|
|
Thread Tools | Display Modes |
#10
|
|||
|
|||
may or may not be 'tech'
On Sat, 19 May 2018 07:40:08 -0500, AMuzi wrote:
On 5/19/2018 2:34 AM, Jeff Liebermann wrote: On Fri, 18 May 2018 20:02:04 -0500, AMuzi wrote: Go though the linked brochure images. It's amateurish IMHO. I didn't see a link to a brochure. Maybe this is what you're thinking of: https://books.google.com/books?id=4bSABo8Akh4C&pg=PA105&lpg=PA105#v=onepage &q&f=false It sure doesn't look like it were made from any form of known plastic. Oh, now I see why: "Although this prototype had many steel parts, final model is scheduled to have plastic frame, forks, handlebars, gears, chain, hubs, and derailleur. Rim and cranks will be alloy." I wanna see the plastic gears in action. In other words, what you see in the "prototype" photo is nothing even close to what is described, planned, or expected. Try this catalog link: http://www.velo-pages.com/main.php?g2_itemId=27603 notably: http://www.velo-pages.com/main.php?g2_itemId=27633 http://www.velo-pages.com/main.php?g2_itemId=27633&g2_imageViewsIndex=1 In 1973, we didn't have Photoshop, so the pictures look like they might have been colorized in a darkroom onto film or paper using color filters. The sharp edges on the various parts suggest that the parts were not painted, which would have more rounded edges. The crankset shows threaded hardware, without metal inserts, which is unlikely to be the way a plastic crankset would be built. There's also no indication of any tooth wear, which is what I would expect with a plastic gear and a steel chain. The parts shown look exactly like the metal equivalents, which is too much of a coincidence to be believable. Plastic is much weaker than metal and therefore requires thicker parts, reinforcing ribs, and metal inserts. The resulting plastic bicycle would look very different, especially if the frame was molded or vacuum formed. For example: https://bikerumor.com/2015/12/28/the-placha-plastic-concept-bike/ https://inhabitat.com/colorful-frii-concept-bike-is-built-from-injection-molded-recycled-plastic/ http://www.yankodesign.com/2014/12/03/print-on-demand-bicycle/ http://www.yankodesign.com/2009/03/27/foldable-bicycles-how-real-today/ http://www.yankodesign.com/2008/10/20/a-new-way-to-bike/ http://www.yankodesign.com/2008/03/21/one-seriously-tight-light-bike/ http://www.yankodesign.com/2010/09/24/15-amazing-bicycles-for-the-future-of-seoul/ etc. Soon, everyone will be riding on mass produced plastic bicycles. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
R.B.Tech | K. Fred Gauss[_6_] | Techniques | 19 | July 3rd 10 12:14 AM |
Tech ? What Gives? | ohboy | Techniques | 0 | December 28th 05 05:52 PM |
Bike Tech at it's best! | Porky | Techniques | 0 | December 15th 05 12:49 PM |
Talking about tech? | magilla gorilla | Techniques | 0 | December 2nd 05 05:20 AM |
Hi-Tech MTB frame | Brett | Australia | 1 | February 9th 05 10:16 PM |