BBL
Member
I have recently completed the build of my Silvio 2.0, except for the dozens of tweaks that will occur during the first several hundred miles or so. I have not seen a lot of posts related to mounting Di2 shifters on a Silvio, so I decided to share my installation. This task was made easier because I chose to install the 100mm chain stay extender. First some pictures of the finished product.
I drilled a hole at the base of the boom. It is offset about 8 deg from the centerline of the bike to allow a little more clearance around the forward derailleur post. All excess wire runs are contained within the boom. The wires run from the shifters, along side of the handlebar, then through the slider at the base of the handlebar. The controller box attaches under the slider with a velcro cable tie, as shown in the picture below.
The Di2, 4-wire junction block is located inside the boom. I used a 1000mm (aka 1m) cable out of the controller module. A second 1m cable goes to the rear derailleur. A 600mm cable goes to the forward derailleur and a 300mm cable to the battery. Excess wire is stuffed into the boom.
I made some modifications to the Silvio chain stay extension. A .500" wide shallow slot was cut into the rear land and a hole was tapped as shown in the picture below. The purpose of the slot is to eliminate the possibility of the battery rotating.
It will become more apparent how this works later. The battery has a channel at its base, so a receiver for the channel needs to somehow be created for a secure fit. I used the attachment bar that came with the battery assembly and made a few modifications (cut it into pieces and machined the widths to suit). The picture below shows more of the details.
The pin forward of the attachment flat head screw in the rear is required to prevent the three pieces from rotating. I could have machined a single custom piece, but I was in a hurry. So modifying the parts that I had in hand was much faster, and quite acceptable. A view from the other side is shown below.
The small piece at the rear of the assembly sandwiched between battery slide plate and the base plate serves to create a receiver for the channel on the base of the battery. When the battery slides into position, this assembly is rock solid.
I had to modify (extend) the slot cut for the forward derailleur. I am still about 1mm short of where I would like to be. Since the forward derailleur shifting has been flawless, I am not going to worry about it. But another 2mm of adjustment band would have been greatly appreciated last week. If I ever graduate into a larger chain ring (I am currently using the compact version), this won't be an issue. Hopefully, I won't be grinding in the other direction if I ever graduate.
I very much like the performance of the Di2 shifting. Both forward and rear are extremely smooth, easily shiftable, and completely silent. I also appreciate the auto-trim feature. I have SRAM Force on my Silvio 1.5. It is also very good. I chose the Di2 for the Silvio 2.0 only for the sake of experimentation, although it could easily become a luxury I soon won't be able to do without.
I drilled a hole at the base of the boom. It is offset about 8 deg from the centerline of the bike to allow a little more clearance around the forward derailleur post. All excess wire runs are contained within the boom. The wires run from the shifters, along side of the handlebar, then through the slider at the base of the handlebar. The controller box attaches under the slider with a velcro cable tie, as shown in the picture below.
The Di2, 4-wire junction block is located inside the boom. I used a 1000mm (aka 1m) cable out of the controller module. A second 1m cable goes to the rear derailleur. A 600mm cable goes to the forward derailleur and a 300mm cable to the battery. Excess wire is stuffed into the boom.
I made some modifications to the Silvio chain stay extension. A .500" wide shallow slot was cut into the rear land and a hole was tapped as shown in the picture below. The purpose of the slot is to eliminate the possibility of the battery rotating.
It will become more apparent how this works later. The battery has a channel at its base, so a receiver for the channel needs to somehow be created for a secure fit. I used the attachment bar that came with the battery assembly and made a few modifications (cut it into pieces and machined the widths to suit). The picture below shows more of the details.
The pin forward of the attachment flat head screw in the rear is required to prevent the three pieces from rotating. I could have machined a single custom piece, but I was in a hurry. So modifying the parts that I had in hand was much faster, and quite acceptable. A view from the other side is shown below.
The small piece at the rear of the assembly sandwiched between battery slide plate and the base plate serves to create a receiver for the channel on the base of the battery. When the battery slides into position, this assembly is rock solid.
I had to modify (extend) the slot cut for the forward derailleur. I am still about 1mm short of where I would like to be. Since the forward derailleur shifting has been flawless, I am not going to worry about it. But another 2mm of adjustment band would have been greatly appreciated last week. If I ever graduate into a larger chain ring (I am currently using the compact version), this won't be an issue. Hopefully, I won't be grinding in the other direction if I ever graduate.
I very much like the performance of the Di2 shifting. Both forward and rear are extremely smooth, easily shiftable, and completely silent. I also appreciate the auto-trim feature. I have SRAM Force on my Silvio 1.5. It is also very good. I chose the Di2 for the Silvio 2.0 only for the sake of experimentation, although it could easily become a luxury I soon won't be able to do without.
