On Thu, 07 Sep 2017 07:23:07 +0700, John B.
wrote:

Sigh. Inflate the desired tire at what temperature, with how much
effort, how quickly, to what accuracy, how big a tire, etc?
(...)

You missed the "desired tire to the desired pressure" ;-?

No I didn't. The word "Inflate" assumes that pressure is checked
(unless you subscribe to my hard, firm, soft, mush, flat empirical
standard for tire inflation without numbers.

Here's one application for an air pump with which I'm currently
working:
https://www.amazon.com/Carburetor-detector-Replaces-Tillotson-243-504/dp/B06Y542R9S
Yes, it's an air pump. It's used to apply pressure to the carburetor
fuel inlet on a 2 stroke engine (chain saw) to determine if the needle
valve is working properly and not leaking. Apply pressure and it
should open the needle valve at about 15 psi. Let it bleed down, and
it should close again at 5 psi. Pressurized to 10 psi and dunk the
carburetor into a bowl of water while looking for leaks (air bubbles).
A "good pump" should be able to do this as well.

Yup, we used to do that. Blow into the fuel line. While nobody's
cheeks were calibrated in psi it did tell you if the needle valve was
leaking. One did have to spit a bit to get the gasoline taste out of
your mouth though. :-)

Ummm... perhaps you shouldn't inhale with the hose in your mouth?

I built a fairly simple contrivance to avoid having to pay $40 for a
cheap Chinese clone of the real pressure tester. For a pressure pump,
I used a plastic baking syringe:
https://www.google.com/search?q=plastic+baking+syringe&tbm=isch
The rubber seal was the first to fall apart followed by the crumbling
of the clear plastic. I used vinyl hose instead of Trygon fuel line,
which seems to be softening from ethynol exposure. Maybe I should
just give up and spend the $40.

(Note to self: Universal air pump design should have a Tygon hose
option).




--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558