You can drive fast and tell your pit crew what the cars doing. It doesnt qualify you as an engineer. It just doesnt. You may have an idea for a car you would like to build. Or a car you want to improve. But building or altering a racing car takes more time and money than one would know. If you knew the journey before you started you wouldnt take it. Only a handful make it to the end.
I have a company that builds recreations of historic racing cars. 330P4, 917, RSR Turbo etc. We make safe, fast cars. I could not have achieved this without ADR engineering. They have the enthusiasm and skills and equipment to take a simple 2D drawing and turn it into something physical. They have the experience of developing their own cars to be able to tell you what will and what wont work. They have the patience to do it properly. And the contacts to supply your cars needs.
A brompton fold up bike has over 2000 individual components (The MD told me, you can ask him). Who knows how many parts a racing car has. If you allow a margin of tollerance to creep in and mutiply that by the ammount of components then youre looking at failure. It may even be dangerous. You drive. Let ADR do the engineering. I have and I will again.
I am delighted with the cooling modification on my GT40 recreation, ADR spotted & solved the problem cost effectively & to a high standard of work. I would reccomend ADR again for any motorsport work that I come across & will use them for any future improvements to the car.