Quote:
Originally Posted by MetroMPG
I think that's what Otto was asking about : why did you aim for 0 degrees? An upward taper is more ideal -- better to make the rear of the pan upswept, if you can. Not too much, or too abruptly. (The extent of the curve/angle depends on how much distance from the beginning of the upward taper to the end of the belly pan.)
EDIT: green line shows a better "box" - upswept and extended further aft to gain more length for tapering.
(PS: It's OK to want to kick people like me for offering suggestions so late in your progress.  ) |
Darin, I was going with the 0 degree angle because of what Sven said on the first page. I'm really confused about that whole thing!
"The diffuser should be flat and level to the ground." - Sven7
I realize every type of vehicle needs certain things to improve efficiency. Knowing what info to use for my application has been difficult. I found MTrenk's thread about the underbody airfoil stuff today. (
The underbody (flat belly pan suboptimal - explanation & solutions offered) ) Very interesting. I'm kind of grasping his points. (I particularly enjoyed the EV RAV4 video!
)
Here's a better example of the location of the belly pan. The green line represents the unchangeable part. At least if I go around the suspension.
From there, I'm not sure what angle to do. ??? 10 degrees??? I have no clue.
I wish I could make the back part out of paper mache. That way it would be moldable into any shape I want. I think fiberglass would be similar. I've never used it before, so it's a bit daunting. I really like what 3-wheeler has done for his belly pan. (
3-Wheeler's belly pan thread )
I really like what you have done to your little Metro! I have a lot of questions on how, and what, but I bet my questions would be answered if I read the info on your mods.
I've been wanting to do that for a while now.
The added piece behind the wheels is interesting. That might help in my situation. I'll have to take off the rear bumpers to see what I can do.
The more I get into this aero stuff, the more a boat tail seems like a possibility. Lol, though I guess if she is going to be a loaner so I can fix friends/family vehicles, then I had better not add a boat tail. I wouldn't want people saying I can't take their vehicle home to fix, because they don't want to barrow the "crazy" looking vehicle!
