I dont know how this happened but when i was changing my seatpost i saw some corrosion in the seat tube all the way down to the bottom bracket area. I did some research and found a good solution that almost worked perfect. I cleaned the rust with steel wool but at the bottom bracket area the two sides of the down tube made it impossible to clean. I put some before and after picture. It looks much cleaner but i couldnt clean it all because of the shape of the bottom bracket area. I dont know whats exactly called that part. Is there a practical solution for it? Does it still look bad and may cause a problem in the future?

Also when i was cleaning i removed the bottom bracket and realized that one part of the bottom bracket which is the middle cylinder is missing. Probably bicycle mechanic didnt put it and i just realized it. Should i be worried and order a new bottom bracket or that specific part or can i still use the bicycle as it is. I never had a problem with the bicycle using like this but i just wanted to make sure.



After

After 2

Before

Before 1