Quote:
Originally Posted by christofoo
Extended the Kammback (rear windshield cover) to the rear bumper, also I added a baffle to stop flow from the side, (also I found a less bumpy road).
So this configuration is: - Full Kammback
- Rear wheel skirt
- Baffles between the car and the box, both horizontal and vertical.
- Aero Hitch Box
- EDIT: also I put the passenger side mirror back on, since I'm blocking 90% of the rear-view with the cardboard
Results:
I think that looks a lot better. The full Kammback always seemed like the solution that just had to work.
Video, cruising speed ranges a little from 30-40 MPH:
Well, I mean it still isn't perfect. I still need to find a form that fixes the turbulence on the side of the Aero Hitch Box, if possible.
But I think my next task is Kammback fab. (And duct tape gum removal... any pointers?)
EDIT: I forgot to mention; while I was scouting the road for this test this morning, I saw the sweetest full aero shell on a recumbent bike (velomobile). I wish I'd had time to snap a picture, but it was headed the other way. I think it was going at least 30 MPH on a very slight uphill. I wished I could have stopped the guy and asked if he made it himself, and if it was for a competition or not. I was so jealous. |
The flow looks great! You're 'THERE'!
You could actually use the cardboard and tape, along with some protection for the car and actually fiberglass over the cardboard to create a composite Kammback.I've done this.
After the glassing,a good soaking in a childs wading pool will turn the cardboard to mush,washing away to leave the shell.
If need be,you can add a bit of stiffening to the inside.
A Plex or Lexan rear windshield would also improve the airflow.And it would also provide stiffening.
It's good that you restored the passenger side mirror,as you can now appreciate the new blind-spot.
This project has an enormous utility coefficient.
