I'm trying to change the biggest cog on a Regina Oro 5-sp freewheel to an even bigger cog. Right now I'm just trying to take the cogs off the freewheel so I can see what the last one looks like, to see if I have a replacement larger cog that will work. I've never worked on an Oro---so far I've had to unthread (with whips) all the cogs. The 3rd cog is balking and seems to be rotating the 5th one. So I ask about tricks or weirdnesses that I should know about. Thanks! --JP --
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Jeff Potter
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