12 inch Graham Phantom


Anyone compared this to the 9" or 10" arm tube?

Thanks
128x128glai

Showing 1 response by stringreen

I would think that any improvement is minor. I changed my VPI arm from the 9 inch sig to the 10.5, and the change was insignificant. I would think that the arm mass increases with length, and even if the rigidity is maintained, the biggest change is in the mass of the arm.