Large Delta, small motors - Counterweights ?

Hi there,

I'm experimenting with delta's ... made a large one, and maybe the arms+effectors are a bit too heavy for the NEMA 17 + A4988 combination.

[imgur.com]

I cant make it lighter (actually, it will be come heavier), and i wonder if i can keep the costs + mechanics simple enough (no gearing)

Would using counterweights - and make slower accelerations to account for more inertia - help things out ? Has anyone tried ?

Cheers

Ram