Thread wear and failure
Thread wear and failure
(OP)
Hi, i'm really a computer guy but need some advice for a leisure time project, I am making a part for a new kind of adjustable headstock for a bicycle. The handlebars will be able to be turned parallel to the frame making it easier to store and transport with just a few rotations of a nut which slackens the arrangement and allows the rider to rotate the handlebars 90 degrees. The operation requires that a bolt will be screwed handtight in and out of a thread that will be cut internally within a tube/pipe. Over its lifetime it will be screwed in and out 1000's of times (although never actually leaving the thread entirely) I have been told that i could have problems with the amount of usage in relation to the thread. Any thoughts or comments would be much appreciated





RE: Thread wear and failure
RE: Thread wear and failure
Steering, breaks, wheels... all kind of important for controlling the bike, which is kind of important for personal safety. Personally, I would stay away from a home-made modification to these parts of the bike.
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RE: Thread wear and failure
I doubt you could build a new kind of headstock arrangement that can be tightened enough by hand ... unless it was positively located (lockable into two or three distinct positions).
I don't see how fiddling with the headstock could compromise the front wheel or brake though??
- Steve
RE: Thread wear and failure
RE: Thread wear and failure
- Steve
RE: Thread wear and failure
RE: Thread wear and failure
RE: Thread wear and failure
RE: Thread wear and failure
RE: Thread wear and failure
I think what i would do is to calculate what kind of load your first thread will see. In a nut it is said that the first thread takes about 1/3 of the total force. What kind of force would a biker be able to create on the handle bar, 2000N in push?
RE: Thread wear and failure
They have to withstand alot of abuse and many cycles in their lifetime. I´m sure the threads in a an actuator gets worn, but it is after alot of cycles.
RE: Thread wear and failure
RE: Thread wear and failure
RE: Thread wear and failure
RE: Thread wear and failure
RE: Thread wear and failure