Axel weights Hiab

Hi folks, I’ve been asked to be a TM for a small Operator with 2 rigids Hiabs, one is 18 T the other is 25 T with a mid-lift axel on contract lease…

How do I calculate the axel weights Re overloading? Do I ask the the truck contract provider or add the weight of the front crane and subtract from the plated front axel weight. Eg if the payload is 9T then front axel minus crane weight (2 T approx) which leaves a front axel allowance of roughly 2.5 T.

Does this sound correct?

Thanks in advance and apologies as I want to get this right…

Actually measure the individual axle weights of the unladen vehicles.
That will provide a rough guide regarding payload capacity of each axle.
Which then leaves the issue of actual real world load weight distribution wrecking the calculations.
Obviously a front mounted Hiab magnifies the flaws in the 6 wheeler and 4 wheeler design regarding steer axle weights.
Certainly to the point where don’t get the choice between ordering a 6 wheeler v an 8 wheeler it seems like a no brainer to me.

So close…

Carryfast:
Actually measure the individual axle weights of the unladen vehicles.
That will provide a rough guide regarding payload capacity of each axle.
.

If only he’d stopped there he would have come up with a sensible answer.

stu675:
So close…

Carryfast:
Actually measure the individual axle weights of the unladen vehicles.
That will provide a rough guide regarding payload capacity of each axle.
.

If only he’d stopped there he would have come up with a sensible answer.

So exactly what’s the advantage of using a 6 wheeler v twin steer 8 wheeler, or 4 wheeler v Chinese 6, assuming a front mounted Hiab ?.
While actual real world load weight distribution could potentially vary from massive overloading of the steer axle including the crane weight, to lifting most, or even all, of the extra weight of the crane from the steer and dumping it on the rear axle/s instead.
Now awaits the air suspension will fix all that.

Carryfast:

stu675:
So close…

Carryfast:
Actually measure the individual axle weights of the unladen vehicles.
That will provide a rough guide regarding payload capacity of each axle.
.

If only he’d stopped there he would have come up with a sensible answer.

So exactly what’s the advantage of using a 6 wheeler v twin steer 8 wheeler, or 4 wheeler v Chinese 6, assuming a front mounted Hiab ?.
While actual real world load weight distribution could potentially vary from massive overloading of the steer axle including the crane weight, to lifting most, or even all, of the extra weight of the crane from the steer and dumping it on the rear axle/s instead.
Now awaits the air suspension will fix all that.

Horses for courses, so many variables. It’s quite obvious you are totally clueless.

Star down under.:

Carryfast:

stu675:
So close…

Carryfast:
Actually measure the individual axle weights of the unladen vehicles.
That will provide a rough guide regarding payload capacity of each axle.
.

If only he’d stopped there he would have come up with a sensible answer.

So exactly what’s the advantage of using a 6 wheeler v twin steer 8 wheeler, or 4 wheeler v Chinese 6, assuming a front mounted Hiab ?.
While actual real world load weight distribution could potentially vary from massive overloading of the steer axle including the crane weight, to lifting most, or even all, of the extra weight of the crane from the steer and dumping it on the rear axle/s instead.
Now awaits the air suspension will fix all that.

Horses for courses, so many variables. It’s quite obvious you are totally clueless.

Great so you should obviously be able to provide just one reason out of all of those supposed ‘variables’, regarding the advantages of using single steer with a front mounted crane.
Clueless at least I’m not taking responsibility, regarding the use of kit, that’s compromised, in terms of axle weight distribution from the start before it’s even got a load put on it.
I’ve also described how to deduce a payload estimate net of the crane weight and just about all of the resulting potential pitfalls.
Which part of that upset you ?.

Carryfast, you’re trying to solve a problem that only exists in your weird headspace.
It’s really quite simple for normal people, axle weights and load distribution need to be considered, with or without a SLC fitted.

Star down under.:
Carryfast, you’re trying to solve a problem that only exists in your weird headspace.
It’s really quite simple for normal people, axle weights and load distribution need to be considered, with or without a SLC fitted.

That’s exactly what I said.After answering the original question asked by the OP and just stating that combining a front mounted crane with single steer just needlessly adds to what you describe as ‘consideration’ possibly to the point of having to turn away work for lack of front axle weight capacity.
You call it consideration I call it a needless problem caused by that common wierd spec.

Carryfast:

Star down under.:
Carryfast, you’re trying to solve a problem that only exists in your weird headspace.
It’s really quite simple for normal people, axle weights and load distribution need to be considered, with or without a SLC fitted.

