Anybody have opinions of the roof attachment bar from ZerekFab (out of Anaheim CA)? Not going to meet any race-scrutineering requirements (and to be fair, ZerekFab call that out clearly) - but I'm more interested for overall chassis stiffness, without too much sacrifice of road-driveability (my car is 80% street, 20% track-day/autox).
I hadn't seen a product like this out for the Miata but I was intrigued, since could be a simple way to solve the "two bricks connected with a playing card" problem (to quote Clarkson) that all convertibles suffer. So, I wondered if you guys had experience with it - or if you just have strong rollcage/chassis kung fu, what you think of the concept.
For background, my car already has a lot of chassis stiffening goodies (Paco strong arms, FM V2 butterfly brace, Hard Dog M2 roll bar) and it's an NB2 so the least floppy of the 90-05s from the factory. Thanks!
I'm assuming it attaches to the old mirror mounting points, used for a light on the later cars. I wonder just how stiff a connection point that is, if this can actually make a difference. Seam-welding the seams in the door opening can have an effect on cowl shake with no effect on the interior, given the choice I'd rather do that.
Thanks a lot, Keith - that was my fear as well. I was thinking I would want to at least weld a gusseted spreader plate at the front mounting point to give it more strength and spread the load. But that kind of defeats the purpose of a "bolt-in" solution...
Regarding seam-welding, are you aware of any detailed guides for that process (specifically where/how to weld)? Perhaps you'd like to write one? Miata Performance Projects Part Two?
Thanks again
In reply to joppelaar :
It's already in How To Build a High Performance Miata and has been on the FM website for a while :)
https://help.flyinmiata.com/en_us/lots-of-pain-a-little-gain-BkYvAnA3s
Note that the spot welder is a nice to have, you can also lay down a bead along the top of the seam. Since it's all hidden once reassembled, that's okay.
In reply to Keith Tanner :
Well of course it is, hahah - thank you Keith!
