[WIP] Super Fast Speedcar - current top speed: 32.4km/h

I have decided to make a WIP topic for my tests of my speedcar, which is a car that I hope to get up to 40km/h or more. But I don't want this to turn into a discussion about wheels, I just want it to be a place to show my progress. This is where I will be doing most of my tests: - it's about 80m of very smooth car park + 15m of footpath and 10m of gravel. Here is my first car: 5:3 gearing, 725gm Here is the results of the tests: Yes, I know - only 24.3km/h, but it's more than I would have ever expected a few months ago (when I thought that the top speed for Lego was 27km/h). I have some work to do...

After my last car I had a goal to lose weight - and I succeeded! - in fact, I managed to lose a whopping 110gm! I also used the idea @Marxpek suggested - putting the front wheels through half beams to reduce friction. So here it is: - 2:1 gearing, 670gm Here is the results of the tests: And yes, I have increased my top speed to 28.4km/h! But I don't think I got the full speed from this car - because it was so unstable, it kept flipping over halfway down the track - every time I tried it! If I can get all the way down the track, I think I could get above 30km/h! - but I will have to redesign it first...