Re: [ST] Gauge test point (was Re: MotoGP comment and other input)

["Knowles" <gpz900r@xxxxxxxxxxxxx>]

HI all
I think the same calibration thing applies to Torque Wrenches. I've
experienced a number of times where the manufacturers torque seems to be too
high especially on smaller nuts and bolts - I recently stripped a rear
sprocket mounting bolt by using the correct torque and had to replace it. -
I always go 10% below to start with now and then re-torque afterwards to the
correct spec if it seems sensible. Sometimes you still grit your teeth
waiting for the click!!
Paul


----- Original Message ----- 
From: "Dan Wetherington" <DEW@xxxxxxxxxxxxx>
To: <ST@xxxxxxxxxxxxxx>
Sent: Thursday, July 14, 2005 4:32 PM
Subject: [ST] Gauge test point (was Re: MotoGP comment and other input)


> I've been contemplating building a test setup (I work at a "test lab"
> and have access to calibration equipment).  The real problem is dealing
> with the low pressures found in tires.  Most of our stuff is set up for
> hundreds to thousands of PSI.  It wouldn't be too hard to get a 25, 30,
> 35, 40, 45, 50 PSI check out of our equipment...  We'll see.  I think
> you can get calibrated tire gauges too, if you really need them...
>
> If you really wanted, you could buy a new pressure gauge (McMaster Carr
> has these:  1-1/2" Dia. 0-60 psi, accuracy 3% or better, ~$12.  P/N
> 4000K507) and then buy a Schraeder fitting to put on the end.
>
> Enough rambling...
>
> Dan
>
> >>> bil@xxxxxxxxxx 07/14/05 9:29 AM >>>
> On Wed, 13 Jul 2005, Rich Rumble wrote:
>
> -I took advantage of the 30-psi test point at the Dunlop booth in the
> paddock
> -area to test my trusty tire gauge that I bought 20 years ago at the
> Porsche
> -Parade in Costa Mesa.  Alas, the gauge read 34 psi!  All these years,
> it's
> -been lying to me.  My cheap pencil gauge is actually closer to
> correct.
> -Anyhow, the take-away from this is don't trust your gauge.  Test it
> against
> -a calibrated source if at all possible.  A bad gauge can affect tire
> life
> -even if you measure frequently.
>
> Wow, I've been looking for something like this "test point" you
> describe for
> sometime to see what my gauges really read.  None of them ever agree.
> I
> wonder if this booth will be at the AMA races at Mid-Ohio, or if there
> are any
> other places that have such a calibrated test point?
>
> Anyone ever find such?
>
> -- 
>
>                                ._O_.  '03 Sprint ST
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