Quote:
Originally Posted by ausias
Here in Europe a bigger van than Ford E-150 like Ford Transit Jumbo, Iveco daily H2 3950, MB Sprinter, Renault Traffic, Fiat Ducato ... are getting 27-21 mpg on diesel. And I'm trying to reduce aero drag, lol
Because my van have a cd=0.365 iveco daily and cd = 0.355 Volkswagen LT
If i want 30 mpg i just turn on cruise control at 50 mph, 400 Nm of Torque and 177 bhp.
I will try with belly pans from engine to rear on my 24 feet vans.
I know better is a tail 6 feet width and 8 feed tall of flat rear its a big vacuum generator, but i think is very difficult because i need to open doors (270º) loading/downloading goods.
Thanks for your post and lots of time.
|
Thank you ausias. So let me see if I understand this right. You're getting 30 mpg gallon out of 24 foot van at 50mph, from a vehicle with 177 bhp? So that would make it about 3.0L, is that right? If you don't mind me asking, what are the dimensions of your box and how much does your rig weigh when you're doing this?
If my guesses about your vehicle are correct, I can only imagine what kind of gains you would get with a boat tail. If reducing the rear drag on my 7.3L boat anchor gives me 25 - 30% + improvement, so far, I can only imagine what your motor of half or less displacement would see. I realize you have to open your back doors. Could you make the tail in two halves that would swing away to allow access to the box doors?