Over the course of say a 10 minute period of riding, I will get this "clunk" noise from the bottom bracket one or two times. It feels and sounds like one of the crank arms is hitting a kickstand (I dont have one). Neither the pedals or the crank arms needed to be tightened. Also, there is no play in either.
The "clunk" doesn't happen at any specific crank position, or any specific amount of pressure. Sometimes it will be after a short coast, when I start pedalling again. Other times it will happen during normal pedaling (not mashing or sprinting or anything). I dont feel a skip in pedalling resistance, it just feels like one of the crank arms has hit something metal (but something like a kickstand that will move out of the way).
I really can't figure out what the crank arm may be hitting, and due to my fairly noobish understanding of the mechanics of bicycles and troubleshooting I can only guess that it may be a bottom bracket problem.
Thanks in advance.