In answer to Scotts query on this thread,
What is it about the GT40 monocoque chassis? Quote:
Originally Posted by 5150  Russ,
Did you build you're frame from a set of plans ?
Is it square or round tubing ?
If its steel, what alloy?
Best,
S |
Only rough sketches that I made from an unfinished kit that I was fortunate enough to have access to for a time. Although my chassis is totally different to that kit, it gave me basic critical dimensions, total width across sills etc.
I knew basically how I wanted to build it and it progressed from there. Wheelbase and track are on record of course. The chassis had to fit inside the body! And provide a structure to feed the loads into properly. I designed my own suspension and chassis broadly along traditional lines.The best part was that I was able to take body molds from the kit so I then had a body to work with. Most of that is outlined earlier in this thread.
The chassis is mild (unalloyed carbon) steel ERW tube, for the most part 1"x1"x .062" and 1"x.5"x .062, this is where .062 alloy sheet will be bonded and rivetted on one side of this frame, otherwise round tube 1" x.062 tigged or nickel-silver bronzed. Critical juctions are also gussetted. The welded in rollcage is also designed as an integral part of the structure and will add immensely to the final integrity. Rollcage tube dictated by MSNZ is 1.5"x.100.
I'm still working on the chassis, most is done now except the rear suspension subframe and pickup points. I'm waiting for my starter motor to arrive, I have a sneaky suspicion that the designed position for the lower suspension pickup points is going to be about where the middle of the armature is required to be. May have to do a slight redesign.
There's not much going to happen on the car today as I'm about to head out to Ruapuna to watch the 3 hour endurance race.
Cheers