Many customers and cyclists ask the question before purchase: were the wheels tested properly, do they meet European quality standards??
In this article we try to answer this important question.
First of allI have to stress that CARBON-PRO wheels are made of Japanese TORAY carbon fiber, as the picture taken in the factory shows. 
 
On this picture you can see how many layers of carbon fibre they use to acieve the adequate stiffness on the rims. 35 layers carbon fiber at the spoke holes and the carbon rimgets 9 layersof Toray carbon fibre! And all that work is done by hand,this is why the carbon rim prices can not go lower. Toray carbon fibre from Japan is the best quality on erarth!
 
 
 
 
For a responsible carbon rim manufacturer, before they put a rim into bulk production, they will always do samples for testing first.
 
The carbon wheels testing includes the following testibg methods:
 
1. the spoke hole tension testing to make sure the rim is strong enough for building without a crack.
 
2. lateral stiffness testing to make sure the rim will not break when having force from the lateral direction.
 
3. vertical stiffness testing to make sure the rim will not break when having force from the vertical direction.
 
4. vertical destructive testing to make sure the rims (after building with hubs/spokes and tires) will not crack under a certain impact force.
 
5. braking testing. this is the most testing for road rims, but this testing is quite complicated. because this has big relations to what brake pads you are using.
 
 
In the case of CARBON-PRO carbon wheels these tests have been carried out before the producer starts bulk production.
 
However, I have to say that all the testing is done in the factory with the factorie's own equipment.
 
The producer is just as afraid to have quality issues as you are!
 
If there would be "bulk" problems with the products after purchase that would mean catastrophic consequencies for the producer. 
 
Now we are negotiating with a producer which has got SGS and CE quality certificate.
 
 
 

TPL_IN
Megjelent: 2018. február 17.
Találatok: 72

When I have found out that all! big name carbon frame or wheel "producers" "manufacture" in China or Taiwan (except maybe their very few types) , I was a litle pissed off. Each one of them states that they hand made it in Itali, or hand made them in the USA.. Yes, sure! The painting is made in Italy, so that they can call it by EU ruling Italian made or German made. Sad, is not it?

Why do I find this annoying?

Because they try to apply a 700-800 % profit rate!!  That is why it is pissing us off dear big name "manufacturers"! And because they preach about high engineering and innovation costs..

Dear big names...! This is not rocket science any longer. You do not have to re-engineer every frame every year, you are usually making smaller alterations, but as long as the Toray carbon fibre is there for stiffness and you aply tryangles in the structure of the frame there won't be big problem my friends...

So in the last 10-15 years the very clever and hard-working Chinies aquired the knowledge and now the big names are starting to feel the pressure. Fortunately. Some snobs are stillbuying ther big name and same quality carbon frames or wheels, but there will be less and less applicant in the coming years.

Carbon frame quality and testing in China

 We recommend this video about Chinies carbon wheel manufacturing and testing. As you can see these hard-working workers are not any worse than their  European or American colleges...  

Every big brand "manufactures in Taiwan or China

Giant: http://www.canadiancyclist.com/races12/taiwan/parttwo/index.htm

Useful article about the topic: http://inrng.com/2012/02/who-made-your-bike/

 

 

 

 

TPL_IN
Megjelent: 2018. február 12.
Találatok: 99