That’s exactly what I said.After answering the original question asked by the OP and just stating that combining a front mounted crane with single steer just needlessly adds to what you describe as ‘consideration’ possibly to the point of having to turn away work for lack of front axle weight capacity.
You call it consideration I call it a needless problem caused by that common wierd spec.

You’ve got no idea, there is no problem.

Pizzalady44:
Hi folks, I’ve been asked to be a TM for a small Operator with 2 rigids Hiabs, one is 18 T the other is 25 T with a mid-lift axel on contract lease…

How do I calculate the axel weights Re overloading? Do I ask the the truck contract provider or add the weight of the front crane and subtract from the plated front axel weight. Eg if the payload is 9T then front axel minus crane weight (2 T approx) which leaves a front axel allowance of roughly 2.5 T.

Does this sound correct?

Thanks in advance and apologies as I want to get this right…

Weigh the lorry axles separately on an axle weigher and use for formula which you have to find online somewhere used properly you can find the centre point of a symmetrical load and the furthest forward and rearward it can go ,you mark these points on the body .

Star down under.:

Carryfast:

Star down under.:
Carryfast, you’re trying to solve a problem that only exists in your weird headspace.
It’s really quite simple for normal people, axle weights and load distribution need to be considered, with or without a SLC fitted.

That’s exactly what I said.After answering the original question asked by the OP and just stating that combining a front mounted crane with single steer just needlessly adds to what you describe as ‘consideration’ possibly to the point of having to turn away work for lack of front axle weight capacity.
You call it consideration I call it a needless problem caused by that common wierd spec.

You’ve got no idea, there is no problem.

There is an around 2t ‘problem’ on the single steer axle assuming the rear axle/s are maxed out and/or no way of distributing the resulting overload to the rear axles off the steer.
I’m still waiting for an answer to the question what’s the advantage of single steer combined with a front mounted crane.
As opposed to twin steer 8 or Chinese 6.

Carryfast, I’m a very patient sort of bloke, quite willing to spend time on cognitive people wanting to aquire my knowledge. In no way, shape or form do you fit that description.
Your very limited knowledge of trucks and transport in general and truck mounted cranes in particular, is clearly demonstrated by yourself.
I’m not prepared to waste time on an uninformed fool who wants to argue, for argument’s sake, trying to make himself appear more knowledgeable than he really is. Do you not see the irony in that situation?
I’ll leave you with a couple of points to ponder, or Google. Cranes come in dozens of capacities and tare weights. There are plenty of options suitable for front fitment to single steer trucks, that weigh half as much as you so wrongly assume all cranes weigh.
Crane trucks are somewhat specialised pieces of equipment, ergo the platform and crane are carefully matched to perform the task for which they are aquired.

Star down under.:
Carryfast, I’m a very patient sort of bloke, quite willing to spend time on cognitive people wanting to aquire my knowledge. In no way, shape or form do you fit that description.
Your very limited knowledge of trucks and transport in general and truck mounted cranes in particular, is clearly demonstrated by yourself.
I’m not prepared to waste time on an uninformed fool who wants to argue, for argument’s sake, trying to make himself appear more knowledgeable than he really is. Do you not see the irony in that situation?
I’ll leave you with a couple of points to ponder, or Google. Cranes come in dozens of capacities and tare weights. There are plenty of options suitable for front fitment to single steer trucks, that weigh half as much as you so wrongly assume all cranes weigh.
Crane trucks are somewhat specialised pieces of equipment, ergo the platform and crane are carefully matched to perform the task for which they are aquired.

I think that part of the problem is that Currywurst doesn’t realise that most trucks with a crane mounted, make a lot more money with the crane, than the loading deck…

Carryfast:
Obviously a front mounted Hiab magnifies the flaws in the 6 wheeler and 4 wheeler design regarding steer axle weights.
Certainly to the point where don’t get the choice between ordering a 6 wheeler v an 8 wheeler it seems like a no brainer to me.

What sort of work is your Hiab doing Carryfast? It’s a rhetorical question……
Amazingly some operators might cart light plant or empty site storage units-if a six wheeler does the job, why would they buy an eight wheeler?
I’m actually with you to a certain degree (if the job in hand varies from day to day)but no one would buy an eight wheeler if a six wheeler does the job they need it to do if that’s the only job it needs to do.
I’m sure the people buying six wheelers know that they need six wheelers….

You’ve gone uncharacteristically quiet Carryfast, suddenly realised that you’ve again made a fool of yourself again?

Star down under.:
You’ve gone uncharacteristically quiet Carryfast, suddenly realised that you’ve again made a fool of yourself again?

Never going to happen, even if you duck for those flying pigs…