Hello, I'm trying to find an equation that models the static and dynamic friction of a reciprocating (Note: NOT rotating) lubricated plunger. I'm just interested in the friction caused by the plunger and not the back pressure from its pumping action. This would involve thin film lubrication I...
That little amount of conc H2SO4 would rapidly mix uniformly throughout the electrolyte just on the basis of the concentration differences/gradient. That's a basic 2nd law of thermodynamics principle, a uniform concentration is lower order than two difference concentrations. Hence you wouldn't...
Sure, safety aspects aside (although at a guess you'd only need to add a few drops of conc H2SO4), are there any functional/operational problems in doing this that would affect the battery performance?
Contrary to the manufacturers recommendation why can't I top up an older Pb acid battery with concentrated sulphuric acid, rather than just using distilled water or even the standard 33.53% H2SO4 ("battery acid"), as the electrolyte level lowers? One of the major problems with older batteries is...
Can anyone explain the chemistry behind battery conditioner products like INOX that supposedly reduce sulphation? Their main constituent is Cadmium Sulphate, how does this reduce lead sulphate crystals from forming? The overall Pb acid reaction is:
PbO2 + Pb + 2H2SO4 <-> 2PbSO4 + 2H2O (2.041 V)...
>Alternatively reverse engineer the wheel studs.<
To do this with any accuracy I'd need to know what shear force factor of safety they used. This is also complicated by the fact the studs are designed to resist axial tension when tightened which also has it's own FoS no doubt. So there's both...
>Fifty g's max in the vertical direction is the most I've seen.<
Thanks, that's what I suspected, is this based on your own testing? if so was it a car or truck please?
>That's with a 50-60 hertz low pass filter. Further low pass filtering at around 40 hertz reduces that to maybe 40 g's max.<...
Hi,
I need to install some electronic sensing equipment to the wheel hub of various vehicles from a small car to a BW truck using the existing hub nuts/lugs. To determine how strong to make the casing and its mount I need to know approximately what sort of radial acceleration or g force, ie...
