2 Wireless Router setup

I just purchased a new router to take advantage of the wireless AC, but now I can't access the hard wired devices hooked to my original router.

My original setup was:
Cable modem/wireless router to wired NAS drive and wireless computer and wired devices

New setup is:
Cable Modem to wired NAS and wired new router and wireless devices to each router

Now I can't accesss the NAS if connected to the new faster router. Any thoughts on how to fix this?