Renovation and aerodynamic improvement of a BPW closed trailer
published: 27/08/22, 20:11
I have just bought an old used closed BPW trailer (according to the plate it would date from...1980???). It's a German manufacture ... it's obviously sturdy without being too heavy.
The chassis is still perfect despite the years... on the other hand, I don't know if there is damping and if there is, it is weak (it doesn't move too much when shaking it...)... but it looks like torsion arms right? Advice to specialists?
I just weighed it, it weighs about 290 kg empty (There's 20 kg more on the drawbar, not photographed, and the ground was not 100% flat, hence the asymmetry) and the PTAC is 650 kg...which leaves 360 kg of payload, much more than I need (but hey, the kg goes quickly, huh!!)
The 10 mm plywood body would deserve a nice renovation... also to make it more aerodynamic!
The idea is therefore to create an aerodynamic cylindrical surface on the front part and to extend it on the sides...for the first stage of the renovation...
First question : what material to use? It must be light, flexible and resistant to bad weather and wind...
I can easily weld a chassis on the front part to put this new, more aerodynamic fairing.
I thought cold of aluminum sheet...
In 0.5 mm there would currently be around 100€ for the outline of the trailer, but is 0.5 mm enough?
In terms of weight, in 0.5mm it will be around 13 kg, in 1 mm around 26 kg...just for the outline...with the roof it would probably be a good 30 kg...and I have to other things to renovate...(in the idea of this aerodynamic fairing, I keep the side walls)
The kg goes quickly...
There you go, thanks for your advice guys! It's the economic exercise of the moment (I saw a few Barbot trailers during my research: it's beautiful but it's completely overpriced and the chassis are certainly not of the quality of this old BPW.. .)
Edit additions October 2022, 2 months later
A comparative study of trailer aerodynamics was carried out from this page: self-construction-and-do-it-yourself/renovation-and-aerodynamic-improvement-of-a-closed-trailer-bpw-t17276-640.html
And the appearance of the trailer optimized at the end of October 2022:
The chassis is still perfect despite the years... on the other hand, I don't know if there is damping and if there is, it is weak (it doesn't move too much when shaking it...)... but it looks like torsion arms right? Advice to specialists?
I just weighed it, it weighs about 290 kg empty (There's 20 kg more on the drawbar, not photographed, and the ground was not 100% flat, hence the asymmetry) and the PTAC is 650 kg...which leaves 360 kg of payload, much more than I need (but hey, the kg goes quickly, huh!!)
The 10 mm plywood body would deserve a nice renovation... also to make it more aerodynamic!
The idea is therefore to create an aerodynamic cylindrical surface on the front part and to extend it on the sides...for the first stage of the renovation...
First question : what material to use? It must be light, flexible and resistant to bad weather and wind...
I can easily weld a chassis on the front part to put this new, more aerodynamic fairing.
I thought cold of aluminum sheet...
In 0.5 mm there would currently be around 100€ for the outline of the trailer, but is 0.5 mm enough?
In terms of weight, in 0.5mm it will be around 13 kg, in 1 mm around 26 kg...just for the outline...with the roof it would probably be a good 30 kg...and I have to other things to renovate...(in the idea of this aerodynamic fairing, I keep the side walls)
The kg goes quickly...
There you go, thanks for your advice guys! It's the economic exercise of the moment (I saw a few Barbot trailers during my research: it's beautiful but it's completely overpriced and the chassis are certainly not of the quality of this old BPW.. .)
Edit additions October 2022, 2 months later
A comparative study of trailer aerodynamics was carried out from this page: self-construction-and-do-it-yourself/renovation-and-aerodynamic-improvement-of-a-closed-trailer-bpw-t17276-640.html
And the appearance of the trailer optimized at the end of October 2022: