Check the width of your chain is correct for your front sprocket.I noticed a weird sound coming from the front sprocket area when I changed my rear wheel, rear sprocket and chain. The sound isn't affecting how the bike runs (still rides like a champ) but it concerns me to go past 3rd gear because the sound gets louder from 1st - 2nd - 3rd (I don't want to hurt her). I took the front sprocket off and moved the chain away from the thread so just the nut was spinning and there was no noise. I loosened the wheel adjustments and experimented with the amount of slack on the chain... sound is still there. I was wondering if it could be an alignment issue with the rear sprocket to the front sprocket... As in, if you install the rear sprocket just one nut over (spinning the sprocket so the nut is in the spot next to it) the distance would be different. I took the old sprocket and placed it over the new one and began to spin one of them and match up the nut holes to see if the teeth match up and they only match up perfectly in 1 specific spot. Its hard to explain but I have a video of the sound that I will post soon. I noticed a lot of posts about weird sounds but its hard to compare the sounds when you don't know what they sound like.