Hi Adam, 3 years is highly optimistic, the cambucas are rather slow growing and fruiting, like regular jaboticaba. I would say realistically minimum 5 years, more likely 6-8 years. Sorry to burst your bubble.
Good news is once they start producing they can make lots of fruit, and as you saw from my photos they can make jaboticaba look really tiny!
Oscar
No bubbles burst here...did you read my post about seeing a man wait 15yrs for a fruit?
I understand it can take some time, but judging by Murahilin's picture, I'd say the tree has been on earth for about 3yrs...so he could have fruits in 3yrs...if lucky..and of course we are all lucky to have a Plinia edulis.
U also have to remember...my plants grow faster than most! I sing songs to them, and tell them I love them every chance I get.