Got an email with a link to this thread, guess I should reply
Originally Posted by hustler
It's not about getting in and out, it's about breaking my head open if someone hits me in traffic.
The Blackbird Fabworx street cage is basically the most hard core piece on the menu for streetable cars that I'm building.
It is not meant to be a full race cage but it is built so it could easily be upgraded in the future into one in case you wanted to -
For race legality purposes, all you'll need to add are the two bars that go between the front and main hoops above the windows.
I'd also recommend adding a cross bar inside the dash (optional per NASA CCR), in a car that has full interior, HVAC and audio system it's not something that I normally do.
For a street-track car, this is as good as roll over protection gets short of having a helmet, HANS, full containment seat etc...
It is a 12 point design that is well braced and gusseted, it clears the hardtop by about 1/8" everywhere so the fitment to the car is nice and tight giving the driver the maximum space possible.
The version that you see is a HT only fitment BTW, though making one that is soft top friendly is completely possible.
RE: Smacking your head -
One of oldest arguments in the miata world is around smacking your pumpkin on a roll bar.
If you feel that you're okay with a normal 4 point roll bar being next to you, you'll feel just fine with the BFW street cage - the hoops are as high and as far from the driver as they can be and the dog bone brace is a good 8.5-9" away from the driver's head.
Compare that with the OEM soft top bracing that resides right next to your head.
Here's a shot of Scott's car (same one in the OP) from MRLS, shows the distance pretty well -
You can also see that the dog bone isn't flat, the braces follow the contour of the HT to give you the maximum space.
RE: door bars -
I find that any type of door bar makes the car a little harder to get into or out of, more so if you have a racing seat, and even more if you don't have a quick release steering wheel.
So if you're looking for the OEM ease might as well scrap any kind of door bar and keep the OEM seats.
However, Shaikh from Fat Cat Motorsports has one of my Street cages in his car and made this video -
Fat Cat Motorsport's "Senna" with Blackbird Fabworx Street Cage - Ingress/Egress - YouTube
This is with OEM seats and steering wheel.
A racing seat wouldn't have made this any harder because the leg bolsters would be about the same height as the door bar, a QR will make it even easier.
Before the first guy jumps on the pink cage having different door bars, yes, the design is different but the dimensions are rather similar.
Here's a link to the M.net thread with Shaikh's review of his street cage and a link to a nice gallery showing it from every angle -
FCM's 95M, "Senna", with the first Blackbird Fabworx 12-pt street cage - MX-5 Miata Forum