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 > Weighing at Cat Scales

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dryfly

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Posted: 09/10/20 07:41pm Link  |  Quote  |  Print  |  Notify Moderator

After watching a couple of youTube videos, apparently the only way to determine the exact pin weight of a 5th wheel trailer is to weigh the truck/trailer and then disconnect the trailer and weigh the truck by itself. The unloaded rear axle weight of the truck compared to the loaded rear axle weight should provide the trailer actual pin weight.

Having never weighed at a Cat Scale, is the procedure to go inside and explain what is needed before driving on the scale platforms? I assume there will be two charges.

dapperdan

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Posted: 09/10/20 08:17pm Link  |  Quote  |  Print  |  Notify Moderator

When I weighed my rig, Loves was "nice" and only changed me for 1 weigh-in even though I weighed once WITH the trailer and once without.

It's fool proof and accurate. Good luck!

Dan





fj12ryder

Platte City, MO

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Posted: 09/10/20 08:33pm Link  |  Quote  |  Print  |  Notify Moderator

At the Cat scales here in town, the first weigh is like $8 and the second weigh, done within a short period of time, is $2. Or it was the last time I looked.


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azdryheat

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Posted: 09/10/20 08:43pm Link  |  Quote  |  Print  |  Notify Moderator

Go inside, tell the clerk it's your first time and you'll be taken care of.


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Walaby

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Posted: 09/10/20 08:58pm Link  |  Quote  |  Print  |  Notify Moderator

Download the app and you don't even have to go inside. App will properly charge the reduced cost for the re-weigh.

Mike


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Old-Biscuit

Verde Valley

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Posted: 09/10/20 11:43pm Link  |  Quote  |  Print  |  Notify Moderator

Pull pm to scales with truck and trailer
Truck front axle on forward platform
Truck rear axle on middle platform
Trailer axles on rearward platform

Push call button....tell them 'Private' when they ask for ID number

Clerk will trip scales....
Then drive off scales and go park trailer in parking lot.

Drive truck onto the forward and middle platforms
Push button----'Private' Reweigh

Go park truck, go inside, pay and get your weigh tickets
1st ticket
truck steer, drive axle and trailer axles plus total
2nd ticket
truck steer, drive axle and total

Difference between truck Front and rear axles with trailer and without trailer is trailer pin weight
It's not just rear axle...check for any differences in front axle weights
Depending on hitch placement in truck bed front axle weight could be same, could be less, could be more

My hitch is set 2" forward of rear axle center line and this transfers 150# to front axle when 5vr is hitched plus the weight added to rear axle
So I add the 2 figures to get my pin weight -- 3080# = 22% pin weight on my 5vr


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JRscooby

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Posted: 09/11/20 04:26am Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

Pull pm to scales with truck and trailer
Truck front axle on forward platform
Truck rear axle on middle platform
Trailer axles on rearward platform

Push call button....tell them 'Private' when they ask for ID number

Clerk will trip scales....
Then drive off scales and go park trailer in parking lot.

Drive truck onto the forward and middle platforms
Push button----'Private' Reweigh

Go park truck, go inside, pay and get your weigh tickets
1st ticket
truck steer, drive axle and trailer axles plus total
2nd ticket
truck steer, drive axle and total

Difference between truck Front and rear axles with trailer and without trailer is trailer pin weight
It's not just rear axle...check for any differences in front axle weights
Depending on hitch placement in truck bed front axle weight could be same, could be less, could be more

My hitch is set 2" forward of rear axle center line and this transfers 150# to front axle when 5vr is hitched plus the weight added to rear axle
So I add the 2 figures to get my pin weight -- 3080# = 22% pin weight on my 5vr


When pull on for 2nd weigh, stop TV same place as first.
Subtract 2nd gross from first, this will give you the weight of the trailer. The first weight slip will give you the weight on trailer axles. Subtract that from the calculated weight of the trailer will tell you how much weight the truck is carrying.
The button is placed for easy reach by the driver of a class 8 truck. For me to reach it I open door, stand up on door sill while leaning on top of door. My weight is still split between same platforms.

* This post was edited 09/11/20 04:32am by JRscooby *

valhalla360

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Posted: 09/11/20 04:59am Link  |  Quote  |  Print  |  Notify Moderator

As long as it's at the same time, you can go drop the trailer in the yard and do a "re-weigh"

First weigh is around $12.00.
Second weigh is $2.50.

If you are doing a bumper pull with a WDH, it's a good idea to do a 3rd weigh (again $2.50) with the tension released from the bars.


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JRscooby

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Posted: 09/11/20 07:03am Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:



If you are doing a bumper pull with a WDH, it's a good idea to do a 3rd weigh (again $2.50) with the tension released from the bars.


I have seen this advice many times but have never understood what useful info is gained

Mike134

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Posted: 09/11/20 07:05am Link  |  Quote  |  Print  |  Notify Moderator

Walaby wrote:

Download the app and you don't even have to go inside. App will properly charge the reduced cost for the re-weigh.

Mike


X2 I've gone inside and used the app. SOOOO much easier/faster with the app.


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