East Bench Composites Q and A
Hi Bykemike!
I hope to answer some of the questions in this thread and ultimately clear up any confusion on our processes. In the year and a half we have been in business, we have a PERFECT track record, and have repaired over 200 bikes without a single warranty claim. While our painting process are still evolving, our core competency is structural carbon repair, and in that regard we are quite confident, and we have many 5 star google reviews to prove it!
Reading this thread, I noticed some questions about our process. During our sanding our process, we do read the layup of the carbon as it was initially designed in the frame, and replicate this layup. This technique called SCARF sanding is used in aerospace industry repair to best replicate the strength and stiffness of the original design. Other companies use a single layup for every repair. This method neglects to account for the stiffness that comes from the geometry of the tube being repaired. (for example a chainstay that has a box shaped cross section that is 2"x1" can have a very different layup to a rounded one, and achieve the same stiffness. If the same layup was used for these two repairs, one would be much less stiff than the other, and neither would have the mechanical properties the bike designer intended. This is why we repair the way we do; to ensure proper strength and stiffness.
Additionally, we ensure all of our repairs are completed under the pressure and temperature requirements of the carbon/resin system being used in the repair. Our proprietary methods for doing this do not require us to strip the bike down either, saving time and money.
Please feel free to reach out to us through our website with any other questions you may have!
SIncerely
Jordan Weininger
CTO