weighbridge (probably a silly question)

Feb 24, 2013
10,658
31,888
Bolsover, Derbyshire
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Hymer S800
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not long enough
I am wanting to check my MH load, both total weight and each axle

Question, when I measure the front and rear on their own does it matter how far on to the weighbridge the vehicle is

My simple mind says the further on you go the more it will weigh, :doh: but was not good at physics at school
 
Feb 16, 2013
11,690
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uttoxeter
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24,713
MH
ambulance conversion
Exp
50 years
I am wanting to check my MH load, both total weight and each axle

Question, when I measure the front and rear on their own does it matter how far on to the weighbridge the vehicle is

My simple mind says the further on you go the more it will weigh, :doh: but was not good at physics at school
Can't see it making any difference , the weighbridge is going to weigh your axel wherever it is on the platform still got your other one on the ground as long as it's level, if it's on a slope getting on , it might make a slight difference but nothing that would make much difference
 

Mousy

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Sep 13, 2013
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David, not sure of the physics either, we just drove on and off and on and stopped etc whilst the bloke in the office shouted at us, worked for us. (Insert thumbs up smiley thing here!)
 

DuxDeluxe

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When I weighed the new van the guy on the weigh bridge said he could not accurately weigh the front and rear axles as they were at the ends of the bridge - response was I only needed an indication so that was OK. it should not make too much of a difference as long as both wheels are well on to the weigh bridge
 

Forestboy

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Jul 31, 2007
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Hi
I used to own several weighbridges and it makes no difference as long as the vehicle is level. Some bridges have a ramp one end and flat ground at the other end always weigh axles on the flat side ,
Hope this helps
 

DuxDeluxe

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Hi
I used to own several weighbridges and it makes no difference as long as the vehicle is level. Some bridges have a ramp one end and flat ground at the other end always weigh axles on the flat side ,
Hope this helps
Yep - ramp at both ends which I guess is why he said he could not weight accurately
 
Apr 22, 2013
722
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Cotswolds
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Bailey Approach 625
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Since 2011
In an earlier life I installed a 60 tonne weigh bridge. when the weights and measures guy came to certify it he brought 12 tonnes of calibrated weights. The first test was to put these on each corner in turn. He knew the exact weigh of the weights, he then added small weights until the scales clicked over to the next 10kg.
10kg was the accuracy of the scales, the variation allowed between corners was tiny. As others have said the ground adjacent to the bridge must be level to compare axial weights.
When I had my MoHo weighed locally I had to drive the front wheels on and a reading was taken, then I drove completely onto the scales and a second reading was taken. The print out then included the difference between the two readings as the weight of the read axial.
 
OP
DavidG58
Feb 24, 2013
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Bolsover, Derbyshire
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Hymer S800
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not long enough
Just reviewed my own question and had a flash of inspiration

So sat down....

I now presume that the front axle weight added to the rear axle weight should be the same as the total weight?


Edit

or as just now posted before this, just weigh the front, then the whole, presume the rear

I still fancy having three measurements then seeing if it all adds up right
 

Forestboy

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He knew the exact weigh of the weights, he then added small weights until the scales clicked over to the
10kg was the accuracy of the scales, the variation allowed between corners was tiny. As others have said the ground adjacent to the bridge must be level to compare axial weights.
When I had my MoHo weighed locally I had to drive the front wheels on and a reading was taken, then I drove completely onto the scales and a second reading was taken. The print out then included the difference between the two readings as the weight of the read axial.
That's right 10kg is the accuracy all weighbridges must comply with and it must comply anywhere on the weighbridge especially ends and corners as these points get the most wear and tear. Personally I always weigh both axles as well as the whole vehicle just belt and braces really.
 

funflair

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Dec 11, 2013
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Hi David

If there is any ramp on or off the weigh bridge you could do front rear and total and you could work out what affect the ramp had in any, you could then be our resident expert on weigh bridge measurements(y).

Post and let us know when you have been.

Martin
 
Sep 23, 2013
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My technique is to drive on & stop just before the rear wheels come on. So you get front axle only, but fairly well onto the pad.
Then whole vehicle.
Finally drive so the the front axle is just off the pad, leaving the rear as far on as it can be.

