3D printed bike

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Tijmen in reply to @ectoplasmosis

The main structural reasons for PM over IS is that the materials of bolt and mount are better suited to absorbing the braking loads into the fork or frame than with IS. The bolts themselves are loaded in tension which is where they're strongest but on IS mounts they have to deal with a shearing load which is where they're actually the weakest. PMs also require less material to be used in the frame/fork construction and so you end up with marginally less weight. I believe when Fox went from IS to PM in 2008 they claimed something like an ounce of weight reduction in the lowers.

https://www.pinkbike.com/forum/listcomments/?threadid=127672

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ectoplasmosis in reply to @Tijmen

That's all well and good, but surely if you're using a PM caliper with an IS adapter you're negating both the advantages listed?

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Tijmen in reply to @ectoplasmosis

Yes, but it would have solved the problem of the stays being nowhere near the mounting points of a PM caliper. But instead of that Phil came up with a more practical solution, cutting up a PM braze-on:

About the same effect as the 3D printed solution I posted but a lot less involved for me, lots of filing for Phil though. This and more fun in my current projects thread.

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