @ 09:37 am PDT

agree Bisa. maybe no actual clockable research time, but the general ideas have had to have come before him. That skin, for instance....no one ever researched that and the result was there for him/? I think mostly what he brings is a good physique and some common sense for utilizing previous art. This is a course of design I heartily approve of, less you think I am slamming him. I merely want to correct the writing.

Would it be proper to do a 4 man 100mph bike? or is there a rule of one man per speed record run?

and then there is the oft neglected no-circle knee movement...treadle is still overlooked...and no good reason...again a good choice of pre-existing art.

Walt Stawicki
11th September, 2012 @ 11:06 am PDT

That breathing technique reminds me of my father's description of his pedaling technique when he escaped from East Germany on bicycle as a teen-ager. He used a three phases pedaling cycle for better endurance.

Victor Engel
11th September, 2012 @ 11:27 am PDT

OK, I'll say it--I for one *would* bet against a 47-year-old, no matter who they are. No one, absolutely no one, gets more physical potential as they age. Needs a better engine for this attempt.

Arf
12th September, 2012 @ 01:27 pm PDT

If you drop it from a plane from 30kft I am sure you can break the 100mph barrier!

Sam Joy
14th September, 2012 @ 08:10 am PDT
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