tag:blogger.com,1999:blog-2523357558654725888.post1361068010575272987..comments2024-01-05T11:00:30.673-06:00Comments on DFW Point-to-Point: Carbon Bike Proof Testing – Part 2Steve Ahttp://www.blogger.com/profile/13650405341304401203noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-2523357558654725888.post-41879058244686261012010-06-17T23:46:01.535-05:002010-06-17T23:46:01.535-05:00Hey, thanks again for more carbon related stuff. T...Hey, thanks again for more carbon related stuff. The first part of the post made me despair that I wasn't smart enough to grasp load testing, but then the second half sorted me out! Well done.RANTWICKhttps://www.blogger.com/profile/15394479078513545568noreply@blogger.comtag:blogger.com,1999:blog-2523357558654725888.post-72162530824444269522010-06-17T21:37:43.256-05:002010-06-17T21:37:43.256-05:00Ham, keep in mind that 180lb aft load represents a...Ham, keep in mind that 180lb aft load represents a "1g" deceleration for a typical "non lightweight" cyclist. You will not be able to apply that much load to the fork with the brakes without probably flying over the handlebars, in which case you won't be worried about the fork.<br /><br />The impact load is intended to simulate a moderate pothole. I'm certain that either of us could find potholes that'd break any fork if we hit it at speed.<br /><br />The basic compression load is that 420lb load. I have not seen forks fail in that mode. I think the more common mysterious failure is the cyclist experiences a fork failure while braking, often after an impact that he may not have even noticed.Steve Ahttps://www.blogger.com/profile/13650405341304401203noreply@blogger.comtag:blogger.com,1999:blog-2523357558654725888.post-88899856572704710292010-06-17T08:01:51.001-05:002010-06-17T08:01:51.001-05:00Interesting - I'd say that my forks got that m...Interesting - I'd say that my forks got that most days with me on top combined with the London Roads. Except of course, that the impact/stress is all applied to the lower part. But, the attenuation of the force as a result of being at the bottom end of the arc is then compounded by speed. I must work out the moments involved hitting a 4" pothole at 15mph on a 26" wheel.Hamhttps://www.blogger.com/profile/17182921009517833997noreply@blogger.com