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Auré
Starting Member

France
48 Posts

Posted - 04/05/2012 :  07:24:42  Show Profile  Reply with Quote
I will attempt once again the hour record.
It will take place between the mid end the end of May at the Bordeaux-Lac wooden track.

I will use this selfmade bike :
There is some little things to finish but it will not affect the global aspect.

The first timed test were very fast, but as you know it's always hard to presume of the one hour covered distance.

Upright Mike
human power expert

USA
3492 Posts

Posted - 04/05/2012 :  07:29:44  Show Profile  Visit Upright Mike's Homepage  Reply with Quote
Hi Auré,
Did you build that bicycle?
Are those dual 700C wheels?
I hope you go very far and fast!
Mike
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Larry Lem
human power expert

South Sandwich Islands
2326 Posts

Posted - 04/05/2012 :  07:37:01  Show Profile  Reply with Quote
I spy an Osymetric chainring on a single-speed bike. How is the change in the chain-length through the rotation of the crank handled?

Larry Lem
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Larry Lem
human power expert

South Sandwich Islands
2326 Posts

Posted - 04/05/2012 :  07:40:31  Show Profile  Reply with Quote
Warren,
Consider this design for your new bike.

I've played around with my dual 650C bike to raise the seat bottom under my butt to flatten out the body position, but ran into too many problems. It would be easier to make a new bike. I see that Aure has already done that.

Larry Lem
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Auré
Starting Member

France
48 Posts

Posted - 04/05/2012 :  07:41:47  Show Profile  Reply with Quote
Hi Mike,
yes I built it with my hands.
This is 2x700c wheels.
I've already realise 54km/h average on 10 minutes some weeks ago. It was a timed laps test.
I hope to reach something between 54 and 55 km. But, I need all good.

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Larry Lem
human power expert

South Sandwich Islands
2326 Posts

Posted - 04/05/2012 :  07:42:01  Show Profile  Reply with Quote
Aure,
Can you take a pure side-view photo when you get the chance? That would be wonderful.

I hope you kick ass on the hour record!

Larry Lem
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Speedbiker
human power expert

USA
2515 Posts

Posted - 04/05/2012 :  07:44:33  Show Profile  Reply with Quote
Terrific design. When combined with your substantial wattage, I expect amazing results.
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Garrie L Hill
human power supergeek

USA
1464 Posts

Posted - 04/05/2012 :  08:37:03  Show Profile  Reply with Quote
Looks like he has shoulder clamps as part of the seat?

Garrie "carbon based lifeform" Hill
HPRA Co-Dictator of the East
for pics of some of my time and money sucking projects
http://garriehill.winkflash.com/
and
http://s58.photobucket.com/albums/g277/cfbb/
and videos
http://vimeo.com/5513519


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britCpower
recumbent enthusiast

USA
249 Posts

Posted - 04/05/2012 :  09:18:33  Show Profile  Visit britCpower's Homepage  Reply with Quote
Very nice design and it looks really fast. Good luck with your record attempt.

my blog
http://britcpower.wordpress.com/
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Auré
Starting Member

France
48 Posts

Posted - 04/05/2012 :  11:12:14  Show Profile  Reply with Quote
quote:
Originally posted by Garrie L Hill

Looks like he has shoulder clamps as part of the seat?

Garrie "carbon based lifeform" Hill
HPRA Co-Dictator of the East
for pics of some of my time and money sucking projects
http://garriehill.winkflash.com/
and
http://s58.photobucket.com/albums/g277/cfbb/
and videos
http://vimeo.com/5513519






Shoulder clamps can be unmouted, like the seat.
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Gugi100
New Member

Netherlands
79 Posts

Posted - 04/05/2012 :  13:05:38  Show Profile  Reply with Quote
Hi Aurélien,

This is a nice real purposely build bike. I think you wil go very fast.
The new delft design uses pelvis clamps. I think stabilisation a the pelvis is more logical then clamping the shoulders.

good luck!

Gr GJ
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Speedbiker
human power expert

USA
2515 Posts

Posted - 04/05/2012 :  13:52:59  Show Profile  Reply with Quote
Elminating torso movement is the key to power transfer. Excellent work, Aure.
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Zyzio
recumbent enthusiast

USA
150 Posts

Posted - 04/05/2012 :  15:19:05  Show Profile  Reply with Quote
Is the white fairing between the fork and seat hiding an idler, or it it strictly for smoothing the air flow?

Good Luck with your record attempt!!

PeterB
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warren
human power expert

USA
4944 Posts

Posted - 04/05/2012 :  15:28:26  Show Profile  Visit warren's Homepage  Reply with Quote
Wow Auré, that looks fantastic!
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randy
recumbent guru

721 Posts

Posted - 04/05/2012 :  15:45:02  Show Profile  Reply with Quote
Holy Shiite Muslim, Batman!
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Adam C
recumbent enthusiast

USA
227 Posts

Posted - 04/05/2012 :  16:29:01  Show Profile  Visit Adam C's Homepage  Reply with Quote
quote:
Originally posted by Auré

I will attempt once again the hour record.
It will take place between the mid end the end of May at the Bordeaux-Lac wooden track.

