JRA
Well-Known Member
I didn't have issues with the robustness of the gearing of the hub at all. Actually I had it attached to a Schlumpf 2spd bb drive using a front hub and it was the normal one and it shifted fine as it only was under my power as normal.
What I didn't like was the lack of a solid system to keep it in the vertical dropouts. As I said there are specific "washers with tabs" on them and that wasn't clear at the time it was set up by the mechanic I entrusted the install to as he was familiar with the Di2 system and there were no clear instructions included as to their importance. As I was putting in significant amount of input the hub spit out of the drop outs resulting in severing the control wire. It also could have been that the nuts weren't torqued enough as I had checked them with a 15mm wrench not a proper torque wrench, but after getting the correct tab washers I still didn't have faith that it wouldn't happen again, at least in vertical drop outs and decided to just go back to the derailleur setup.
Quite frankly the shifting experience wasn't all that dramatic a change and I doubt I will ever go with electronic shifting again nor an IGH. The added weight and complexity just isn't worth it for me but I am the type that has to at least try things and there were good reports about the Di2. I have many years of derailleur use so I know enough to shift down approaching a stop plus my front hub motor has a throttle control so if I don't I can work my way back up to the gearing without issues if I don't. Don't let me stop you from doing it though!
What I didn't like was the lack of a solid system to keep it in the vertical dropouts. As I said there are specific "washers with tabs" on them and that wasn't clear at the time it was set up by the mechanic I entrusted the install to as he was familiar with the Di2 system and there were no clear instructions included as to their importance. As I was putting in significant amount of input the hub spit out of the drop outs resulting in severing the control wire. It also could have been that the nuts weren't torqued enough as I had checked them with a 15mm wrench not a proper torque wrench, but after getting the correct tab washers I still didn't have faith that it wouldn't happen again, at least in vertical drop outs and decided to just go back to the derailleur setup.
Quite frankly the shifting experience wasn't all that dramatic a change and I doubt I will ever go with electronic shifting again nor an IGH. The added weight and complexity just isn't worth it for me but I am the type that has to at least try things and there were good reports about the Di2. I have many years of derailleur use so I know enough to shift down approaching a stop plus my front hub motor has a throttle control so if I don't I can work my way back up to the gearing without issues if I don't. Don't let me stop you from doing it though!