I have been trying to locate a noise in my daughter's Cranbrook. But, I see here that you say the noise occurs when coasting. This bike sounds great for the first 1/2-3/4 of a mile, then the noise starts. Sounds like a rubbing, but it makes it mostly, not always, when peddaling. I removed both fenders and the chain guard with test rides right after. Didn't help. I had removed the front hub and cleaned, inspected, and repacked the bearings not long ago, and that hub spins great with no noise or notchiness. That leaves the crank and rear coaster hub. Just finished going through the one piece crank and bearings. They were dry with some rust. Clened, repacked with grease, and assembled. Still has the stinking noise. However, I am glad I did the crank work, as it was my first time. Now, I am down to the coaster brake hub. Maybe I should order a new rear wheel.