Rear butterfly wings on trailer

Never seen these before but I followed him out of Erith and when he managed to get some speed up the two wings on the side opened up and then there was 2 smaller wings inside at the top which then opened up too and when he slowed down they all folded back in again not sure what it would cost to fit and how many mpg’s it would save.

Prima Frio.
Surprised you saw those wings folded up…

My first thought was DRS system akin to F1 cars to help overtaking. Obviously wouldn’t be active on the first lap or under safety car conditions, but every little helps. (See what I did there BB? :smiley: )

the maoster:
My first thought was DRS system akin to F1 cars to help overtaking. Obviously wouldn’t be active on the first lap or under safety car conditions, but every little helps. (See what I did there BB? :smiley: )

:laughing: :laughing:

Franglais:
Prima Frio.
Surprised you saw those wings folded up…

Well it was rush hour near Dartford so was never going to get much speed up anyway although he did get them open for a few seconds but like I said certainly not seen them before.

Can honestly say I’ve never seen/noticed them before ever :laughing:

What’s the purpose? I’m assuming aerodynamic improvements allegedly? For fuel consumption improvement?

Have them over here (Canada) it’s an aerodynamic aid to increase fuel economy ., all good till they have a fault and driver smashes them. If this is what you saw

Open wings, back on bay close wings around bay, bit similar to the air bags on the bay, ment to keep things cooler when on bay, leaving fridge running to keep it cool.

biggriffin:
Open wings, back on bay close wings around bay, bit similar to the air bags on the bay, ment to keep things cooler when on bay, leaving fridge running to keep it cool.

You don’t back onto bays at 80+ km/h on the Motorway…

youtu.be/4uQQtcRVPNg

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biggriffin:
Open wings, back on bay close wings around bay, bit similar to the air bags on the bay, ment to keep things cooler when on bay, leaving fridge running to keep it cool.

They only opened up when the driver briefly got up to about 35 to 40 mph otherwise I’m assuming they stay shut.

They have them here too, ones I’ve seen driver has to open and close them.

Here you go, I know nothing about it but they’re obviously pushing it from a green angle.

betterflow.com/en/aero-products/

I have an idea. Put the whole truck inside a giant baloon. Inflate and seal. Now all you have to do is figure out a way to make the baloon rooll with the truck inside, that way there is 0 wind resistance on the truck+trailer.

ps. It says CO2 reduction on the flap so it must be true

Strange they go to that expense when the average N. American tractor unit seems less than aerodynamic.

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If its designed to make it go faster, the truck you saw must`ve been on Irish plates :laughing:

peirre:
If its designed to make it go faster, the truck you saw must`ve been on Irish plates :laughing:

Paddy be lucky to keep up with Primafrio and delchov at the helm.

They have just had delivered 300 new FH to replace 300 DAF, all Portugal registered apart from a smattering of Spanish plates that can drop and pick up from rail heads.

Www.primafrio.com

In a previous life called paconsa. How do they get away with it? Loads of Mozambique drivers working for buttons, poor b’strds…

I wonder how you would fare with kit like this deployed if Mr VOSA was having a slow day and decided you were exceeding your length limit for the vehicle?

WhiteTruckMan:
I wonder how you would fare with kit like this deployed if Mr VOSA was having a slow day and decided you were exceeding your length limit for the vehicle?

I’ll bet there is some variations written into C&U regs? . Same as having Eu6 cameras in windscreen.

WhiteTruckMan:
I wonder how you would fare with kit like this deployed if Mr VOSA was having a slow day and decided you were exceeding your length limit for the vehicle?

How would they measure it? By the time they’d stopped you and run a tape measure over it the length would be fine… [emoji848]

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Roymondo:

WhiteTruckMan:
I wonder how you would fare with kit like this deployed if Mr VOSA was having a slow day and decided you were exceeding your length limit for the vehicle?

How would they measure it? By the time they’d stopped you and run a tape measure over it the length would be fine… [emoji848]

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Good question. I dunno. Might be enough to have dashcam footage of it deployed in motion, then pull the vehicle and measure it.