I do use a set of "Rules" actually I go off the Score off road racing handbook to pass tech inspections to be able to desert race on all my cars.
Score is one of the largest organizations and has a rule book just for racing with all the rules for tubing type, size, thickness per weight of your buggy, bracing, triangulation and gussets you would need to pass tech for racing.
That is one of the main reasons my cars are built from 1.5 inch tubing instead of 1.25.
1.5 is stronger so you could run a thinner tubing and be lighter then the smaller OD of the 1.25 as it would have to be twice as thick to be just as strong.
So that is one of my biggest differences on my smaller cars.
Next would be the full size bulkheads, heims, rear .250 thick wall pivot tube and full automotive size parts I build my cars out of.
These are not small motorcycle made cars, these are real cars made smaller through testing and design to use a motorcycle engine.
Kinda different as most people use motorcycle or quad parts and build a bigger car.. I went the other way around.
Anyways, then depending on what your going to be doing with it.
Racing... I meet all rules.
Play.. I do all the correct size bars and bracing called out for in the Score rule book but I can go thinner on the thickness of materials as your not abusing it as hard or as long as a desert race. Plus the chances of you taking a hit or side impact from a 4,000 pound trophy truck is much less likely.. you just need to protect yourself from rollovers and maybe a rock or tree???
But yes I bring all my racing experience, rule set and building of buggies over the past 12 years with me into the design and development of these Mini Lites.
I weld everything with Mig at this size and level of racing, Mig welding has prooven to work out very well.
As I said for materials I use different combinations depending on what your car is going to be used for. I would recommend certain materials for certain things I.E. racing then lots of chromoly especially on all your suspension parts etc.
But do to price, customer demands etc. I will use either steel or chromoly.
I will just build accordingly.. plus my cars are a little over built actually for safety and for the best interest of everyone.
No worries about the questions.. I know my post is long but most all the questions I could answer I have put into my build log... but again no worries please ask and I will be more then happy to try to answer all of them.
Also your more then welcome to email me too.
Thanks for the questions.