3T Strada sub 6kg goal with cable disc and mechanical shifting

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GrafZeppelin
Posts: 21
Joined: Wed Mar 16, 2016 11:14 am

by GrafZeppelin

Thanks Takolino for all your advice!

I finally got my Strada built and decided not to use 3d-printed spacers because I needed to get the stem low. Anyway - I replicated your routing to front brake via steerer tube and that combined with Pro Vibe stem and heatshrink on top on exposed cables resulted pretty clean cabling.
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dialchoose
Posts: 5
Joined: Sat Mar 26, 2022 12:55 pm

by dialchoose

I just ordered a Strada seatpost for the Ritchey clamp. The weight of it (size L) was 135g. My old Strada seatpost is 150g (size S). I think 15g is not much saving. I send it back.

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stanvr
Posts: 43
Joined: Tue Jun 30, 2020 6:26 pm
Location: Netherlands

by stanvr

GrafZeppelin wrote:
Fri Apr 08, 2022 12:29 pm
Thanks Takolino for all your advice!

I finally got my Strada built and decided not to use 3d-printed spacers because I needed to get the stem low. Anyway - I replicated your routing to front brake via steerer tube and that combined with Pro Vibe stem and heatshrink on top on exposed cables resulted pretty clean cabling.
Can you elaborate more on how you routed the front brake hose? This seems very very clean! Does it go through the handlebar, through the stem, into the fork? How does it still clamp the steerer then?

GrafZeppelin
Posts: 21
Joined: Wed Mar 16, 2016 11:14 am

by GrafZeppelin

stanvr wrote:
Wed Apr 13, 2022 9:56 am
GrafZeppelin wrote:
Fri Apr 08, 2022 12:29 pm
Thanks Takolino for all your advice!

I finally got my Strada built and decided not to use 3d-printed spacers because I needed to get the stem low. Anyway - I replicated your routing to front brake via steerer tube and that combined with Pro Vibe stem and heatshrink on top on exposed cables resulted pretty clean cabling.
Can you elaborate more on how you routed the front brake hose? This seems very very clean! Does it go through the handlebar, through the stem, into the fork? How does it still clamp the steerer then?
Sure!

Like described on this thread, the fork has a channel from steerer to the left leg with cable opening. It takes some work to push the hose through but it can be done.

The handlebar is Deda Superzero dcr, which has a routing for cable. The stem is Pro Vibe, which has a routing for Di2 wires, but it can be also fitted with hydraulic hose:

https://road.cc/content/review/227460-pro-vibe-di2-stem

Then I just got expander with cable routing, like this:

https://r2-bike.com/SUPERNOVA-Expander- ... lug-KP651X

I needed to be sanded a bit to fit the 3T steerer tube.

Theres some pretty sharp bends with the hose but it seems to work flawlessly. Altough I have not had a chance to test it outdoors yet.

Downside is that stem removal requires removing of hose and brake bleed. But im confident with fit and regreasing of bearings can be done by detaching the brake mount from fork

stanvr
Posts: 43
Joined: Tue Jun 30, 2020 6:26 pm
Location: Netherlands

by stanvr

Wow wow, I didn't know the pro vibe had room for a hydraulic cable (or di2 for that matter). I thought you might had the steerer cut way too low with what I would be comfortable with, but this is clever! Looks really clean. Im thinking of maybe getting an Exploro, this can make that choice perhaps a little bit easier ;)

GrafZeppelin
Posts: 21
Joined: Wed Mar 16, 2016 11:14 am

by GrafZeppelin

Yeah - I had normal 3T stem originally and I was considering option to cut the steerer low but I was not comfortable with that either. When looking for other stem options I found the Pro Vibe. It has marking for steerer tube cut limit inside and you can cut the steerer there and still fit the hose.

There some work to get it all done, but I think it pays off.

takolino
Posts: 325
Joined: Sun Nov 13, 2016 9:11 am
Location: USA, SF Bay Area

by takolino

FSA ACR stems are a better option imo. More room for cable routing and a top cap that covers a more generous bend of the brake hose. I ran brake cable and it still works. You can easily run both shifter cables and brake over the top. Go back to page 9 for some early exploration of this.

dialchoose
Posts: 5
Joined: Sat Mar 26, 2022 12:55 pm

by dialchoose

takolino wrote:
Sun Feb 28, 2021 9:56 am
Image
@Toybota, fork has very similar clearance to the chainstays. About 3mm clearance measured with 3mm allen key.
How do you got the housing all the way through the fork until the brake?

takolino
Posts: 325
Joined: Sun Nov 13, 2016 9:11 am
Location: USA, SF Bay Area

by takolino

It's a multi-step process.
First, confirm that your fork has a path through the crown by blowing into the steerer.
Next, tie a small nut, like a M3 or M4 to a thin thread and see if you can pass it through the brake exit hole on the fork leg and let gravity take it through the fork steerer. You may be able to help it with a magnet.
Next, tape the thread to a brake cable and see if you can pass that through. This may be tricky because the cable is stiff and it might have a harder time getting through the crown area. You may need to bend the cable end slightly. You may need to do an intermediate step with a thicker string so you can get a stronger connection with the cable. You may need to pull pretty hard on it. An inner plastic cable housing that sometimes come with segmented housings makes the job easier.
Once you have a cable through the fork, you should be able to get the cable housing through by pushing it as you pass it over the cable. The cable will act as a guide and you basically push it as you twist the housing to tease it through. It may help to tug on the cable when you get stuck. It takes a little patience and maybe some repetition. Difficulty will depend on how much space you have in the crown area. If you have trouble, try going the opposite direction. I've done this with two Strada forks successfully.
Good luck!

dialchoose
Posts: 5
Joined: Sat Mar 26, 2022 12:55 pm

by dialchoose

Thank you for your discription. I think I will try it in autumn. :beerchug:

takolino
Posts: 325
Joined: Sun Nov 13, 2016 9:11 am
Location: USA, SF Bay Area

by takolino

NP! I may have made it more complicated than it needs to be. You could first try jamming a cable through. Twist the cable as you try to snake it through. You may be able to get it through without all the trouble.


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stalkersk
Posts: 48
Joined: Fri Aug 26, 2016 10:44 pm

by stalkersk

Hi Takolino, thanks for sharing this, I was able to to the same on my Exploro Ultra. Maybe tip which can help, I routed gear cable through the hose and it easily found a way into the steerer from bottom of the fork, then it needed just one push/pull to get through the bend in the fork.

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