I will use this selfmade bike :
There is some little things to finish but it will not affect the global aspect.

The first timed test were very fast, but as you know it's always hard to presume of the one hour covered distance.



Holy cow this bike just looks bad azz! I hope you break the record, Auré!

Just curious why do you use RWD?



Edited by - Adam C on 04/05/2012 16:29:54
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steve
Starting Member

Canada
38 Posts

Posted - 04/05/2012 :  18:46:09  Show Profile  Reply with Quote
This looks Good. Really good.

No gears and no brakes?
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Larry Lem
human power expert

South Sandwich Islands
2326 Posts

Posted - 04/05/2012 :  18:50:05  Show Profile  Reply with Quote
one gear.

Larry Lem
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Runxner
recumbent enthusiast

USA
338 Posts

Posted - 04/05/2012 :  19:01:13  Show Profile  Reply with Quote
No shifters, no brakes. Très simple!

Did you build over a foam core, from molds, or another way.

Sheldon Brown he had a biopace either fixed or SS and the chain length doesn't change significantly. Half the circumference has the same count of teeth in any direction and same center. So the only difference is the minor change in tangent length from chainring to cog at different angles.

Team Low-Life
Lowracer Test Pilot/Evangelist
Adelaide, Australia
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Speedbiker
human power expert

USA
2515 Posts

Posted - 04/05/2012 :  20:03:00  Show Profile  Reply with Quote
Rwd, no idlers, good traction, super efficient. As the world's fastest nonfaired hour recumbent rider we can assume he knows what he is doing.
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steve
Starting Member

Canada
38 Posts

Posted - 04/06/2012 :  13:23:18  Show Profile  Reply with Quote
Yes, one gear. I stand corrected.
What I meant to say with no gears no brakes, is that it's a recumbent version of a fixed gear track bike.
It looks good, light, aero and very fast.
Is the current record Aure's from 2009 @ 52.074km?
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Larry Lem
human power expert

South Sandwich Islands
2326 Posts

Posted - 04/06/2012 :  18:12:09  Show Profile  Reply with Quote
Aure's a hipster - on the fixed-gear bandwagon.

http://recumbents.com/wrra/records.asp

It looks like he still owns the record.

Larry Lem
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Speedbiker
human power expert

USA
2515 Posts

Posted - 04/06/2012 :  20:09:58  Show Profile  Reply with Quote
Larry, take the Lemmy Spcl over there and show them how it's done!
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expedlar
Starting Member

United Kingdom
12 Posts

Posted - 04/07/2012 :  05:57:20  Show Profile  Reply with Quote
It is great you are going for record again! you might surprise your expectations and really do well with that set up.

On a passing note, looking at the records on wikipedia ( http://en.wikipedia.org/wiki/Hour_record), does anyone have any input into why unfaired recumbent record is so far behind the 'upright' UCI record: by some 5 4 kmph? ( Boardman's 56.375 vs Aure's 50.52 52.07) (info on wiki not up to date...)
Is it just rider fitness, or are recumbenter's missing something? Aero helmets? skin suits?

p.s Aure: hydrate as much as you can before you start your race- your urine should be nearly clear if you are. I am sure you know more than me, yet I have noticed great improvements in performance at races if I drink like a fish :-) (beware of stomach cramps though :-( )
Bon chance!

Edited by - expedlar on 04/07/2012 06:45:00
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Upright Mike
human power expert

USA
3492 Posts

Posted - 04/07/2012 :  06:38:03  Show Profile  Visit Upright Mike's Homepage  Reply with Quote
quote:
Originally posted by expedlar

It is great you are going for record again! you might surprise your expectations and really do well with that set up.

On a passing note, looking at the records on wikipedia ( http://en.wikipedia.org/wiki/Hour_record), does anyone have any input into why unfaired recumbent record is so far behind the 'upright' UCI record: by some 5 kmph? ( Boardman's 56.375 vs Aure's 50.52)
Is it just rider fitness, or are recumbenter's missing something? Aero helmets? skin suits?
...Bon chance!

I think the answer to that question is "the UCI record will not be that far ahead once Aure is finished with his ride!" And the correct difference is 56.375 (Boardman's UCI mark) - 52.074 (Aure's 2009 record) = 4.3 km. I helped author much of page on wikipedia including the UCI equipment descriptions. It still needs some touch-up work (or so Wikipedia says), so after Aure sets a new record on his machine I will go in there and change it to say new record on home-built machine!
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Upright Mike
human power expert

USA
3492 Posts

Posted - 04/07/2012 :  06:41:54  Show Profile  Visit Upright Mike's Homepage  Reply with Quote
Wow I see know that wikipedia is already outdated - they have Aure's old record (50.52 km) listed which you were referencing above. Its been broken 3 times since then. Here is the updated Unfaired Recumbent list on the WRRA Records Page
http://www.wisil.recumbents.com/wrra/records.asp
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