Anyone doing this?
I have some RS7s that came with a 110mm BCD 5 Arm spider and rings.
The middleburn rings are plain Al and 3.5mm wide.
I can fit the 36T in the outer position and it's fine. The ring will clear the back of the crank arms and mount flush.
However, when I try and fit a 5arm middleburn hardcoat (? I think) which is 5.14mm wide the ring is to fat to sit behind the crank arm and still bolt on to the outer position.
I bought a 4-Arm dual spider so that I could use some 4arm 36T rings I have. Again the same problem, neither of the rings I have iwll mount in the outer position and still go behind the crank arm (Thorn ring = 5.0mm fat and e-thirteen = 3.2mm). The 4arm spider is supposedly for DH etc and gives a 50mm chainline.
The 5arm spider isnt a new one and seems to give exactly the same chanline as the 4arm Dual spider, so Im not sure it gives the 48mm chainline suggested on the middleburn website for the new spiders.
Does anyone run a middle ring in an outer position on any 4arm or 5arm spider? and if so which spider and what ring?