Grey13 said:Battery comment - comparison.
BMW i3 Curb 1,200kg (2,645 lb) 22kWh (18.8kWh usable), LMO/NMC, large 60A prismatic cells, battery weighs 204kg (450 lb) driving range of 130–160km (80–100 miles) ~4h at 230VAC, 30A; 50kW Supercharger; 80% in 30 min
So if a modern 22kWh weighs 204 Kg, one can assume an 80 kWh will weigh roughly 4 times that ----806 Kg ???
Second comment: Not long ago the motor industry was telling us - Buy Diesel. Now Diesel is out, next story will be, buy electric. I cannot help but wonder is all this is about big business forcing us to spend more and more money to line their pockets. Just saying!
Raywood said:My question if the towcar is far lighter than the caravan, is what happens if it is caught by crosswinds. Currently a conventional combination at those weights would be regarded as dangerous, so if this gets caught is it relying on the tow car to rescue it, as to me it probably could not.
I am also not sure how you would know if the power produced by the caravan would keep you within the towing limits as it might not be easy to work out what weight you are towing.
If stopped by the authorities how could you show you were towing within the cars limit?y
How do the seaside road trains get away with it? For years they have used a tractor dressed up as a railway engine towing six to eight trailers.ProfJohnL said:Raywood said:My question if the towcar is far lighter than the caravan, is what happens if it is caught by crosswinds. Currently a conventional combination at those weights would be regarded as dangerous, so if this gets caught is it relying on the tow car to rescue it, as to me it probably could not.
I am also not sure how you would know if the power produced by the caravan would keep you within the towing limits as it might not be easy to work out what weight you are towing.
If stopped by the authorities how could you show you were towing within the cars limit?y
Presently there is no UK legislation that would a trailer to provide or assist with motive power on the public roads. Special legislation had to be introduces to allow the infamous bendy busses to be used as technically the rear section was a trailer, and trailer are not allowed to carry passengers. I don't know if bendy busses had drive to teh trailer wheels, but I suspect not. It may be different in other parts of Europe and the world.
Dustydog said:How do the seaside road trains get away with it? For years they have used a tractor dressed up as a railway engine towing six to eight trailers.
Was the bendy bus trailer powered?
ProfJohnL said:Dustydog said:How do the seaside road trains get away with it? For years they have used a tractor dressed up as a railway engine towing six to eight trailers.
Was the bendy bus trailer powered?
Hello Dusty
I think I may have seen such multiple trailer devices, but the ones I have seen were not on the public roads, they ran along the esplanade or beach. so may have not have been required to meet road vehicle construction and use regs. It may also be their top speed was limited. It may be something to do with teh regs that cover show mens vehicles which do allow multiple trailers.
I'm grateful to OC for posting the Wiki link. Clearly some of the bendy busses did have motive power in the trailer section, and in some cases it was the only power, and it pushed the front section. But I do recall there was quite a big thing about them when they were first tried in the UK about them needing to have special provisions to run on our roads.
an inkling of what your describing, The seaside amusement multiple trailer train might have special dispensation I