There is a nice thumb indentation just in front of the gauge so that you have something to hold onto for stability while pumping. The air release or bleed button functions nicely, and you can punch it hard for dumping big chunks of air, or use a delicate tap to drop micro amounts, and it’s surprising how easy it is to perform any adjustment required.
A short tap and hold of the On button gets the digital gauge booted up, and it will auto set to whatever was the last scale that was being used. Hitting the button again cycles through the pressure scales: PSI, BAR, kPa and KG/CM². When reading pressures in psi, the readout is in increments of 0.5 from 0-199.5 psi, and then it increments to 1 from 200 to 300 psi. The other scales stay at the same increments for their entire range. I am not sure you’ll need the other scales (maybe the bar), as they seem superfluous, and I certainly have never used any of the others? The readout stays on for around 1 minute without any usage, and will then auto shutoff, and I found that more than enough time to check the readout, and sit on the bike to check sag, etc.
- 0-300 PSI (Increments of 0.5 for 0-199.5 psi, Increments of 1 for 200 to 300 psi)
- 0-20.70 BAR (Increments of 0.05 Bar)
- 0-21.10 kg/cm2 (Increments of 0.05 kg/cm2)
- 0-2065 kPa (increments of 5 kPa)
The pump is not a lab rated unit, so the accuracy is sort of ambiguous, but it’s in the ball park, meaning its close enough for comfort. What the pump has is rock solid stability (no drift) over time and usage. Once you have become accustomed to the pump, and what its particular readings are in relation to your bikes, just use those as a standard of accuracy. Most any pump on the market has accuracy issues, but what counts instead is the repetition of what value x means, and that every time you use the pump again, the value of x is still the same pressure (accurate or not). This pump nails that repetition on its head. A truly accurate pump isn’t portable or practical for normal usage, since it requires a larger battery, gauge, internals, and costs substantially more. What really matters in the long run is that required sag gets set and/or that the suspension feels proper.
Side note => Like most any pump, there is always a small of amount of air that lingers in the hose, so that when you disconnect the pump, that air is lost in the total relationship to the shocks pressure and the gauges last reading. The gauge measures a total pressure value of x, which is a combination of the shocks value of y along with the hose value of z. I found the value of the lingering air in the hose to be between 2-4psi (or more) on this pump, which depends greatly on how you disconnect the Schrader connector. Again, the lost psi during disconnect is meaningless if you are always using the same method for checking the pressure: connect, pump or bleed to your designated psi, disconnect, check sag if needed, repeat. Once you have defined that 95psi is the sweet spot for your pump, your done.
I really liked the digital gauge, since it was a no brainer to know exactly what the numbers stated, as there was no guessing trying to interpolate between the markings on the gauge and the needle. As my eye sight has gotten poorer with age the analog gauge designs are tougher to use and read. The 0.5 increments for psi allowed very precise settings, making it easy to bleed or add air to meet requirements. You get instant reinforcement of what the pressure is with this design and format. Easier readability, plain and simple, and the large size of the LCD numbers was a bonus.
- Weight – 217 grams
- Length – 240mm
- Stroke length – 120mm
At 217 grams it weighs slightly more than some other pumps on the market, and at $70 it costs nearly twice as much, but it is more durable (so far) and the design and features are certainly very user friendly. Most of the analog competition retails from $35-$50, and weighs between 180-220 grams. The battery for the digital gauge is not serviceable or rechargeable, but FOX implies that the battery will outlast the shock?