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^^The Lotus 108 is assymetrical too, but is also one of the most beautiful bikes ever created. If the date of the magazine is contemporary to the picture(November 1992) then the Yamaguchi post dates the Lotus by a few months and would have been developed at roughly the same time. In terms of technical advancement, beauty and pornworthyness they are at each end of the scale. The Lotus represents a Concorde moment for cycling(before the UCI discredited themselves by banning such machines) and the Yamaguchi represents, what looks like, a pile of scaffolding pipes thrown together on a Sunday afternoon, by a builder addressing the issue of offset loadings in an empirical fashion, without a clue to the actual science behind it.
Paricular features to note are the integrated handlebars, monobladed forks to front and back and the rear sprocket outboard of the chainstay.
Sorry if I have missed something.
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The Yamaguchi simply serves to illustrate that the bicycle frame is remarkably tolerant of clueless dicking about if you're prepared to throw enough steel at it.
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^^If you like it that much then it might be worth your while enrolling on one of Dave Yates frame building courses for a week and reproducing a copy of it for yourself. Not sure he would include you on his Christmas card list though!
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The Yamaguchi simply serves to illustrate that the bicycle frame is remarkably tolerant of clueless dicking about if you're prepared to throw enough steel at it.
That is one way of putting it! Whilst the Yamaguchi might be resilient enough for a track as smooth as a snooker table, it may not be robust enough for riding on our pot holed roads.
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That is one way of putting it! Whilst the Yamaguchi might be resilient enough for a track as smooth as a snooker table, it may not be robust enough for riding on our pot holed roads.
no. apparently, the guy who sed to be the us national representation framebuilder and who was carrying the olympic flame as the first framebuilder, is clueless.
i just fucking love this forum... -
Great framebuilder != great engineer
Mike Burrows is a great engineer, but I doubt that he could make an NJS frame as beautiful as a Yamaguchi. Different skills, innit? If you want something well made from a stock tubeset in a conventional geometry, you want a framebuilder. If you want to completely reinvent the bicycle frame in line with a rigorous analysis of the loadings, you need an engineer.
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The AIS Superbike is similar in design to the Lotus 108 and is shown along with a screen shot of the Finite Element Analysis for the frame. The points of highest stress are shown midway on the bottom edge of the main member and midway between the bottom bracket and the rear drop outs which is what an engineer would expect to see. It shows that the stresses are relatively even, with no significantly high concentrations of stress. The Yamaguchi would most probably show high concentrations of stresses, indicated by shades from red to purple which would concern an engineer. As much as I am a fan of steel frames(I have one carbon frame, one aluminium and a dozen steel frames), the beauty of carbon fibre over steel is the ability to add another couple of sheets of carbon fibre to reinforce areas of high stress, thereby evening the stress loadings.
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I don't want to own it, I like it that's all.
And I certainly wouldn't ride it on a potholed road.
I am sure Dave wouldn't let anyone endeavour to build something like that under his supervision.
(I will however try it if someone would sponsor me the four figures it would cost for me to participate!)
If some one where to sponsor me to go learn to build frames, I'd build em any damn frame they wanted, THEN get serious and build my own which I doubt very much would look like that! :D
(and if anyone wants to pay for me to learn carbonfibre frame building PM me!)
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1993 Raleigh Dyna-Tech Torus Plasma Arc Welded Titanium with Direct Control Fork
Particularly like the Timken angular contact bearings for the headset.
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1993 Raleigh Dyna-Tech Torus Plasma Arc Welded Titanium with Direct Control Fork
Particularly like the Timken angular contact bearings for the headset.
Not sure about the saddle position
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The AIS Superbike is similar in design to the Lotus 108 and is shown along with a screen shot of the Finite Element Analysis for the frame. The points of highest stress are shown midway on the bottom edge of the main member and midway between the bottom bracket and the rear drop outs which is what an engineer would expect to see. It shows that the stresses are relatively even, with no significantly high concentrations of stress. The Yamaguchi would most probably show high concentrations of stresses, indicated by shades from red to purple which would concern an engineer. As much as I am a fan of steel frames(I have one carbon frame, one aluminium and a dozen steel frames), the beauty of carbon fibre over steel is the ability to add another couple of sheets of carbon fibre to reinforce areas of high stress, thereby evening the stress loadings.
id suggest to continue this conversation after seeing mentioned koichi frame stress visualisations.
and both bikes are lust, although the lotus seems a little too extravagant for me. -
Quite enjoying the fact that the magazine is called 'Winning' and the little inset picture looks a little like Charlie Sheen..
^Is that Charlie Sheen on the front page of Winning magazine with the world champ shirt on?.If so,apt title.
Is there an echo in here?
It's [ame]http://en.wikipedia.org/wiki/Gianni_Bugno[/ame], by the way.
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Chris Boardman in the 1994 Tour de France Prologue on the Lotus Type 110, the road going version of the Type 108. Catching Luc LeBlanc was sweet revenge after LeBlanc's comments the year before, when he suggested that an amateur such as Boardman should not be attempting the World Hour Record.
http://www.youtube.com/watch?v=OjJ60Kx2j8I
Sorry if it is a repost.
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Tour de France-Chris Boardman 1994 Fastest Ever Time Trial!! - YouTube
Looks like the most brutal test of anaerobic fitness
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Bike porn
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@Velocio
Agreed...
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