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Getting axles to scale

Discussion in 'Flatbed Trucking Forum' started by W Bench Farms, Aug 16, 2022.

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W923 Road Train Member

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MrEd said: ↑

Dude, you are wrong. But you know that. I'll leave ya to be wrong alone before the mods get annoyed. Have a good, but wrong, day!
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Would you please post some pictures of the extra valves your trailers have because I am not aware of such a system I want to know in case I see this problem on something else. I am not trying to start anything just trying to learn.

W923, Aug 25, 2022

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kylefitzy Road Train Member

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MrEd said: ↑

Yo

On a spread axle, they are weighed as individual axles. So you can be 20k on each. Thats way you can have up to 40k total on a spread. But, since his axles are almost 5500 pounds different, Id say he needs to get it in the shop for. If everything is functioning right on a trailer, those axles should be within a couple hundred pounds of each other. No matter how its loaded. Valves are there to equal the air pressure between the two axles so the weight is distributed evenly.
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No valves are needed to equalize air pressure between axles. To get equal air pressure in a set of bags they just need to be plumbed together. As most trailers are.

kylefitzy, Aug 25, 2022

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God prefers Diesels Road Train Member

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MrEd said: ↑

Valves are there to equal the air pressure between the two axles so the weight is distributed evenly.
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What valves?

God prefers Diesels, Aug 25, 2022

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kranky1 Road Train Member

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MrEd said: ↑

Yo

On a spread axle, they are weighed as individual axles. So you can be 20k on each. Thats way you can have up to 40k total on a spread. But, since his axles are almost 5500 pounds different, Id say he needs to get it in the shop for. If everything is functioning right on a trailer, those axles should be within a couple hundred pounds of each other. No matter how its loaded. Valves are there to equal the air pressure between the two axles so the weight is distributed evenly.
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All the legislation I’ve ever read allows 20k on a single axle with adequate spacing from another axle or axle group. No mention of tandems or axles that equalize.

kranky1, Aug 25, 2022

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jamespmack Road Train Member

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W Bench Farms said: ↑

Pulling a 48' East spread axle with an FLD 120. Weighs 29-30k empty. Put on a load of 44' steel beams today, loaded in the center of the trailer. Tried to roll on the scale easy to check my axle weights. Gross was 73640. Front axle 10120, drives 29080, front trailer axle 14480, back trailer axle 19960. Had 2 - 4x4's stacked on the back under the beams. I will try to post some pictures of the load in the morning. Ran out of daylight tonight.

How can I get more weight on the tractor drives? Only have about 1 1/2' to move forward to the bulkhead with the beams. I have a toolbox on the truck frame so not much room to slide the fifth wheel unless I move things around. Just want to get an idea soni can do a better job of loading. Some of the loaders at these mills are always in a hurry, but don't want to get an overweight ticket.
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Your 5th wheel needs to move forward. Looks like you have a deep kin pin. Hard to tell from your pics. On air liner you will wanna start with trailer king pin at red line centered on front drive air bag.

Then figure if load need to go forward or back. Im gonna say forward. Next I would never count on a truck stop multi platform scales for individual axle weights. You need them on seperate plates. Go to a local co-op and back it on one axle at a time. Subtract first first axle weight from second axle weight. Bet it comes out differently than what you are currently showing.

Over all center measurement is not center for weight distribution.

jamespmack, Aug 26, 2022

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jdchet Medium Load Member

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W Bench Farms said: ↑

Pulling a 48' East spread axle with an FLD 120. Weighs 29-30k empty. Put on a load of 44' steel beams today, loaded in the center of the trailer. Tried to roll on the scale easy to check my axle weights. Gross was 73640. Front axle 10120, drives 29080, front trailer axle 14480, back trailer axle 19960. Had 2 - 4x4's stacked on the back under the beams. I will try to post some pictures of the load in the morning. Ran out of daylight tonight.

How can I get more weight on the tractor drives? Only have about 1 1/2' to move forward to the bulkhead with the beams. I have a toolbox on the truck frame so not much room to slide the fifth wheel unless I move things around. Just want to get an idea soni can do a better job of loading. Some of the loaders at these mills are always in a hurry, but don't want to get an overweight ticket.
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When you weigh do you leave the trailer aired up(red button in) or do you trip out both buttons?

JD

jdchet, Aug 27, 2022

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kemosabi49 Trucker Forum STAFF Staff Member

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jdchet said: ↑

When you weigh do you leave the trailer aired up(red button in) or do you trip out both buttons?

JD
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I would weigh with all brakes released. On a level scale this should be no problem.

kemosabi49, Aug 27, 2022

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jdchet Medium Load Member

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kemosabi49 said: ↑

I would weigh with all brakes released. On a level scale this should be no problem.
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I know that. I was asking the OP.

JD

jdchet, Aug 27, 2022

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jamespmack Road Train Member

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jdchet said: ↑

I know that. I was asking the OP.

JD
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In fairness if the OP listened to everyone in this post, he would go to a shop with unidentified problem and probably need a new trailer.

jamespmack, Aug 27, 2022

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kylefitzy Road Train Member

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jamespmack said: ↑

In fairness if the OP listened to everyone in this post, he would go to a shop with unidentified problem and probably need a new trailer.
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I bet that new trailer would split out the weight right though!

kylefitzy, Aug 27, 2022

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