I like the corvette parts, they look nice and obviously work, however there are some shortcomings in the design, its heavy, and must use mushy rubber bushings (due to each joint needing a fair amount of misalignment). Aluminum is used extensively, and won't corrode any more than it already has, or could be polished if desired. Toe adjustment and camber adjustments are built in, although camber gain is essentially already set. It does match up with the corvette front end nicely.
Using another car's independent rear end parts are a possibility, however they must be rated to deal with 300+ hp and 300+ ft-lbs. Keeping the same lug pattern as the front means they essentially must be GM parts, or custom parts ($$$). Keeping the same track width (spacers affect geometry!) will be tricky as well..
A live axle setup would work well in a straight line and in the turns due to almost zero camber change, and would likely handle the power and torque just fine, but will be heavy. In particular, the unsprung weight will be high, perhaps causing the rear to lose grip in bumpy corners. It would likely be easier to mount as well, and adjustability could be built in to change the antisquat to suit the driver. Spacers could be used to get the desired width as well, as geometry isn't affected so much in this case. I need to get an accurate weight for a complete disc brake rear to make a judgement here.
A custom suspension could theoretically do exactly what I want, and combine the best things from the other types, BUT: this will add considerably more design time to the project, I'd like to start building before winter hits; will likely drive the project cost up exponentially as custom shafts, hubs, cv joints, etc. are expensive; even with the best intentions, I might just uncover similar or worse problems with my design than the others, only real testing would tell..
What about a windshield?
ReplyDeleteJPB, instead of using a windshield, the Spartan uses twin windscreens to deflect much of the airflow above and around it's occupant(s). Much like riding a motorcycle, some type of protective eyewear would be required, but I would recommend a full helmet or full face mask.
ReplyDeleteA full windshield would be constrictive to the Spartan's open air design, as well as add unnecessary weight. There are also no provisions for windshield wipers. The windscreens will be Lexan, and are not large enough or really even tall enough for a wiper to fit or be effective. In reality, most people will look out over the windscreens as they drive, having an unimpeded view of everything around them, including seeing the engine and front suspension working.