Comments on: Graeme Obree’s first test run in “the Beastie” http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/ The blog about industrial design in the bike industry Fri, 30 Jan 2015 14:08:30 +0000 hourly 1 By: Bob T http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-38287 Mon, 09 Sep 2013 22:58:23 +0000 http://bicycledesign.net/?p=3829#comment-38287 The fundamental difference is that it appears that his legs perform a kind of stepping motion as in climbing stairs. While I would have difficulty producing 0.5hp for any time on an exercise bike, I can run up stairs at a speed requiring 1-2hp suggesting that a stepping motion maximises the power available. This along with the absolute minimal frontal area of his prone position at least suggests to me that his design is an entirely rational one for maximum speed. I wonder if a complete fairing is best – after all it has to be big enough to contain the entire volume described by his moving legs which is of course greater than the volume at any instant ie the cross sectional frontal area of the fairing must be greater than that of his body and legs – if you see what I mean?

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By: Pete http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-37926 Tue, 30 Jul 2013 09:37:47 +0000 http://bicycledesign.net/?p=3829#comment-37926 Machrihanish runway was nicknamed the cheese grater due to the rough, high friction, quick draining surface on the runway. It ate aircraft tyres……. It’s a great place for trials as I cannot think of another more wind exposed and difficult runway to do trials…… When Graham takes on the world at a more suitable venue his speed will increase. I believe that Graham has the skills, strength and determination to take the record. Good luck.

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By: Jay http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31533 Mon, 10 Dec 2012 23:42:18 +0000 http://bicycledesign.net/?p=3829#comment-31533 I had no idea how high the record was. Almost 83 mph from a human powered vehicle seems almost unbelievable. I am excited to see how this turns out.

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By: art http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31301 Fri, 30 Nov 2012 15:02:08 +0000 http://bicycledesign.net/?p=3829#comment-31301 Humidity management is one of the reasons why some of the faster fully faired HPVs have the rider wearing a fighter pilot style air mask ducted to one of the wheel wells. It also avoids having big intake and exhaust vents, which would otherwise be needed to get sufficient oxygen turnover. Attempting the record in Scotland should alleviate some of the solar cooker concerns.

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By: James Thomas http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31245 Wed, 28 Nov 2012 19:38:18 +0000 http://bicycledesign.net/?p=3829#comment-31245 One of mine as well. I really am hoping that he can overcome the odds (yet again) and pull off the record.

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By: Mark Sanders http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31240 Wed, 28 Nov 2012 18:47:44 +0000 http://bicycledesign.net/?p=3829#comment-31240 One of my all time Heros :-)

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By: littleman http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31187 Tue, 27 Nov 2012 16:18:49 +0000 http://bicycledesign.net/?p=3829#comment-31187 Those kind of shells have a nasty habit of fogging up or turning into a solar cooker. In any thing like this there is always trial and error. The bike he breaks the record on (or not) may look nothing like this.

I wonder what the un-faired record is and would he have a chance at that one?

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By: | Graeme Obree’s Beastie undergoes full fairing trial | Velomobiles http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31101 Sat, 24 Nov 2012 18:48:44 +0000 http://bicycledesign.net/?p=3829#comment-31101 […] fully faired trials can take place and a Scottish venue has been found.  The Bicycle Design blog reported on trials that took place at Machrihanish in Argyle.  The site is a former RAF airfield with a 10,000 ft or […]

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By: Androo http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-31079 Fri, 23 Nov 2012 18:39:15 +0000 http://bicycledesign.net/?p=3829#comment-31079 Well, he only hit 40 mph with the skin off, in a low visibility situation with standing water.

That’s not to say that he will be able to break the record, but I think he’ll give it a good shot.

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By: Andy http://bicycledesign.net/2012/11/graeme-obrees-first-test-run-in-the-beastie/comment-page-1/#comment-30953 Wed, 21 Nov 2012 03:09:02 +0000 http://bicycledesign.net/?p=3829#comment-30953 I highly doubt it too. At 80+ mph, the aerodynamics will be the biggest factor by far. If you look at previous winning designs, they seem to be a smaller shell around the bike. Couple that with his odd drivetrain system that doesn’t seem like it’s offering any advantages, and it’s a longshot if he’s only maybe hit 40mph so far.

Maybe his initial concept to lay prone was in hopes of being more aerodynamic, but that doesn’t appear to have worked with this design.

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