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Front Hydraulic brake line routing

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Front Hydraulic brake line routing

Old 10-01-17, 11:32 PM
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Front Hydraulic brake line routing

So I picked up my new Giant TCX Adv Pro 2 this weekend and have not had a chance to ride it. Now I will say that I have limited experience with hydraulics and cross bikes. My previous cross bikes were all cable brakes.

However I noticed that the front hydraulic line was routed through the front fork. When I looked around the internet I either noticed internally routed forks or the line running on the outside of the fork and around the shoulder of the fork, crossing in front of the bike. The new bike has the line running inside the fork

Not say that this is wrong or bad, just wondering if this had any pending issues that I'm not aware of and I should have the shop reroute the cable. Either way I need to put some paint protector on the fork to protect from cable rub.

Picture is not my bike, but it is also a giant and has the cable routed the same way.

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Old 10-02-17, 06:55 AM
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Originally Posted by Raidboss
Not say that this is wrong or bad, just wondering if this had any pending issues that I'm not aware of and I should have the shop reroute the cable.
That routing is bad because it will limit clearance and become a mud collector. Run it on the outside.
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Old 10-02-17, 02:22 PM
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Originally Posted by cycloaptrgangr
that routing is bad because it will limit clearance and become a mud collector. Run it on the outside.
+1
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Old 10-02-17, 05:43 PM
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It needs rerouted...you may not even need a shop to do it. Just snip the zip-ties holding the hose and unbolt the caliper....reroute as you want, and rebolt/re-zip-tie.
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Old 10-03-17, 08:03 PM
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Routing it inside the fork is a failure waiting to happen.

Take it back to the shop and have them route it properly, outside of the fork, the way it is supposed to be.
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Old 10-03-17, 09:10 PM
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Almost every disc brake bike I have seen has the front brake hose or cable routed inside the fork, though most have the transition point lower on the fork leg away from the tire.
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Old 10-03-17, 10:47 PM
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It takes removing the front wheel, cutting two zip ties and removing two hex head bolts to fix this. It isn't worth the time to go to your LBS to fix.
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Old 10-03-17, 10:48 PM
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Originally Posted by TimothyH
Routing it inside the fork is a failure waiting to happen.
It's not dire. Failure isn't imminent, it will just catch mud (assuming it sees mud).

Originally Posted by TimothyH
Take it back to the shop and have them route it properly, outside of the fork, the way it is supposed to be.
Why take to a shop when it's easy to switch at home? Like two minutes of work.
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Old 10-04-17, 12:24 AM
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Here is a page with photos of the 2015 model, showing the routing on the outside:

Giant TCX Advanced Pro 2 | Gearminded
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Old 10-04-17, 09:31 AM
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Originally Posted by BluesDawg
Almost every disc brake bike I have seen has the front brake hose or cable routed inside the fork, though most have the transition point lower on the fork leg away from the tire.
what? Other than internal routing I've never seen this
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Old 10-04-17, 09:41 AM
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Originally Posted by redlude97
what? Other than internal routing I've never seen this
I have. I had the same concern when I got my RLT9. But pics show it route inside the fork.

https://forums.mtbr.com/attachments/n...9-p1090398.jpg

https://cyclingabout.com/wp-content/...T9-2016-16.jpg

https://singletrackworld.com/wp-conte.../09/RLT9-8.jpg
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Old 10-04-17, 09:44 AM
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Originally Posted by cycloaptrgangr
It's not dire. Failure isn't imminent, it will just catch mud (assuming it sees mud).



Why take to a shop when it's easy to switch at home? Like two minutes of work.

I did not say imminent or dire. Imminent and dire are your words, not mine.

I said "failure waiting to happen".


-Tim-
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Old 10-04-17, 10:02 AM
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Originally Posted by athrowawaynic
the second image would seem to illustrate exactly why an accident is such a dire and imminent issue.
clearly, this image shows a dire accident unfolding, where there has been buildup of some sort on the hose routed under the fork bridge, causing the front tire to lock up, and loft the back wheel into the air.
the rider is nowhere to be seen, having been catapulted off into the ether, possibly never to return out of orbit.
my thoughts and prayers are with the erstwhile rider.

--------

but srsly, there is no reason to not route the hose outside of the fork as suggested by many here, regardless of images to the contrary. just because there are some photos of it mounted through the fork does not mean it is the best or correct way.
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Old 10-04-17, 10:03 AM
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Originally Posted by TimothyH
I did not say imminent or dire. Imminent and dire are your words, not mine.

I said "failure waiting to happen".


-Tim-
Ok then.

Why exactly is it a failure waiting to happen?

