Aero road bar + stem with internal cabling advice requested
#1
Full Member
Thread Starter
Aero road bar + stem with internal cabling advice requested
I just ordered a 2019 Tarmac disc frame, I'm finally upgrading from my 2011 S-Works Roubaix. I was planning to go with the 2019 S-Works Aerofly II Carbon Handlebars and stem, but those bars are out of stock until late spring. I love the look and internal cable routing of these bars, very clean with my planned Di2 groupset and disc brakes, and very aero as well.
So now I am looking for alternatives in a lightweight aero bar + stem combo (prefer shallow drop) that will also allow for all cables to be routed internally. I have a few ideas in mind, but I am very interested is knowing what other combos members chose and if you are happy with the results? Any combos to definitely avoid?
Thus far I am completely undecided. I would like to get something ordered within the next 7-10 days though.
One combo I am considering is the Zipp SL70 + Speed Stem but I am not yet certain.
So now I am looking for alternatives in a lightweight aero bar + stem combo (prefer shallow drop) that will also allow for all cables to be routed internally. I have a few ideas in mind, but I am very interested is knowing what other combos members chose and if you are happy with the results? Any combos to definitely avoid?
Thus far I am completely undecided. I would like to get something ordered within the next 7-10 days though.
One combo I am considering is the Zipp SL70 + Speed Stem but I am not yet certain.
Last edited by LuMax; 01-26-19 at 09:37 PM. Reason: errors in first posting
#2
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Liked 9,456 Times
in
4,672 Posts
Can your frame accommodate wholly internal routing? Or are you looking for bars that feed in to a stem and then exit the stem just before the clamp for the steerer?
#3
Full Member
Thread Starter
After re-reading my post I edited it. I want internal cabling as much as possible, I would prefer them to be tucked close in to the steerer.
#4
#5
![](https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1316/fsa_cervelo_top_view_5a85842a7daa886b644058c5f6058f34697dfa4b.jpg)
![](https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x935/fsa_cable_routing_bottom_view_027f40eda1039e11b1741d3c32bf36ceeb5080b8.jpg)
![](https://cimg2.ibsrv.net/gimg/bikeforums.net-vbulletin/1882x1084/fsa_cable_routing_top_view_0877cc5195338f9015eb448225e646729970fb97.jpg)
![](https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/1185x671/fsa_flat_transition_0d8f90e46a7e0c4cd9a21058ff93885bbf13798a.jpg)
![](https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1124/cervelo_dark_pic_on_stand_522627bf054937c6aaa67d2e1856fe3ce06f6b17.jpg)
Thing is LuMax, handlebar shape is very personal. For example, I am hugely fussy about ergonomics. Very few even aero bars have a flat transition from top of hooks to shifter hoods...what is called the ramp of the bar to the shifter. Flat tops adjacent to the stem are also comfortable and aero due to being thin in frontal cross-section. Bar width is hugely important so do some soul searching before throwing down big coin for a handlebar not only shape you want but choice of width. I would say 'most' good riders don't want an integrated bar and stem...but there are exception that will live the ergonomic 'fallout' of not being able to precisely tune handlebar tilt angle in favor at the 1 watt saved at 30 mph.
![Wink](images/smilies/wink.gif)
Maybe get some ideas from this video. Keep in mind, pros in the following video aren't us. They have the benefit of a warehouse of handlebar options from a given mfr. We don't. For us, trial and error is 'very' expensive.
Good news for you is...the Tarmac does not thread the cables and hydraulic brake hoses 'through the stem' like the Venge and other aero specific 'modular' bikes. . Makes it a lot easier to size cables in particular. But still a fair amount of work to make it right if routing through the handlebar and through the frame as you intend and what I just went through with my R3.
I don't like disc brakes for where I live but I like cables routed through the handlebars and frame and will share some pics. Best way to do it...after sizing the cables and hoses approximately is...install the cables and in your case the hoses onto the handlebar and then take this sub assembly and install the handlebar on the bike.
I just built an Cervelo R3 and went through this. New handlebar. New stem. New groupset
![Smilie](images/smilies/smile.gif)
![Wink](images/smilies/wink.gif)
See how handlebar routing works with Campy. All mechanical groupsets are pretty similar. You will have a slightly different challenge with routing hydraulic hoses but really not much different all said.
