Hour Attempt in Bordeaux
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URL: https://forum.bhpc.org.uk/forum_posts.asp?TID=4608
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Topic: Hour Attempt in Bordeaux
Posted By: KeithD
Subject: Hour Attempt in Bordeaux
Date Posted: 20 May 2012 at 3:37pm
Some of you may know Aurélien Bonneteau from the World Championship last year at Monza, or from Jersey the year before - this friday he's making an attempt to set a new unfaired hour record at the velodrome in Bordeaux. He'll be aiming to better the the current WRRA record of 52.074km by using this very slick looking & minimal bike: This bike looks faster than the M5 High Racer he set the WRRA record with - but will it and the rider be fast enough to beat the UCI's best effort record (56.375km) set by Chris Boardman? If this happened, would it be a recumbent beating and upright, or a Frenchman beating an Englishman? |
Replies:
Posted By: AlanGoodman
Date Posted: 20 May 2012 at 9:13pm
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Oooooooh that looks nice!! ------------- |
Posted By: KevinJ
Date Posted: 20 May 2012 at 9:41pm
In the lax rules that BHPC have - I'd like to point out that it doesn't even have a brake as pictured - therefore would not be allowed to compete! 
------------- Kevin Jenkins Windcheetah |
Posted By: graydog
Date Posted: 20 May 2012 at 9:45pm
| fixie :-) |
Posted By: Yanto
Date Posted: 20 May 2012 at 9:59pm
| strange shaped chain ring! I wonder if the shape causes a an acceleration/deceleration as it's a fixie with no dereailleur to take up thetension/ slack, unless there is a tensioning device under the front of the seat out of view? |
Posted By: LeeW
Date Posted: 20 May 2012 at 10:15pm
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It's not a fixie, it's singlespeed. ------------- Current fleet: Milan SL MK2 #027, Fujin SL II, Beany! |
Posted By: graydog
Date Posted: 20 May 2012 at 10:15pm
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Strang shape round ??? That chain is tensioned either way..... But might nit be. Fixie.... Sorry Check the poss brake blocks in frame back of the seat... |
Posted By: KevinJ
Date Posted: 20 May 2012 at 10:20pm
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There might be brake blocks (I can't see them) - Where are the levers? ------------- Kevin Jenkins Windcheetah |
Posted By: SteveArmstrong
Date Posted: 20 May 2012 at 10:35pm
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There's a side image of the chain ring here, http://www.recumbents.com/wrra/records.asp?MoreInfo=Yes&ID=48" rel="nofollow - http://www.recumbents.com/wrra/records.asp?MoreInfo=Yes&ID=48 and here's a vid of a more extreme truncated ring, http://www.youtube.com/watch?v=T710KPz8kOw&feature=context&context=G28da75cRVAAAAAAAABw" rel="nofollow - http://www.youtube.com/watch?v=T710KPz8kOw&feature=context&context=G28da75cRVAAAAAAAABw you can see the derailleur moving. ------------- When you pull the cats tail, you get the whole cat. |
Posted By: LeeW
Date Posted: 20 May 2012 at 11:04pm
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I asked the maker, it has no brakes but as it's for a record attempt where he is the only one on the track, it don't matter, I asked how he will stop, he said just coast and then grab the gaurdrail on the inside ------------- Current fleet: Milan SL MK2 #027, Fujin SL II, Beany! |
Posted By: legs_larry
Date Posted: 21 May 2012 at 12:33pm
Shiny thing make everything better 
------------- ==================== a bit ov a lyv wyr by slof standirds |
Posted By: KeithD
Date Posted: 24 May 2012 at 8:51am
They certainly do!  Another shot of the bike for tomorrow's attempt in it's native environment - along with some controversial pedals!  http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash3/540347_3638474132611_1597006657_2812944_1132580356_n.jpg" rel="nofollow - http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash3/540347_3638474132611_1597006657_2812944_1132580356_n.jpg The big question is, with these pedals, is the bike still unfaired? |
Posted By: Yanto
Date Posted: 24 May 2012 at 10:14am
| bike is, feet aren't, same as wearing an aero helmet on yer feet! Tweaking is what i call it! are there any rules regarding size of aerodynamic aids and where they are placed?? |
Posted By: graydog
Date Posted: 24 May 2012 at 10:29am
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pushing the boundary!!! is it functionally needed to complete the task it was design for, i.e. a pedal? If this can be answered ‘ it is an integral part of the pedal ’ then fine, design to take the force of the rider and spread the load proportionally. However, “ is an add-on to an existing pedal” if yes, then no the extra part is clearly designed and fairing. Therefore, imo, does not comply with un-faired to be fair…….. still very nice |
Posted By: Adrian Setter
Date Posted: 24 May 2012 at 10:48am
Hmm. Perilously close to UCI-esque arguments such as "disc wheels good; wheel discs bad".
------------- Challenge Hurricane - MicWic Delta (Front half) - Burrows Ratracer |
graydog wrote:Posted By: graydog
Date Posted: 24 May 2012 at 10:54am
nope, disc have in effect an infinite number of spokes which are functionally needed to hold the rim away from the hub  UCi regs rocks 
|
Posted By: Adrian Setter
Date Posted: 24 May 2012 at 1:11pm
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According to UCI (expensive) disc wheels are ok, because the flat surface is structurally necessary for the wheel; (cheap) add-on wheel discs/covers aren't because they're aerodynamic additions.
To open another can of worms, "spokes don't hold the rim away from the hub: they suspend the hub from the rim". Discuss. ------------- Challenge Hurricane - MicWic Delta (Front half) - Burrows Ratracer |
Posted By: fards
Date Posted: 24 May 2012 at 1:13pm
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they look like carbon "crocs" to me... hmm now there's an idea :D |
Posted By: graydog
Date Posted: 24 May 2012 at 4:11pm
ummm 9.81 |
Posted By: gNick
Date Posted: 24 May 2012 at 6:03pm
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Only 2 decimal places, hardly worth switching the brain on for calculations like that!
------------- gNick "I'm afraid it's definite, Mrs Banker - your son has bicycles" |
Posted By: graydog
Date Posted: 24 May 2012 at 6:10pm
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Did not want to tax any one :) |
Posted By: AlanGoodman
Date Posted: 25 May 2012 at 6:53pm
 ------------- |
Posted By: AlanGoodman
Date Posted: 25 May 2012 at 6:54pm
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Well done that man!!
Would be good to see him at WC2012... ------------- |
Posted By: graydog
Date Posted: 25 May 2012 at 7:11pm
| Get in!!! Well done |
Posted By: Yanto
Date Posted: 25 May 2012 at 8:26pm
| Give Slash a run for his money - again!!! but what gets me is, he has no muscles!!! anywhere!! how does he stand and pick up a pint let alone cycle so fast!? |
Posted By: KeithD
Date Posted: 25 May 2012 at 9:14pm
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I could tell you - but us people of normal height and build are sworn to secrecy! Besides there's got some benefits to being awkward and gangly :-)
|
Posted By: Yanto
Date Posted: 26 May 2012 at 8:26am
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Posted By: blogwat
Date Posted: 26 May 2012 at 8:42am
Thats where I'm going wrong I'm just awkward no wonder I'm not fast.  ------------- when your up to your waist in aligators they forget to tell you you've got to clear the swamp |
Posted By: KevinJ
Date Posted: 26 May 2012 at 10:45am
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Just looking back at the results - Rob English at Manchester in the 30 mins race managed 52.4km/hr - not a million miles away. That was in the Hachi - Would have been an interesting attempt ------------- Kevin Jenkins Windcheetah |