Originally Posted by
masi61
Huret Duopar with its unique 2 stage pulley cage could handle a spread like this I believe. I got rid of my eco-duopar since that upper pulley squealed for lack of lube and I could find no way to service it.
The Duopar will actually shift to a 38T sprocket and completely handle a 50-42-31 triple and a 16-38 six-speed freewheel, even when cross chaining.
@52telecaster , great job on the gearing experiment. I get all tingly when we push the envelope on our gearing! 
It's one of the things I miss about living on a flat barrier island. Now I find myself building closely spaced gearing.