Di2 kit with 7970 and 6770 parts, can I do it?
08-16-14, 09:37 AM
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Di2 kit with 7970 and 6770 parts, can I do it?
Hi Everyone, I just finished installing an older (I think, I don't know how to tell, I just got a comment on one of the forums that it was 1st generation) 7970 di2 system on a folder and it works great. I was lucky enough to get an extra 7970 rear deraileur that needed a part and fixed it !. Would it be too expensive to put together a Di2 system around the rear deraileur with 6770 and 7970 parts or do they have to be 7970 specific? I won't need the front shift levers as I am using flat bars and cateye shift buttons. Would I just need a front / rear harness and battery? Since I already have the charger base I won't need it. Thanks for your input !!
08-16-14, 10:37 AM
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No, don't think so. The "first gen" 7970 is the DA version with the old style wiring and connectors while the 6770, 9-series, and new XTR DI2s all use the "newer" E-tube wiring and all are interchangeable.
Bonus note: If you do any riding in the rain (and actually it's not a bad idea otherwise), heat shrink wrap the connectors of the 7970...The newer wiring is waterproof while the first gen DA is not.
Bonus note: If you do any riding in the rain (and actually it's not a bad idea otherwise), heat shrink wrap the connectors of the 7970...The newer wiring is waterproof while the first gen DA is not.
08-16-14, 07:12 PM
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Anyone have any 7970 parts to sell me cheap? I have a front derailleur that is working but the cage that goes around the chain is broken off. Can that be replaced?
