Flat Mount Disc Brake Dropouts
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When I design a frame, it's with a purpose, it's with reason, it's with experience. Each Appleman provides the very best frame: ride quality, durability, and design. When the flat-mount spec came out I saw some major flaws, or "room for improvement". Always one to think outside the sphere, I designed the flat mount the right way... not the easy way.
What the heck is going on?
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The foundation of the Appleman flat mount is a 1-piece Stainless Insert: The brake threads into a lightweight stainless insert embedded in the frame (and avoids crushing your carbon frame). It mounts just like on the fork and has a flip/flop 140/160mm shim.
Why is the brake on the seat stay?
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Seat Stay: Mounting the brake on the seat stay allows for easy installation, extra heel clearance and smooth internal cable routing for the ultra-clean look Appleman is known for.
Why didn't you drill big holes in the chain stay?
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Strength! The chain stay is one of the highest stress tubes on the bike! No holes, no worries.
Did you just make it easier to adjust my brakes?
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Long-Term Adjustability: When you bolt a brake directly onto the carbon and heat it up, eventually that surface will lose flatness, especially with repeated adjustments. The stainless insert I use will take the heat (actually acts as a heat sink) and will stay flat for millennia.
