Motion pro. If it’s off send it back they recalibrate it. I’ve never heard of many being off unless someone drops it etc
I'm not sure if my Longacre can be calibrated or not, but it is guaranteed to be accurate to one half of one percent. At 30 psi, the midrange of my 0-60 gauge, that would be .15 psi. I had it tested after I bought it and it lives up to the claimed accuracy.
I care more about consistency than accuracy. As long as you know the difference between your gauge and a baseline, then you can adjust your pressure in increments. As long as you use the same gauge you will get consistent results.
As Deitrich, from the Barney Miller Television show once said......"Hey, no reason you can't have both"!
I paid extra for a Longacre Digital thats calibrate-able. Ive never needed to calibrate it after 5years. They don't even sell the one I have anymore, only the non-calibrate-able one. I bet its because no one ever used that feature.
There are many companies out there that will rebuild/recalibrate/verify any type of gauge used in the manufacturing or engineering business. In fact companies (like Pirelli) that are certified to ISO standards have to these companies come in to check and verify their gauges all the time. So just google engineering testing or something like that and you will probably find one nearby. Hope this helps Jeff
While true, in most cases, that would greatly exceed the cost of most of the gauges people tend to bring to the track.
OK then I haven't researched gauge recalibration pricing in many years so the best thing to do is test against a known gauge. I was lucky to have the R&D depts. certified gauge to use for mine. Or buy a new high quality gauge every two to three years?
Where I work they have a machine that costs well over $50K and is certified yearly for accuracy. The air pressure can be adjusted all the way down to 1/1000th psi . My Longacre was within the 1/2 of one percent in two psi increments up to 60 psi.....that's good enough for a town this size!
at most events the tire vendors usually have a calibrated source to check your guage at. Otherwise you could build a simple device with some hose and water if you have access to a 30+ meter tall building...lol 10m - 14.2 PSI 20m - 28.4 PSI 25m - 35.5 PSI
I appreciate all the recommendations here about Longacre. I’ve been looking for a new gauge. Anyone have experience with Pit Posse gauges? Asking because I happen to have easy access to their products. The digital one looks nice at $50, but I’m unsure of their manufacturing processes (employing the lowest bidder, etc.).
I always thought the Motion Pro was the gauge of choice at the track. For me it is anyway. https://www.revzilla.com/product/mo...Hr-kzsY-XiDXw6xNe4DYLYSxUgETaQRxoCWekQAvD_BwE
I used a motion pro digital in the shop every day for over 3 years, plus track use and every time I referenced it against the track side tire guys it was extremely accurate. I would happily buy another.
if youre on a tight budget...spend $25 on a pair of angled valve stems and $5 on 2 pencil stick gauges. Those tend to be very accurate for the moola.
and one of these to keep it stored properly! https://www.revzilla.com/motorcycle/motion-pro-tire-pressure-gauge-holder
https://www.revzilla.com/product/mo...MIwrXroIDz3AIVjeDICh1TXwYsEAQYASABEgKkrvD_BwE I have my super cool tire guy Stickboy check mine periodically and simply make the adjustments in my head. But, in 1.5 seasons so far...it's off by less than .5lb
