"This is my first Technic build (well since the late 70's when they first came out anyways). It was great fun - I spent the week between C-mas and New Years building the Chiron. It was definitely more fun than I anticipated and the level of detailing is really nice. The engineering that went into the transmission, suspension, drivetrain, engine, etc is quite impressive.
The hood design is a little disappointing while the rear end is really nice!
Overall I found the instructions to be pretty good. Unfortunately I did make a mistake and had to do a partial tear-down which was a pain (see below). I believe in step 187, part 2, I reversed the small pin and this was impinging on the gears outside the motor. Somehow I missed this and had to go back from the end of Book 1 where the "marriage" process occurs.
- No missing pieces. I had the usual extra small pieces at the end too. - The transmission uses rubber bands to hold the gear selector. Inevitably these will dry out and break. It would be nice if Lego could figure out how to use springs instead. - If you need to tear down and re-build the model some of the pieces are brutally hard to remove. A great example would be the long gray pin pieces that slide into a blind hole (e.g. you cant push them out from the other end and the head of the pin is flush w/ the beam so you cant really grab onto it). See step 467 for example. I had to remove all the structure around the pin(s) and then twist all the parts until I could a grasp on the pin. Ideally Lego would add a slide on sleeve at the end of the pins so that there is some exposed length to grab onto. With this in mind moving forward I will probably never push blind pins in all the way until I'm 100% sure the build is correct!
All in all an amazing build that I would recommend to anyone."