221 system Universial chassis?

[O'Sancheski]

Originally Posted by Ninja_Bait

Teams also design other sliding tensioning methods, like idler sprockets or sliding bearing blocks. (I'd warn against the latter; we tried it and it resulted in insanity for those who had to try and get the wheels straight and properly tension and lined up with each other, including myself. )

I have seen many idler sprockets and am not a huge fan of them. But the sliding bearing blocks are great.