Are you building your own splitter tunnels?
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Das Beast: My E30 track / street build
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I like the overall shape so we're going with it
At the proper height. Needs a 2" air dam. Will fab it from lawn edging or something
This is bad. Splitter hitting oil pan
3.7 degree up angle, i.e. lift generator. Definitely don't want that.
Slight surgery to remove the offending piece
Good clearance now
0.28 down angle, same as garage floor
Frame is starting to shape up like this. Not totally sure what the final product will be, but it's getting there
There's room to make the tunnels 6" wider on each side. Would need different mounting points. I'm considering doing it.
Last edited by dvallis; 06-05-2022, 03:55 PM."And then we broke the car. Again." Mark Donohue, "The Unfair Advantage"
1987 E30 3L Turbo Stroker Das Beast
2002 E39 M5
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I started larger so we can cut it down as required. Might end up smaller. I'm still researching.
Professional Awesome distributes Racebred splitters. They look fairly decorative. No tunnels or front supports from what I found. Anyway, I like building things : - )
"And then we broke the car. Again." Mark Donohue, "The Unfair Advantage"
1987 E30 3L Turbo Stroker Das Beast
2002 E39 M5
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These links are pretty good. Suggestions for splitter length follow each:
NASA 4" -6"
Professional Awesome 4" - 8"
GRM 4" - 6"
MOTOIQ ~4"
Introduction to Aero 4" - 8"
G-Stream < 3"
So? As DigitalWave noted I have WAY too much splitter Probably only need ~4" to balance the 500 lb wing.
Will get out the saws-all next time.
"And then we broke the car. Again." Mark Donohue, "The Unfair Advantage"
1987 E30 3L Turbo Stroker Das Beast
2002 E39 M5
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New shape looks good
Tunnels fit
Frame mounts are good & strong
Pro tip. Level the car with driver weight in seat. #facepalm
Contemplating the mounting frame. I have lots of aluminum drop to work with
"And then we broke the car. Again." Mark Donohue, "The Unfair Advantage"
1987 E30 3L Turbo Stroker Das Beast
2002 E39 M5
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More fab. Simpler is better. I eliminated the height adjustment. Just using a straight mount to the splitter.
u-channel for the mounting point
Carriage bolts with washers to spread the load
After lots of bolting it on, measuring, taking it off, repeat. Coming together.
Mounts are really solid. Pivots to adjust the angle
Perfect fit
Now I have to design the rest of the mounting points, so down angle on the splitter doesn't become up angle and start generating lift. This will be harder as there is more crawling around under the car involved.
To be continued ..."And then we broke the car. Again." Mark Donohue, "The Unfair Advantage"
1987 E30 3L Turbo Stroker Das Beast
2002 E39 M5
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Day off today. Created the air dam ... from lawn edging. Will block the lower valence holes with aluminum later
End plates and ramps are next.Last edited by dvallis; 06-20-2022, 02:27 PM."And then we broke the car. Again." Mark Donohue, "The Unfair Advantage"
1987 E30 3L Turbo Stroker Das Beast
2002 E39 M5
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