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Read the paterek manual (free pdf available online) and try things out.
Learning by doing. Just don't do stupid things.
Crimping chainstays won't kill you but it might ruin the frame.
Hulsroy-
Learning by doing. Just don't do stupid things.
Crimping chainstays won't kill you but it might ruin the frame.That was my impression, basically! I don't have the money to risk it now so I'll leave it to the local place. But neither frame is expensive so maybe something I'll try in future when I have more money/spare cheap frames. Thanks!
Edit: I feel like at the very least I can do a better job than this guy
frankenbike
Thanks. I have enquired with a local repair/modification/framebuilding place.
Curious about this. I'm guessing this is the sort of thing you learn by spending years in a workshop with a framebuilder or in an engineering degree, but is there a book I can read or something? The internet tells me that framebuilding books are not very good and the internet is a better resource.
From basic materials stuff I understand that tube stiffness is proportional to tube diameter (along the direction of the force) hence if I crimp the stay they lose some lateral stiffness. But I just don't know enough about how important lateral chainstay stiffness is for a given frame. My own gut feeling is that a Kona Sutra uses cromo big-diameter tubes, is way overbuilt and is not crimped already, so given that other frames with smaller tubes have crimped stays, I'm fairly sure it can take it. But that's not very scientific.