Originally Posted by
Dean V
The cheapest and probably best option is to get what you have working properly. I have had an Ultegra 9sp triple on a tandem and it shifted great, front and rear.
Also agree with this.
We have a Calfee with Campy Centaur 10 speed shifting. Front triple shifts fine, using 50/39/28 rings.
Like Campy much better than Shimano. I have Campy Chorus 11 speed on my single and its awesome.
The newest groups from Shimano and Campy work better than the older ones, so upgrade might be worth while still being much less expensive than Di2 conversion.