I believe I recall the RCR Mono tub coming in at just about 300# but it might be made of slightly heavier alloy.
Are you going to build a cage in this car too? That will add some torsional rigidity to the chassis as well. Not sure I would weld the seats in place for that..
You are doing a great job. I thought your current chassis was very well built.
Tig welding is difficult enough,the positions have to be even tougher. I tried to tig weld a couple times which resulted in my receiving a jolt of electricity through my body. Followed by an out burst of expletives and never touching a tig torch since.:shocked::shocked:
So does that mean that the RCR monocoque chassis is a superb piece of fabrication too.....wink.
the torsional/beam ridgidity is superb without a roll cage...Steve told me his math model numbers and they are almost identical to the math and also the real world physical test rig results we found with the RCR chassis...surprise surprise.
Steve,as we have discussed make sure you weld inside and outside of all the panels you can to give full penetration and larger cross sectional strength.
I know you appreciate that we build two monocoque chassis per week