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There is a gusset there for the push rod to connect to.
Ok fine, I couldn't tell. I didn't see that in your CF pictures so I don't really know what your planning.
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My day job is designing parts for aerospace, crash test dummies and weapon systems that see extreme loads of 150g
I can tell. I guess what I'm trying to say is not that you can't do that math or do good design work, but that you may or may not have real world experience at what you are doing in this case. On top of that I'm saying there is reason to err on the side of cautiousness, because the risks you take also involve other people. Perhaps you are less versed in the math involved in saving one pound of structure vs. a 1 in one million chance of killing another person.
I have no doubt that lightness is an advantage in a race car. How much is that one pound going to buy you at the track? How close are you to the track record for your class? At some point designing for the abstract is not a good goal. If you are stronger and more durable, that's a great thing. More power to you. If something happens that you didn't forsee, that's not so great. When things go bad someone, who probably doesn't get paid a lot, is going to have to go out and gather up your blood and guts and put them in a pail.
It's not that I don't admire the search for the "best", it's just that I think it needs to have very careful criteria. It is almost certain that the driver is the biggest performance factor. A few pounds of suspension simply won't matter if your not running against identical cars. I am not advocating a heavy car. You should be able to get under a 1000 pounds if you work at it.
If you drive this seriously you will likely drive off road over a 100 MPH more then once. i did anyway. Maybe it's different out west but here in the east it's wet enough that there are real ruts, rocks and other things ( I went airborn on a woodchuck once
). Just saying...
My last thought is nothing keeps you from going for the CF at a later date. Why not make the path to actually having a car simple and reliable and then with experience decide where to best put your efforts? That seems like a very real world approach. Since you don't know where the problems lie ahead, pick your battles by taking them on when you can pick and choose them. That is a resilient development strategy.