r600 pave shifter is a proper etube device, whereas the sprint shifters are just peripherals for the brifter not having their own transciever.
So therefore the above should work with a 3 port?
I'm running an r600 into a 5port to a 6870 mech. No other shifters.
It would, but you'll need another junction box otherwise you won't have a port for the cable running to the rest of the system. A 5 port might be a neater solution, otherwise you'll need an extra junction B box to connect the shifters.
@onyerbike started
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r600 pave shifter is a proper etube device, whereas the sprint shifters are just peripherals for the brifter not having their own transciever.