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In light of the new ZTA version soon to be released, we will be lowering the price of the standard vertebrae 96% alumina ceramic housing. As of the 10th of March 2010, they will retail at just 99 Euros per kit. The only down side is that due to the substantial price drop, we aren’t left with a significant margin for international distributors (yes they cost that much to manufacture). Therefore, you’ll have to purchase them directly from our online shop (or speak with us over the telephone and order a set that way). |
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We’re pleased to announce the launch of our latest model vertebrae cable housing, called “Vertebrae ZTA”. These are made of the ultimate ceramic material, zirconia toughened alumina (ZTA). ZTA is considerably stronger and tougher than our standard 96% alumina. |
| Due to the exhorbitant cost of this material, we have an extremely limited production run, enough for 6 brakesets and 6 gearsets. The ZTA editition is available in all the standard colours and will be on sale at the end of April 2010. If you would like to place an advance order, please contact us.
More about the ceramic toughening mechanism in ZTA:
Transformation toughening was a breakthrough in achieving high-strength ceramic materials with a high value for the fracture toughness. For the first time, a ceramic material was available with an internal mechanism for actually inhibiting crack propagation. A crack in a normal ceramic travels all the way through the ceramic with little inhibition, resulting in immediate and brittle fracture and catastrophic failure. Transformation Toughened Zirconia (TTZ) exhibits a fracture toughness (or resistance to crack propagation) which is 3-6 times higher than normal zirconia and most other ceramics. TTZ is so tough that it can be struck with a hammer or even fabricated into a hammer for driving nails. The stress intensity factor values for window glass (silica), transformation toughened alumina, and a typical iron/carbon steel range from 1 to 20 to 50 respectively.
Components manufactured from Zirconia Toughened Alumina (ZTA) show considerable improvement in strength and toughness over alumina engineering ceramics. The increase in strength and toughness in ZTA is attributable to the stress induced transformation toughening mechanism which is introduced with the addition of optimized amounts of fine zirconia particles dispersed thoughout the alumina body.

Typical zirconia content is between 10% and 20%. As a crack grows through the ceramic, the crystal structure of the zirconia particles in the region of the crack changes from the metastable tetragonal phase to the stable monoclinic phase. The change increases the volume of the particles by about 3-4% and produces compressive stresses in the alumina matrix. These stresses in turn close the crack and act as an energy barrier to further crack growth. The addition of zirconia to the alumina matrix increases fracture toughness by two times and can be improved by as high as four times, while strength is more than doubled. |
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We’re pleased to announce that we’re now using environmentally friendly envelopes on all our shipments. 2¢ from every € spent on these envelopes goes to the Plantemos para el Planeta foundation. These green envolopes are also made of ecological chlorine-free paper with recycled polyethylene bubblewrap.
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We recently sent out some some vertebrae test kits to a few big name bike mags to get reviewed. Namely: BikeRadar, Cycling Weekly, Arueda and PezCyclingNews. Look out for us in their “new product announcement” and/or “product reviews” section in the not too distant future! We are very much looking forward to hearing their opinions & feedback about vertebrae! |
| Also, we’d like to give a special thanks to those particular publications for merely giving us a chance. We previously thought it was easy to get considered for a review, now we know better. We are still looking for new opportunities with bike several other mag editors, but so far a lot of them have ignored our emails… |
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Vertebrae components is pleased to announce that we will be represented at Interbike 2009, which is held from the 23rd to the 25th of September this year. |
| You will find a complete set of vertebrae ceramic gear & brake housing displayed on Torelli’s showbike. Torelli is an official exhibitor and can be found at booth number 4054. Unfortunately we weren’t able to organise a demo bike in time for Eurobike… but we’ll definitely having something to show there in 2010. |
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If you have an official UCI ranking or belong to a professional cycling team, we are interested in hearing from you to discuss the details of our sponsorship program!
Other cyclists are also open to apply; please send us an e-mail / short letter about why you think you deserve to be sponsored and we’ll consider it. Remember that all sponsored athletes are effectively ambassadors to our company - that means you should be willing to represent Vertebræ, to talk about our products and their performance to other riders at each and every opportunity.


