Truck Weight Wireless Onboard Scale System

Unless convenience is super important to you, you can just mount an air pressure gauge on an airbag at each axle.


As for the steer "virtual" steer sensor -- it just estimates based on your drive weight & calibration setting.

 

Sounds like a wireless version of AirWeigh, which I have so yes I use them. The sensors that AirWeigh uses measures PSI in 1/64 per PSI increments. Because it measures the air pressure in that small of increments they are quite accurate when *PROPERLY calibrated.
You will only need one sensor per group, not individual axles. All 4 air bags are tied together in a tandem application, so there will be no difference between the front and rear axle for example.

No, there is no sensor for a spring that I'm aware of. How it works is during calibration of the drives, it will also ask for the steering weight, you input the empty weight, then the loaded weight. It calculates the percentage of increase from empty to loaded on the steering based on the increase of the drives and gives you a "virtual" weight based off of said calculation.

Special Note:
*PROPERLY calibrated means you must resist the urge to think "Well you know super trucker, if I pad the loaded weight just a little, then I'll always be good."
Avoid this thought process, remember, the sensors measure PSI in 1/64ths...so let's say your loaded weight is at 40,000lbs at 72PSI...72 * 64= 4608 units to the computer, so even a small increase for "padding" throws future calculations way out of whack.
Calibrate it properly, and then pad the weight a little from the display.
Also, good calibration practices are to calibrate on a known accurate scale, use the same scale for both the loaded and empty weights as it removes even small variances, which as I've shown can reduce accuracy.

 

Since you are obviously well versed on this I have a question, I just ordered a new truck single rear axle but with an Air Weigh three way gauge setup, I will be pulling a single axle trailer, so am I correct to assume that with an air ride ft axle I will be able to get actual weights on all three axles, correct?

Thx Stan

 

I went with this for 100.00 and put the sensors in trailer and drive axle airbags. Lets me know before leaving the parking lot if I'm legal or not.
http://www.amazon.com/GlowShift-Bla...439945751&sr=8-2&keywords=air+suspension+dual

I'd love to have the air weigh, but if trailer bags are reading over 94 PSI in my cab.... time for a rework !

 

I've seen some trucks, mainly low beds, that use a pair of load cells bolted to the frame and the 5th wheel pivot pins pin to them. Something like that should give you an accurate reading of your drive weights and if you've got the 5th wheel positioned correctly your steer weights should be legal as well. I'll see if I can find a link.

 

www.Vishaypg.com/onboard-weighing/forestry-logging/9150-meter/

Click on the 5th wheel system link on the lower right part of the page. We've been using that setup for decades in logging on trucks and trailers since you're paid by weight, so you want to be as close to legal as you can.

 

Sorry the link is kind of messed up. You might have to do a little searching on that website to find it.