Originally Posted by ferball
As far as the aluminum cluster goes, I would think that if the spacer was close to the diameter of the sprocket, the layering would help keep things from flexing and bending.
I'm thinking the same thing...for the steel ones I'm just going to space them with ground washers, (standard washers placed on a surface grinder and ground perfectly uiniform and flat).
For the Aluminum cluster, full circle rings could be made that should eliminate flex.
I love experiments...