I have a 2012 GL1800 with a 2014 Motor Trike conversion. The u-joint and drive shaft were recently replaced under warranty. I've been riding and felt like I was hitting a pothole every so often. Today this happened and there was definitely no pothole. I hear a loud clank, feel a jolt and lose drive for a moment. I was downshifting from 5th to 4th in the MPH range because the traffic in front of me was slowing. I'm hesitant to ride again because I don't want to get stuck in the middle of some back roads and have to call for a tow. When the u-joint broke it damaged the engine out spindle and the dealer replaced it and the bearing (at my cost). They had to drop the engine for that. What could cause the clank and jolt?
Any thoughts are most welcome.