What exactly is going to fail?
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Old 10-04-17, 10:10 AM
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Originally Posted by athrowawaynic
huh, that is way different than the OPs and would be way less of a problem since mud buildup is usually at the top of the fork
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Old 10-04-17, 10:11 AM
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Originally Posted by athrowawaynic
RLT counterpoint:
Attached Images
File Type: jpg
outside.jpg (99.4 KB, 99 views)
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Old 10-04-17, 10:20 AM
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Originally Posted by motorthings
the second image would seem to illustrate exactly why an accident is such a dire and imminent issue.
clearly, this image shows a dire accident unfolding, where there has been buildup of some sort on the hose routed under the fork bridge, causing the front tire to lock up, and loft the back wheel into the air.
the rider is nowhere to be seen, having been catapulted off into the ether, possibly never to return out of orbit.
my thoughts and prayers are with the erstwhile rider.

--------

but srsly, there is no reason to not route the hose outside of the fork as suggested by many here, regardless of images to the contrary. just because there are some photos of it mounted through the fork does not mean it is the best or correct way.
It's true. I died like 5 times on this bike. And that was just last month.

At least on my bike, I feel that routing on the outside will result in a sharp angle entering the caliper. But mine's hydro, so probably doesn't matter. Otherwise, isn't there a fear of snagging on branches if it's run on the outside?

https://imgur.com/fUWnKhQ

Man, my bike needs some cleaning.
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Old 10-04-17, 10:47 AM
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Originally Posted by cycloaptrgangr
RLT counterpoint:
Did you build yours or did a shop do it?

The hydraulic line on my RDO is mounted behind the fork. The Niner channel sales rep for the Southeast had his routed behind the fork as well and I have seen many others like this online. I've also seen them the way you have it in photos online but I can't remember seeing an hydraulic line run between the fork and tire on any bike.

This is the photo off the Niner website.



I didn't like the line rubbing against the fender mount screw and so used a cable clamp.




-Tim-

Last edited by TimothyH; 10-04-17 at 10:51 AM.
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Old 10-04-17, 10:48 AM
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Originally Posted by athrowawaynic
It's true. I died like 5 times on this bike. And that was just last month.

At least on my bike, I feel that routing on the outside will result in a sharp angle entering the caliper. But mine's hydro, so probably doesn't matter. Otherwise, isn't there a fear of snagging on branches if it's run on the outside?
sorry to hear of your dying...and that clearly you are still stuck in this earthly realm forever haunting the BF's

i'd think if the hose is still alongside the fork leg, and not looped out into space, it would not be a snag risk, and that angles don't matter much for hydro. some bikes may be ok with the hose inside the fork leg, but it all depends on the tire clearance, and other routing methods. YHRMMV (your hose routing method may vary).
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Old 10-04-17, 11:51 AM
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Originally Posted by TimothyH
Did you build yours or did a shop do it?
A shop.
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Old 10-04-17, 12:38 PM
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Originally Posted by cycloaptrgangr
That routing is bad because it will limit clearance and become a mud collector. Run it on the outside.
Agreed. I would think that would be common sense.
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Old 10-04-17, 01:19 PM
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Originally Posted by athrowawaynic
That is just standard suspension forked mountain bike routing and not a problem though it looks better to do it all behind the leg when you have a rigid fork. My Surly Karate Monkey rigid just does the behind the fork routing.


Op's issue is his hose runs under the crown of the fork and right above the tire.
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Old 10-04-17, 03:33 PM
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Thank you all for the feedback. While I don't believe this is a immediate issue, I do think that I will reroute the cable myself to run outside. Like many have said my instance is right under the crown where the mud is most likely to build and it is also closest to the tire. it a cross bike and not a mountain bike thus I'm not to worried about something like a branch grabbing the line.
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Old 10-05-17, 09:29 AM
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Originally Posted by redlude97
what? Other than internal routing I've never seen this
My 2015 AWOL, my 2018 Cosmic Stallion, my 2017 Jet 9 and my 2014 Crux all have disc brakes with the front hose or cable routed inside the fork leg. None of them cross at the tire like the OP photo, though. The problem with that routing is not that it goes inside the fork, but where it goes inside the fork.

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Clement MSOs and Stan's Iron Cross wheels by Benny Watson, on Flickr

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n04 by Benny Watson, on Flickr

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0305a by Benny Watson, on Flickr

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P1030679 by Benny Watson, on Flickr
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Old 10-05-17, 03:03 PM
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This thread is interesting.

I had not imagined nor had I ever noticed brake lines going through the fork legs until this thread came up and am surprised to see so many designed this way. The bikes with hose mounts on the front of the fork leg and caliper behind the same fork leg are clearly designed to have the cable run between the wheel and fork. This is better than outside the fork where it can be snagged.

I especially appreciate @BluesDawg for posting the photos. You work in a shop, right? I guess you've see a few bikes and I've learned something today.

By the way, the Jet 9 is nice. What tires are on the Stallion? I can't make out the logo.


-Tim-
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