Your chain link size is wrong for the gypsy. You likely don't have "anchor" chain, which has a slightly shorter link (i.e. more links per foot) than standard chain. Despite having bought it as anchor chain, this can happen. Recently, a friend of mine bought some chain and even on the website the specs were right, however, when I went to his boat, and looked at the chain link length, it was too long. I laid the chain in the gypsy, and it was clear that the link length was longer than the teeth in the gypsy were built for. It was quite a rigmarole to straighten this out. The supplier sent a rep to the marina, and it turned out that even they were not aware of the issue, but could easily see it when they looked. They measured the chain and sure enough it was wrong even by the specs on their own website. They said that their supplier had made it wrong and they made good my friend. For the longest time, he was sure that I was full of malarkey, but in the end he was happy he listened. Ken Bloomfield On 10/2/2012 12:00 PM, trawlers-request@lists.trawlering.com wrote: > I have an Horizon 900 vertical windlass install on my trawler. It appears to be installed correctly. The windlass is centered on the anchor roller and the roller is only a couple of degrees lower, instructions indicate the roller can be no higher than 6 degrees above the windlass, no mention on below windlass. The chain locker is deep with more than foot, more like 2 feet clearance from top of the chain pile to the windlass. I check the gypsy and it is the correct one for 5/6” G4 chain. My question is what would cause the chain to “hop” in the gypsy when retrieving the rode. When the chain is straight up and down and no load or angle it works normally. However when there is a slight angle or slight load it “hops”. Any ideas on this would be appreciated. Thank You > > Duane Maher