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If you would like to link to us, you can copy and paste the following html code into your website:
Link with transparent Vertebrae logo optimised for white backgrounds:
Link with Vertebrae logo optimised for black or dark backgrounds:
Vertebrae simple text link:
(feel free to change the anchor and title text for something more appropriate if you know how)
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Analysis of the lifespan of metal and ceramic mechanical components:
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This artifact is believed to have originated before the Quaternary period, but some time after the Pliocene to upper Miocene era. It was found buried on the Northern coast of Tenerife in the Canary Islands, a place not normally associated with these types of discoveries. |
| What’s interesting about these particular remnants is that vastly different various materials and fabrication methods were used throughout construction. The majority of the mechanism which is now brown in colour has been completely “fossilised” and is no longer functional. However, the white components have not experienced any visible signs of degradation. Upon closer inspection, this strange device works quite effectively - it is still able to resist compressive forces yet remains completely flexible. There is no sign of any cables in the immediate vicinity (possibly they were lost or stolen before burial), but this remarkable housing appears completely intact, despite being exposed to the elements for around 5-20 million years! |
Read the rest of this entry »
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Firstly, a big thankyou to www.light-bikes.de who posted this news story about Vertebrae last Monday the 10th of August. We are continuing to receive a great number of vistors through that article, as well as the additional forum comments!
Next we’d like to acknowledge Jason from fairwheelbikes for this excellent review.
Thanks also for the special mention by the following blogs: nippleworks, cozybeehive, allthingsfo and 2wheelspot (even though the tone of the last two were definitely tongue-in-cheek).
Here’s what people are saying about Vertebrae in other countries: Read the rest of this entry »
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Let’s face it: anyone who rides both on and offroad knows that even current road bikes have less-than-ideal brakes. With the advent of 8 and 9″ rotors, braided lines and quad piston calipers for downhill MTBs, “lame” is probably a better word. Road bikes are faster than their cross-country MTB counterparts, so they should really be equipped with more powerful brakes. In this article, this logic is questioned in depth. Read the rest of this entry »
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As of next month, Vertebrae is proud to introduce 4 new colour options:
• Grey
• Hot pink (UV reactive)
• Neon green (UV reactive)
• Glow in the dark
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Les is planning on attending Eurobike this year to represent Vertebrae Ceramic Components as a trade visitor. While we aren’t an official exhibitor, we’re planning on talking with exhibitors, distributors, retailers and of course the media while we’re there. We’ll also be taking along a few self-assembly kits for sale as well as some demonstration custom-made brake and gear lines. |
| Eurobike 2009 will be held at Friedrichshafen, Germany. Attendance should be from 2nd - 5th of September, 2009. If you’d like to get in touch with Les during the show, please feel free to call +34 605 56 2020 to arrange a meeting. |
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Vertebrae gear and brake housing assembly and installation instructions now available to download online in pdf format.
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To encourage a few international orders, I’m offering FREE GLOBAL SHIPPING but for a limited time only!! This offer applies to all orders placed before the end of January. Items will be sent airmail. |
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The human vertebral column is a segmented design composed of bone (which is essentially a ceramic matrix composite) and inter-vertebral discs made of cartilage (a complex polymeric material).
Just like our Vértebræ Brake Housing, the human spine is a flexible structure that can support loads that are many times its own weight. Read the rest of this entry »
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I have wanted to introduce new materials to the bicycle industry for some time. While ceramic bearings are now becoming more and more prevalent, these are a relatively standardised parts and have been used for over 30 years in the aviation / aerospace industry. I believe vertebrae components are pioneering in a way because [to my knowledge] they are the first ceramic part that have been specifically designed, created and mass-produced for bicycles. Read the rest of this entry »
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As many of you know, I am still in the testing phase for the brakes… They’re a lot less critical to longitudinal dimensional changes than the gear cables. Hence I was previously using ultra-thin mylar washers in between each one of the ceramic segments (to act as a buffer and thereby increase their ultimate strength when connected in series). The custom-made mylar washers were about the thinnest you can get and cost an absolute fortune, but even so, the braking became a little too mushy as a result. Read the rest of this entry »
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Knowing the surface area & stiffness constants for materials, the change in length of different housing can be compared to each other.
As cited elsewhere, sintered aluminium oxide possesses a Young’s modulus in the range of 300-400Gpa, while steel has a Young’s modulus of 210GPa. Even taking the conservative value 310Gpa for 96% Al2O3, these numbers indicate that all else being equal, vertebrae ceramic housing compresses 540% less than standard shimano gear housing (it has 360% more surface area and the material is 48% stiffer than steel to begin with). Put another way, that’s over 5 times more drivetrain accuracy.
Read the rest of this entry »
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