I have a custom road bike with (mostly) Shimano parts. I love to ride but I'm not so strong on the technical side.
I have quick-release wheels; I regularly (3-4 times a year) put the bike in a bag and travel by train to a cycling destination.
When I did so, upon re-assembling my bike, I noticed there was a lot of "play" in the rear wheel left-to-right. It rolls smoothly, but there is an intermittent....feeling.... as the wheel rotates when I am riding it.
The feeling is a feeling of some friction, but not enough to actually retard the forward motion of the bike or anything, just enough to allow my feet to feel it in the pedals. It appears to happen once a rotation, as if I am going fast enough, I can't feel it anymore, but when I am going slow, there's certainly a pace to it.
I've heard anecdotally from a friend I may need to adjust my cone & bearings, as they may have become too loose. Does anyone have any advice on how to do this, or things I should watch out for? I'm trying as much as is possible not to ride until I sort this, but since I commute by bike, it's urgent.