Install Di2 without removing BB
Hi all,
Hopefully I am not double posting but couldn't quite find an answer to my question.
I got hold of a Shimano R8070 disc Di2 groupset and really fancy installing it on my bike myself.
I have a Giant TCR ready for internal routing. Currently have Ultegra mechanical with discs on it.
Do I need to remove the bottom bracket in order to route all the junction boxes and cables? If so, I guess I will leave it to my LBS but really would like to do this myself!
Cheers all!
Hopefully I am not double posting but couldn't quite find an answer to my question.
I got hold of a Shimano R8070 disc Di2 groupset and really fancy installing it on my bike myself.
I have a Giant TCR ready for internal routing. Currently have Ultegra mechanical with discs on it.
Do I need to remove the bottom bracket in order to route all the junction boxes and cables? If so, I guess I will leave it to my LBS but really would like to do this myself!
Cheers all!
0
Posts
De Sisti wrote:
This is one of the silliest threads I've come across.
Recognition at last Matthew, well done!, a justified honour
Not worried, just don't have the tools required.
Just asking.
You could probably buy the tools to remove the B.B. for a few quid. A fraction of the price of getting someone to fit your group set.
Then you can enjoy fettling to your hearts content
just buy the tools - you can then do this little job, change the b/b when it needs to be changed, and so on.
De Sisti wrote:
This is one of the silliest threads I've come across.
Recognition at last Matthew, well done!, a justified honour
Looks like I would have to buy 2 different tools, one for removal and one for inserting again... ?
NO. Di2 cables go inside on an integral cabled bike. You definitely wouldn't run them down the inside of the downtube and thread them through the cable guide under the BB.
The single long cable from Junction box A (whichever type you use) simply goes along the donwtube to Junction box B housed in the BB area. Cables from the internal battery and front and rear derailleurs then simply plug into Junction box B. With everything connected, you push Junction box B away from the BB housing to either up the seat tube or back up the downtube, so you can fit the BB. Make sure you install the BB sleeve too.
Same tool to remove and install.
Not if it's a press-fit BB
or alternately you can buy a press with a blank for various bottom bracket standards for about £40.
or both
Tooltastic
IG: RhinosWorkshop
I have swapped group sets 2 or 3 times and I have the reinsertion tool but not the extraction.
Extracting a PF BB is fiddly in my experience but doable , the problem is if you use the sleeve you can’t get the to inside so to speak.
If I swap groups I tend to just buy a new B.B. and pull the other one out regardless.
https://www.ebay.co.uk/itm/Burton-Bikes ... ppS7DcdQqw