Do we need an on-line valve spring pressure calculator

[MadBill]

...Put simply:
Kilogram is a unit of mass, not force. A pound is a unit of force.
Some guy that got hit in the head with an apple happened to get a unit of force named after him….Sir Isaac Newton.
That’s why torque wrenches read Newton- Meters, not Kilo-meters…. (Metric humor)

And yet my all-encompassing conversion program includes both the pound and the kilogram under the "Mass" tab (kilogram and pound avoirdupois) as well as the "Force" one (kilogram force and pound force)...

[Kevin Johnson]

...Put simply:
Kilogram is a unit of mass, not force. A pound is a unit of force.
Some guy that got hit in the head with an apple happened to get a unit of force named after him….Sir Isaac Newton.
That’s why torque wrenches read Newton- Meters, not Kilo-meters…. (Metric humor)

And yet my all-encompassing conversion program includes both the pound and the kilogram under the "Mass" tab (kilogram and pound avoirdupois) as well as the "Force" one (kilogram force and pound force)...

Slug it out.

[MadBill]

That's too heavy (by ~ 32.174 times) for us simple folk, Kevin.

[SWR]

The latter discussion is an example on EXACTLY why I have issues with the conversion factors... MadBill, thanks for that, I'll try that one out and see if I get correct(er) values when using that..

[Loftfan]

Such a calculator now exists:

http://allmondmarine.com/valvetrain-eng ... -services/