On a well set up weighbridge, it really shouldn't matter how far the wheels are from the ends, but no harm in centring as much as possible.

On the weighbridge I use, it's a contribution to the Friday night fish & chip fund, rather than a formal fee. No printout, just read off the display. So nothing extra for the 3 separate weighs. It's not a public weighbridge & I know it gets a lot of hammer, so I'm not surprised when the two individual weights don't add exactly to the total (slightly over), but it's close enough for my purposes.

With 120kg of electric wheelchair to carry we are tight on payload. The van has a big water tank for a PVC, so I can't fill it up & carry wife & wheelchair. Fine when on my own though. :wink:
 

DBK

Jan 9, 2013
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I would suggest weigh the complete vehicle then drive forward so the front wheels are not on the weighbridge and then weigh again. Providing the vehicle is level you can subtract one from 'tother and you will have the front axle weight as well.
 
Feb 10, 2013
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Is there a fee for using a public weighbridge?
AND
Do you just turn up at one? Or make an appointment.
 
OP
DavidG58
Feb 24, 2013
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Bolsover, Derbyshire
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Is there a fee for using a public weighbridge?
AND
Do you just turn up at one? Or make an appointment.
I am lucky, one of my customers just down the road has a weighbridge, going to use that

But a few years ago I had a problem with a caravan and the dealer wanted nose weights, paid about £3 a measure at a public weighbridge, with printouts

I think dear old Google will give you your local 'public weigh bridges'

(y)
 

pappajohn

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Aug 26, 2007
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Is there a fee for using a public weighbridge?
AND
Do you just turn up at one? Or make an appointment.
Depends on the operator/owner.

If you just want verbal weights i doubt they would charge...but dont bank on it.
Documented weights will incur a charge for the printed ticket.

Just turn up and wait your turn if its busy.
 

Ed Excel

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I found a builders merchant with a weighbridge. They weigh the vehicles that collect materials. I usually get my gas from them so they let me run the van over their bridge for nowt.
 

Mousy

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We stumbled onto one in the Cotswolds whilst away, we were fully loaded, we were charged £10 but it was worth every penny because it showed we had 220 kilos spare...more cream cakes for us!
 
OP
DavidG58
Feb 24, 2013
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We stumbled onto one in the Cotswolds whilst away, we were fully loaded, we were charged £10 but it was worth every penny because it showed we had 220 kilos spare...more cream cakes for us!

Nice one Dawn, I presume you had drunk all your gin ;)
 

Chris

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May 5, 2010
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What happens if you are overweight?

Does the weighbridge man stop you driving off or is it your risk?
 
OP
DavidG58
Feb 24, 2013
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Bolsover, Derbyshire
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Hymer S800
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not long enough
What happens if you are overweight?

Does the weighbridge man stop you driving off or is it your risk?

We are using a local company as a favour rather than anything too official, so hopefully we will be OK, but I guess if you go anywhere too official and get a printout it could be different

Must still be down to the driver to decide though I would have thought, but I suppose they could call the police
 

Forestboy

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Jul 31, 2007
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What happens if you are overweight?

Does the weighbridge man stop you driving off or is it your risk?
They won't phone the police but will inform you that you shouldn't drive also your ticket will be on file for inspection. When I go and check weigh I don't bother with a ticket don't pay either used to own the weighbridge.:)
 
Apr 22, 2013
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Bailey Approach 625
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Since 2011
They won't phone the police but will inform you that you shouldn't drive also your ticket will be on file for inspection. When I go and check weigh I don't bother with a ticket don't pay either used to own the weighbridge.:)
Please satisfy my curiosity, how do the weigh bridge operator know what a vehicle weight limits are?
 

Forestboy

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Jul 31, 2007
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Please satisfy my curiosity, how do the weigh bridge operator know what a vehicle weight limits are?
They don't but on a busy weighbridge like the ones I owned they could easily weigh a hundred vehicles a day any decent operator quickly knows the gross weight of most vehicles and if they think you're over weight will inform you. The final decision to drive or not is yours, I'm surprised the law hasn't changed where if you leave they are duty bound to ring the authorities, it may have as I've been out of it for a few years but I'm not aware of it. We used to get police and vosa bringing vehicles in to check weigh all the time and those that were overweight were not allowed back out until corrected.
 
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