We've had some discussion about pressure gauges, often hard to find again due to odd subject names. I just broke my only gauge compatible with Hobie valve, so have these thoughts.
- The expensive digital gauge (I forget mfr) proved disappointing, because the bayonet tongs were incompatible (some said you could still press it to get a reading). The dim display faces sideways and is hard to read. My tests suggested it was precise without being accurate... reading maybe a half pound high.
- Solstice Universal High Pressure Valve Adapter: I ran across this misnamed thing in amazon... it looks like the pressure gauge of my dreams, as it has 3 gasket sizes to adapt to 3 types of halkey-r valves http://www.nrs.com/repair/hrvalves.asp
. Which one does Hobie use, if any? I dunno but I mention this gauge before testing it since the supply is shrinking. I have several variations of valves and hope to also use these gaskets on pumps for the stupid variations of bayonet lengths. Sadly, the gauge faces sideways, not up.
- Ashcroft gauge: I hated this one that I just broke, but advantage was it has no bayonet (like the Hobie pump) so was multi compatible. Mine read about half a pound low I think, and probably just caused me to break a foot pump. I didn't realize the footpump had a self limiter of pressure where it would resist pumping over the ideal pressure. I forced it and it came apart.
- Gauges integrated into pumps: These tend to give both a low and high reading each stroke... which one do you use? Maybe because I have a constricted valve, the down stroke gives a high reading compared to the bottom-of-stroke which is artificial pump-only since the valve to the inflatable has relaxed closed. But the downstroke may also be artificial because of even open valve resistance, so I guess I should use the average.
- Other gauges: it looks like there is a lot of fragile crap on the market that also screams of miscalibration... It may pay to look for user reviews whatever your choice.
P.S. on electric pumps... it looks like Hobie pressure target 3-5psi is not reachable by the common turbine technology, and you would have to top off with hand pump or piston electric. Someone mentioned an integrated turbine/piston pump that seems overkill. The Hobie manual pump doesn't let you put your back or legs into it like a manual piston or foot pump, but you can switch arms and fill it quite easily.
My Hobie i12s... sailboat in a suitcase! Look for it in THIS