Im playing Civ4 at Nobel difficulty and again and again I discover the same thing about 50-70% into the game. Im behind in the Tech-race. Never in jumbo-position; perhaps even above average - but almost never in the top 1-3 category either. I have no problems staying competitive in all other areas - with the exception of getting that elusive extra edge in the tech-race. What am I doing wrong here? Any tips?
Welcome to the Forums!
There are excellent articles written about running a successful economy, which is basically a way of saying "Teching".
Here are some pointers.
1) The larger your empire, there better you tech, especially later on in the game. Teching at 50% slider with a large empire techs ALOT faster than a smaller empire running at 89-90%.
2) Are you building cottages??? You should ALOt of these if you want to do well in teching (although there are strategies to win with minimal or no cottages). They start out low but when they reach town level are strong. Make sure you use the civics FS and US to help those towns.
3) Do you trade techs with the AIs? Find some friends and make mutually beneficial trades. Also manually research a tech noone has and trade it away to everyone, you will be amazed at how fast you can tech.
4) Try using Great People to Bulb certain techs. Favorites are Education, Philosophy, Theology etc....
5) Trade Route economy is very valuable, but only at peacetime. If your a war-monger, then you won't get much here. If you a builder or in-between (like me!) having friends with open borders (are you opening borders?) helps alot.
6) Are you build appropriate Buildings??? Libraries help with beakers, markets get's you more gold, courthouses save on costs. Leverage the leaders that have the right traits for faster buildings (creative for libraries, Organized for Courthouses).
7) Know the key technologies for you economy and get them sooner than later (Just Don't get yourself killed ignoring military).
These are
Pottery/Writing
Currency/Code of Laws
Education/Astronomy/Economics
8) Finally, there is the old Liberalism race. Win it (at Nobel you should be able to). Take the highest free tech and trade it arround to backfill what you are missing.