TwistedMinis
+1y
I believe Max would say something along these lines, however it would sound way cooler.
Putting the single pivot on the frame keeps your roll center in the same place throughout the suspension travel. This will make the suspension more predictable throughout the travel. However, you should probably only do it this way if you are running a 2-piece drive shaft. The reason being because the drive line is lower on a 2-piece setup, meaning your single pivot can be lower on the frame in comparison to a single piece drive shaft. This means you are not making compromises in suspension geometry just to make something work.
For the single pivot being on the axle center, thats where your roll center will be, and it will move with the suspension. Not as consistent, but its absolutely drivable. I would also make the tabs to hold the pivot as short as possible, because the pivot will be much higher than it normally would if mounted to the axle. So that also needs to be taken into consideration when setting up your link geometry as well.
And as always, make the mount for the single pivot as strong as possible.