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Tarmac SL6 Di2 Wire Lengths

Posted: Mon Feb 25, 2019 9:18 am
by Cdavies102
I'm just ordering up an Ultegra 8070 groupset for my 56cm SWorks Tarmac Disc frameset and could really do with some help with Di2 wire lengths that i'll require - can anyone help please?

I'll be running a EW-RS910 bar end junction within PRO Vibe 42mm bars.

I'm also looking to buy the IEWU-111 wireless transmitter too so maybe an option of lengths with or without that. If someone can provide me with rough lengths for everything I need that would be great. I'm happy to add a little extra lengths and use cable ties to stop the additional length rattling inside the frame.

Regarding junctions, will i just need one SM-JC41 Internal junction and one EW-JC130 Y-Split harness?

Thanks in advance.

Tarmac SL6 Di2 Wire Lengths

Posted: Mon Feb 25, 2019 9:18 am
by Weenie

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Mon Feb 25, 2019 10:12 am
by Nefarious86
I tend to go a bit long to make things easy, if you want to be gram conscious measure your frame and go a little shorter where you can.

I drew this up a few weeks ago for a mate making a 1x cross setup. Just add a 300mm wite for the front derailleur to the lower junction box.

Image

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Mon Feb 25, 2019 6:18 pm
by Cdavies102
This is a useful place to start, thanks bud!

I'll start making some notes soon and measure up those lengths against my frame tonight and post them up. Cheers!

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Tue Feb 26, 2019 1:55 pm
by ParisCarbon

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Tue Feb 26, 2019 4:30 pm
by moyboy
Venge user manual has some good info on lengths..... for the back end.

https://media.specialized.com/support/c ... 104623.pdf

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Tue Feb 26, 2019 5:37 pm
by Cdavies102
Thanks guys - that's handy. I've combined Nef86's drawing with some of the lengths on the above manuals (1000mm to battery and 500mm to FD). I'm sure they're excessive but the extra weight will be negligible and it may save me sorting replacements if they're too short. Thanks!

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Tue Feb 26, 2019 6:30 pm
by C36
That seems very long (just used 700mm for the Dow tube one on a t50 Supersix evo2).
Just realised that the junction box sitting that high on the seat post add quite some length (for info it’s 1g / 100mm)


Envoyé de mon iPhone en utilisant Tapatalk

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Wed Feb 27, 2019 7:08 am
by Nefarious86
When it's a 58cm frame and your running the cable from the bb to inside the bars to hide the Bluetooth module using the y cable every mm extra is good.

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Wed Feb 27, 2019 10:31 am
by wheelsONfire
You should be able to get a "fair" measurement using laces checking (following the outside of the frame). If you feel unsecure, use some tape to fix the lace.

Re: Tarmac SL6 Di2 Wire Lengths

Posted: Wed Feb 27, 2019 10:31 am
by Weenie