Reply With QuoteNot accurate below 6 psi?
??? on longacre gauge
Why does the longacre gauge have a gap where zero should be?
Not accurate below 6 psi?
The needle on my gauge is mid gap. I thought maybe it was adjusting for different atmospheres.
So they can sell you a low pressure gauge?
On the track, I am fearless.
If you were as slow as me, you wouldn't be afraid either.
1994 M Edition
CSP 67
Extra ink raises manufacturing costs?
Its common to see that in all pressure gauges. The internal tube deflection is not accurate enough to get a valid reading below 5 psi (or maybe it is and they just don't want to take the time to calibrate it to that level of accuracy.........) Thats so they can sell you a low pressure gauge.
I have seen in before in speedometers also, no reading until 5 or 10MPH.
+1 A mechanical gauge is typically most accurate in the middle of it's range, less so in the outer 3rds. So a 60 psi gauge is generally used to measure between 20-40 psi.
Last edited by Darron65; 07-06-2009 at 01:23 PM. Reason: the devil made me do it
Called Longacre. They said the gauge is not calibrated to zero, so you have the varying "zero" start points. Rather the gauge is calibrated for the scale. Not having a zero peg for the needle to hit keeps it from being knocked out of calibration.
It was really that important to you, huh?
I really wanted to know. I thought you did too. Well, screw you!
a few years ago at the Solo Nationals, Madarash's car was handling like crap and he was mid pack
couldn't figure out why during first day runs
overnight, he had a brain fart and checked his tire gauge against someone else's
his was 10psi too high
fixed the pressures and was near the top on the second day
ever since, he and I check our identical $60 Longacre gauges against each other's every few events
want to join the club?
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)
I would be curious to compare. Perhaps this weekend.Originally Posted by nealb
sure, what matters isn't the precise number, but the relative number
does your gauge always read about the same more/less than mine
not whether they are the exact same number
if the difference becomes large from one measurement to the next, there is a problem with one of the gauges
make sense?
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)
Sounds good.
you mean the gauge on the air pump at the gas station isn't spot on?
[SIGPIC][/SIGPIC]
Anything is better than my go/no go guage. Air pressure: Checkyou mean the gauge on the air pump at the gas station isn't spot on?
"Racing makes heroin addiction look like a vague longing for something salty" - Peter Egan
........
you forgot to put j/k at the end of that........
[SIGPIC][/SIGPIC]
Who says I was j/k
"Racing makes heroin addiction look like a vague longing for something salty" - Peter Egan
Sure.
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