Pulling trailer up a slight hill, with 2 kids and all the picnic stuff. I was peddling at the time in first gear (true, I swear ) and totaled my derailer some how, it got caught up in the spokes broke one and my derailer was all bent, one of the gears on it was missing a tooth, and was cracked. So went to bike shop where i bought it, and got a new derailer, it was the wrong one. So i bent the old one back into shape put on a new gear.
I think the point is, I should of bought a better bike with better components.