EK6B18CITR
New member
i'm not an expert in fluid dynamics and pressure loss, but again i highly doubt the impact of the pressure loss due to bend radius on the hose by deflecting it over the roof.
also if you look closely, the hose touches the ground after the bmw, if it were that important they would install supports to keep the hose of in the air ( maintain height) to prevent the loss of presure due to bending.
if you do a bit of math, you'll realize that the angle from top part of the window to ground vs roof to ground it's only a few degrees.
another solution was would have been to pass the hose outside of the car over the windhield/wiper area that way it woudl have been at the same height as through the window ( you would have a left/right deflection)
or as we can see the height of the hydrant is closer to the ground than it is to go through the window, you would have a smaller angle deflection if you would pass the hose under the car. ( if the car is not lowered).
doesn't look like the windows were smashed but more that they were lowered. as the hose doesn't lay on the door rather in the air ( is it becase of water pressure )?
again the BMW has no right to be parked there, but i believe half of the reason was to prove a point to the douchebag.
If the car was (being very generous) 4ft tall. The pressure loss would be 1.74psi
Hydrants usually supply roughly 50psi.
Nozzle reduction turns that in to 100-150psi depending on settings.
Now if they were feeding it to a pumper truck. Then the truck needs about 30psi to feed the pump, in which case they just did this to be dicks.
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