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20 Sep 2014, 07:27 (Ref:3455402) | #1 | ||
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Budget Corner Weight Scales
Hi,
I recently acquired a set of Budget Race Parts corner weight scales. The readings appear to be reading slightly low and vary slightly between the 4 pads. Does anyone know how to recalibrate them. There's a CAL button on the readout box and also a socket on the rear marked "calibrate" Any help would be appreciated. Robyn |
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11 Oct 2014, 13:53 (Ref:3463340) | #2 | ||
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Join Date: Jun 2007
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The supplier imploded a few years ago.
In the absence of any technical specifications and depending how cheaply they were made (good electronic scales use a proper Load Cell) the components have probably "drifted" (moved away from their original design parameters) over time. Therefore the only way forward would be to load each pad with a known weight and note down the actual as against measured, increase the known weight in say 25 KG amounts and thereafter plot a divergence curve for each pad. Then apply the divergence correction when you actually weigh a vehicle. Same as Magnetic Deviation values when navigating with a Sextant, GMT and a Chart and Compass! Gps makes it a whole lot easier; particularly with three and now at least four fixes. (N.B. It really all depends how the device was designed and made. Many cheaper types use a lever and a spring to take the main weight and only place a very small mass load on the Load Cell. Other still cheaper types use Strain Gauge and/or Piezo devices and even various types of force sensors which usually vary the component resistance under loading. If it a lever and spring, then could well be the spring which has drifted. Same as calibrating a Torque Wrench and even a Rolling Road! Ours used a Yard Stick and a very accurate Spring Balance to adjust the spring loading on the torque cradle.). |
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15 Oct 2014, 19:46 (Ref:3465400) | #3 | ||
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Thanks for the reply.
Your suggestion would work for taking basic weight measurements but it would not be any good when using the various functions on the unit for %,diagonal weight calculations etc. I hoped someone may have owned/used the same kit and knew how to adjust it. |
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15 Oct 2014, 22:59 (Ref:3465464) | #4 | ||
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Just use 4 bathroom scales, seen it done before and cheap from a charity shop.
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Balls of steel (knob of butter) They're Asking For Larkins. ( Proper beer) not you're Eurofizz crap. Hace más calor en España. Me han conocido a hablar un montón cojones! Send any cheques and cash to PO box 1 Lagos Nigeria Africa ! |
16 Oct 2014, 06:52 (Ref:3465511) | #5 | ||
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Bathroom scales are no more accurate. Mine read way over what they should!!
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16 Oct 2014, 22:45 (Ref:3465757) | #6 | ||
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Balls of steel (knob of butter) They're Asking For Larkins. ( Proper beer) not you're Eurofizz crap. Hace más calor en España. Me han conocido a hablar un montón cojones! Send any cheques and cash to PO box 1 Lagos Nigeria Africa ! |
17 Oct 2014, 09:14 (Ref:3465875) | #7 | |||
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Quote:
Such coefficients you work out yourself, from the basic data........ |
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17 Oct 2014, 15:27 (Ref:3465951) | #8 | ||
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31 Jan 2015, 07:39 (Ref:3499378) | #9 | ||
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Join Date: Jun 2007
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Quote:
They're probably not absolutely accurate but I swap them around during measurements and they tend to agree with each other. Good enough for corner weights where the odd kg isn't going to make a massive difference. Good enough for FF1600. Obviously you need 4 identical ones so they're the same height! |
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4 Feb 2015, 20:05 (Ref:3500972) | #10 | ||
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Try Phil.... He may pass your way...
BWE Scales & Cash Registers 33 The Crest Sawbridgeworth Herts CM21 0ER Tel: 01279 725 765 |
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