I have a Bottecchia Mille frame (c.2011 or 2012 vintage, white and metallic red, looks like this: http://ysroad-maniac.com/old/2011/08/-bottchia-mille.html ) that a friend has passed on to me (in need of repair) and I have a BB30 crankset that I was hoping to use on it. Given the labelling around the BB I was expecting it to be compatible. However, upon stripping the bike down to get the frame repaired I found that the existing BB is threaded. Strangely though, it is English threaded not Italian.
Image here: https://imgur.com/a/k8L5OsV
Is it an adapter like the following?
It looks like the white frame paint also overlaps the threaded shell, which makes me think it's part of the frame, but wouldn't it be Italian rather than English, and the link at the start of the post shows an identical frame without a threaded shell!
Not sure how to go about trying to remove the adapter if it is, and if there's any doubt that it isn't an adapter, I don't want to be trying to knock the BB shell out of a carbon frame!