Fitting di2 to an old frame

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Briscoelab
Posts: 1513
Joined: Thu Jan 26, 2006 6:01 pm

by Briscoelab

I did my own internal di2 conversion on a Tarmac SL2. It was dead easy.

Cutting a window into the aluminum BB shell took a little work, but just take your time and it's no problem.

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Danza
Posts: 134
Joined: Thu Jun 27, 2013 12:41 pm

by Danza

Did this to a system six.

Slightly open up rivet hole for head tube cable stop, open up internal BB into DT and ST, open up chain stay drain hole and drill one final hole in ST for FD.

kdne80
Posts: 5
Joined: Fri Jun 24, 2016 2:21 am

by kdne80

I am going for di2 as well

2old4this
Posts: 366
Joined: Mon Jan 13, 2014 7:26 am

by 2old4this

I see quite a lot of us going with these custom modifications but the bottom line is, one would need
- one hole in the down tube (6 mm)
- one hole on the seat tube (6 mm)
- at least one bigger hole on BB (8x16 mm if my memory is correct)
Isn't that taking too many chances while going down on a hill 40-45 mph? It may be ok if the roads are perfectly flat but would the frame be really safe if you hit a pothole?

I recommend going with eTap. Yep, the front derrauleur is not as good as DI2, and the rear one is not as fast (I have both.) Nonetheless, you've got to be able to trust your bike, right? Then again, it is just my opinion...

glepore
Posts: 1408
Joined: Thu Mar 28, 2013 4:42 pm
Location: Virginia USA

by glepore

No, its not taking too many chances. These holes are trivial if done correctly. I've converted several bikes, no big deal. Most bb's are seriously overbuilt, and the holes in the tubes are negligible.
Cysco Ti custom Campy SR mechanical (6.9);Berk custom (5.6); Serotta Ottrott(6.8) ; Anvil Custom steel Etap;1996 Colnago Technos Record

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