[HS]

But im a little confused -
If u were going micro a 10 micrometre radius pump would be x1000 psi?   (P=F/A?) ?

Area = pi*r^2 = 3.1415926536*(10/1000,000 m)^2 = 3.1415927e-10 m^2 = 4.869478424e-7 in^2
Pressure = (Force/Area) = (1 pound force / 4.869478424e-7 in^2) = 2,053,608 psi
 

[goaty]

I couldn't follow the budget so well,  but 2 million pounds of force!  that's an optimistic one.
So I take it you can pop a car tyre with a skinny bike pump?? dunno...

I drew up a simple diagram of this pump im going to make to try and do this -   the plastic or whatever needs flexation for the inlet and outlet,  the outlet is flush against the piston, if this isn't the case then it wont hit full power against the opening to sneak the crack of high pressure air in.   

(second drawing  -  got it flush in and out.)

[HS]

If you have the right pump you sure can pop a car tier with your arm strength.

[MikeB]

Some Japanese researchers have done a really good human-style leg. Kengoro and Kenshiro are full-body musculo-skeleton robots that exercise.

This video shows the leg part at 0:20 sec.