Updated Dual cardan coupling (RC car transmission) shorter version

This will go times 2 in my RC 4WD design (in progress) but it also drives (partly) of the overall design size. So I decided to streamline a little bit. I was able to design a print in place part (much shorter) but prone to breaking (!) So I came back to my initial, sturdy coupling and just reduced the hefty margins I had taken initially. So same thing a little shorter: 4 cm gained on the car length … 

I've since released the car ! You can get it at:

https://www.printables.com/model/281110-4wd-rc-car-185-parts