i guarantee that if you get a 32t chainring and a 12t track cog that you won't be able to see the cog at all...it'll be completely covered by the chain and the lockring...it'll look like the chain is driving the hub itself except for the few teeth poking out the front of the cog where there is no chain...even 39t chainrings look tiny to me on track bikes...plus it'll save you the trouble of welding a cog and ruining a perfectly good track hub...