The front derailuer on the Gemini is an e-type which limits a chain guide or tensioner options for dual chainrings because the ISCG mounts are behind the derailuer mount (see picture) .
I thought I have seen in some pictures a Gemini with a standard type derailuer which would allow me to use the ISCG mounts at the bottom bracket. Is that an option?
Is there a simple roller tensioner I can use like the one I have pictured with the e-type derailuer.
Any suggestions or thoughts are welcome. Thanks
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