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Originally Posted by Bazzokajoe
with metal braces and carbon t plate i have broken many many of my rear arms... anyone else experianced it? brake them less frequently than i used to break braces and t plates so i'm not too bothered... but it seems strange ... the arms break down the middle!!
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With a completely rigid rear chassis assembly as you have, the wishbones take all the force. It's an argument against the carbon T-piece at least.
I've considered a few solutions - drill out the braces and fit a tube of tougher material to hold the hinge pin, or tap a hole into the side of the braces and capture the pin with grub screws. A new T-piece is likely needed, anyway.