A thought is...because handlebar choice is huge IMO...maybe build with a cheap handlebar intially...even with external routing under the bar tape of course...until the bar of your dreams arrives in the spring. Cheap bars can be had for a song. Meanwhile play around with dialing in your cockpit because fit is going to be quite different between Roubaix and Tarmac as it is for example between my Roubaix and R3...I choose to ride the R3 more slammed because its a bike I want to ride fast on. This bike beckons me to hammer.
![Smilie](images/smilies/smile.gif)
Post with any questions or concerns if you are new to cable routing and bike building.
Some pics for perspective including a dark pic of my new bike on the stand. Note the flat transition to the hoods which take pressure off the base (heel/ulnar nerve) of the hands. Very comfy and important with more pressure on the hands when riding a lower handlebar.
Last edited by Campag4life; 01-27-19 at 07:51 AM.
#6
Full Member
Thread Starter
Excellent post Campag4life, thanks.
I plan to stop by the bike shop tomorrow and take a closer look at the cable routing on the frame, then take a much closer look at the available options. With Di2 and disc brakes cable length and routing will be easier than rim brakes, but I still want them to be as clean and unseen as possible.
I plan to stop by the bike shop tomorrow and take a closer look at the cable routing on the frame, then take a much closer look at the available options. With Di2 and disc brakes cable length and routing will be easier than rim brakes, but I still want them to be as clean and unseen as possible.
#7
Excellent post Campag4life, thanks.
I plan to stop by the bike shop tomorrow and take a closer look at the cable routing on the frame, then take a much closer look at the available options. With Di2 and disc brakes cable length and routing will be easier than rim brakes, but I still want them to be as clean and unseen as possible.
I plan to stop by the bike shop tomorrow and take a closer look at the cable routing on the frame, then take a much closer look at the available options. With Di2 and disc brakes cable length and routing will be easier than rim brakes, but I still want them to be as clean and unseen as possible.
The Tarmac is a fantastic bike. It is a hint aggressive for me. I can ride it...maybe with a flipped up stem or some spacers...the R3 has a taller stack and a slightly longer wheelbase and is a bit friendlier to ride...but I haven't ruled out a Tarmac SL6 at some point as a stablemate to the R3.
Have fun with the build. A feast for bike guys...bike you are choosing is up top of the food chain.
![Smilie](images/smilies/smile.gif)
Last edited by Campag4life; 01-27-19 at 09:29 AM.
#8
Full Member
Thread Starter
I ended up choosing the Specialized Aerofly II bars, aND there was no way to make them "wireless".
I heatshrinked the right brake line and Di2 cable together, so ended up with just the two "cables".
I'm satisfied with the outcome, sorry for the crappy photos.
![](https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/720x425/aerobarsa_resize_5dd7fe1a173a36c73482326d6cf41f5a51c52be2.jpg)
![](https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/426x720/aerobarsb_resize_3cf6095de7e2b62cccc95886cd29ce82e23300ab.jpg)
I heatshrinked the right brake line and Di2 cable together, so ended up with just the two "cables".
I'm satisfied with the outcome, sorry for the crappy photos.
![](https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/720x425/aerobarsa_resize_5dd7fe1a173a36c73482326d6cf41f5a51c52be2.jpg)
![](https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/426x720/aerobarsb_resize_3cf6095de7e2b62cccc95886cd29ce82e23300ab.jpg)
![](https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/704x720/aerobarsc_resize_401347ef241b7ddd25f61752522565944c5e15ce.jpg)
Likes For LuMax:
#9
Senior Member
The heat shrinking was a great idea. It looks great. Nice and clean
Likes For Kimmo:
#11
Full Member
Thread Starter
Likes For LuMax:
#12
Newbie
Join Date: Jun 2019
Posts: 3
Likes: 0
Liked 0 Times
in
0 Posts
#14
Pointy Helmet Tribe
Join Date: Feb 2009
Location: Offthebackistan
Posts: 4,338
Bikes: R5, Allez Sprint, Shiv
Liked 627 Times
in
295 Posts
I am surprised there arent more brands making stems like this. You dont have to route the cables inside the stem either - just having a channel on the underside of the stem, with some kind of clamp to keep the cables in place (ala the Spesh Venge stem) would tide up the wiring a lot. A little bit of cable pokes out from under the stem and enters the frame shortly after.
#15
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Liked 9,456 Times
in
4,672 Posts
I am surprised there arent more brands making stems like this. You dont have to route the cables inside the stem either - just having a channel on the underside of the stem, with some kind of clamp to keep the cables in place (ala the Spesh Venge stem) would tide up the wiring a lot. A little bit of cable pokes out from under the stem and enters the frame shortly after.
Likes For dscohen: