Suzuki, at least as recently as 2009, has provided a table of standard bolt torques in their motorcycle service manuals that refer to markings on the heads of metric bolts. Two values are listed for each bolt size. The first is for conventional (unmarked) or "4" marked bolts and the second for...
A picture of a tire valve showing how it works is at:
http://en.wikipedia.org/wiki/File:Schrader_valve_opening_and_closing_on_a_tire.gif
I'd assumed that this was rather well known.
Most but not all caps have a rubber seal of some sort, though it seems to be discussed as a dust rather than a...
I hadn't considered the force associated with the air inside the tire. My valve has about a .090" opening, which at 35 psi is about 100 gmf. This helps but isn't enough.
The centrifical force is outward, i.e. away from the center. This will try to open the valve.
thread404-18490
I've been looking at the centrifugal forces on motorcycle valve stem components at high speeds and found this old thread, which provides a basis for what follows. The specific thrust of this is that I've heard that the centrifugal forces can be high enough to unseat the valve...
These nuts are commonly used on drill presses to limit the drilling depth. Try Sears if you want to see one. They're also offered as quill nuts for lathes (there they have micrometer graduations for precise adjustment). I don't believe that they're suitable for true tightening as with a...
