![Help with shimano sc-6502 flight deck for ultegra 6600 - Only notices changes on the front derailleur but not from the rear one rendering the rpm function useless : r/bikewrench Help with shimano sc-6502 flight deck for ultegra 6600 - Only notices changes on the front derailleur but not from the rear one rendering the rpm function useless : r/bikewrench](https://preview.redd.it/nwn3ioxkw7q61.png?width=1462&format=png&auto=webp&s=960fb3db1fa0f15615d76d77f417bd958259d62e)
Help with shimano sc-6502 flight deck for ultegra 6600 - Only notices changes on the front derailleur but not from the rear one rendering the rpm function useless : r/bikewrench
Breakaway Cycles - How about a throwback. When's the last time you saw a still fully functional Shimano flight deck computer? I guess you could call it the precursor to Di2 with
![Branford Bike Shimano Flight Deck Bicycle Computer, STI Hoods, Spare Parts and Wiring Kits. Wireless, Road Branford Bike Shimano Flight Deck Bicycle Computer, STI Hoods, Spare Parts and Wiring Kits. Wireless, Road](http://www.timslife.com/imgsbike/computer/shimano/cy6514.jpg)