How To Shorten Hydraulic Brake Lines | GCN Tech Maintenance Monday
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- Опубліковано 28 лип 2024
- Having your brake cables the right length is important for routing and aero purposes, but working on hydraulic brake lines can be a daunting prospect! Disk brakes have certainly brought an added complexity to servicing your brakes versus the cables of old. In this GCN Tech Maintenance Monday, Alex will walk you through everything you need to know about shortening your brake lines for both Shimano and SRAM groupsets.
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Have you ever shortened your brake hoses yourself? How did it go?
Not yet
Many times. You can remove the brake pads before and push out the pistons a bit more than normal. After shortening the hose, you have a bit of fluid at the lower part of the system that can help to push any air that might have gone in up into the reservoir. Poor man‘s bleed.
I Don’t have the tools needed. So the hose is wrapped around the downtube 🙋🏼♂️🤷🏼
Will there be any problem if I put different mineral oil mixed on my brakes?!, I've been curious about it.
I remember doing SRAM before they had threaded olive
Excellent video. Also useful would be a video on how to make the brake line longer for when you cut it too short.
I also like sarcasm
Easy done … watch the video in reverse … sorted. 😅
Top tip, when cutting the hose have the hose pointing vertically to the sky then there is less chance of fluid left in the remaining hose dripping out, like it could if cutting horizontally.
At 3.22 you mention about greasing the nut and caliper thread. If u just put grease on the nut then the thread will push out the excess grease leaving none being pushed inside.
I'm was a plumber and we used this trick on all thread pastes or flux
Beautifully created this video. Well done. Very explicit. And I must note that you have a very good and interesting British accent, which is nice to hear, for me. Well done, I liked what you have shown here. I congratulate you, and continued success in everything you do!
I have! I just switch out my mountain bike Sram Code brakes for Shimano XT brakes and needed to shorten the hoses. I have the Park Tool cable routing kit which made running the new housing internally easy. During the pandemic I worked in a warehouse building bikes, I got tried of using other people dull housing cutting tools so I invested in a Jagwire Pro Hydraulic and Needle driver which works really well.
Just what I needed. Straight to the point, well explained. Tools are on the way, and then I can make the ridiculously long brake hose look normal. Subscribed.
Just what I needed!
Great video, thanks. Got a new frame, need to shorten some brake lines up!
Suggestions for correct grease? Shimano
I was gonna do mine today, such a coincidence
Hm haven't been this early on a GCN video in years!
Thanks Alex...Peace
@askgcntech are there difference types of hydraulic hoses between road bike and Mtb? sram and shimano?
Damn, which exact insert pin/barb and olive do I need for the 12-speed ultegra di2?
Hey great video I am a subscriber I have purchased zoom hydraulic brakes but I have a question I pinched a hole on the rear brake line I need to cut and install a new burb and Olive I need your help I don't know which barb an Olive to use can you help I realy appreciate it thank you need help
#ASKGCNTECH how do I determine if my frame can fit a Shimano 105 groupset? I want to upgrade a 7-speed Shimano tourney to the 11 speed 105 (I will also change the wheels) but I want to know how to determine if my frame can accomodate the upgrade!
#askgcntech the real question I would like to know is how do you when you have the brake hoses the correct length, I'm struggling to find a guide or video on the internet
I'm going to change my sram brake hoses. Can I displace the air in the hoses thru the lever from the caliper side or do I need to fill the hose from the caliper side before connecting to the lever? Yes, I'll bleed the system once it's full.
Got a new bike, I want to remove 3cm of spacers, will I have to shorten the brake hoses?
try doing this with all these hoses that have 10mm of hose visable between the hole in the handlebar and the shifter XD integrated hoses are an absolutely shite idea XD
ok I've cut the hose, now how do I make it longer again?
😆
Wouldn’t the reverse threading do exactly what you say it does not Alex? The reverse threaded olive is turned while being tightened onto the barb in exactly the sense that would loosen the barb… Maybe it is to prevent attaching the olive from over stressing the threads that the self threading barb digs into the hose? I suppose those are pretty delicate so over tightening is worse than slightly turning them out while attaching the olive? In any event, thread things the correct way!
No, he is correct
@@SlimPickins_07 I think Neil is correct. Never done a sram hose myself so not certain but surely it's not to aid installation but it is to prevent the barb coming unscrewed if the olive needs to come off?
@@nathanielhawkins6756 you are turning the nut to the right, the friction from that would tighten the barb, not loosen it. If the barb was regular right hand thread, it could loosen it.
@@SlimPickins_07 that's what I mean. If you want a new olive but to leave the barb in place loosening the reverse thread olive by turning clockwise would only tighten the barb. Either way I can't see how if both threads are standard that one will unscrew the other.
@@nathanielhawkins6756 it would be the nut that would unscrew the olive when installing the line. The barb is in the line tight enough that you don't have to worry about it coming out.
Hello! Is the older Ultegra R8050 Di2 Rear Derailleur compatible with the very latest 12 speed Ultegra cassette and chain? I suspect not, but it would be great to switch to 12 speed without changing the whole group set. #askgcn #askgcntech
No
Just make the cable i bigger gauge and then line the innards with a plastic thread throughout said cable from factory this would solve the risk of damaged threads take it to the ba bank
How yo fix my chain its going yo a different teeth
Example: turning my rd to 1
Then the chain go to 3
Why don’t you apply grease?
It is easy - just cut in two places and tape hose with gaffer tape!
Campag?
Can you mix and match SRAM and Shimano? Just ordered cheap hydraulic brakes as got cable brakes that aren't good so went 4 piston and not Shimano or SRAM and so wondering if can use either when shorten? I already have SRAM olive fitting stuff
Absolutely not. SRAM uses DOT fluid and Shimano uses mineral oil-based hydraulic fluid, these two CANNOT be mixed at ANY time.
@@yonglingng5640 I can't remember what on about but think might of been SRAM olive on Shimano brakes but as SRAM olive are nicer to keep perfect than try to hold hose right as do with Shimano olive
@@mlee6050 Do NOT bother trying, don't even THINK of it. You WILL void componentry warranty in doing so and risk brake failure. Are you seriously risking brake safety for the selfish desire for that slight installation convenience?
If the brakes fail and you die, that's on YOU.
@@yonglingng5640 depends where you are as if hill can slow as go up, I do it safely then
I never cared about warranty or you know when pay for few years insurance thing, I often just buy replacement and never report warranty issues even if I not void it
That tool looks like an expensive alternative to the hose clamping blocks, vice, bit of wood and mallet I was taught to use
That tool doesn't seem to be holding the hose very well? keeps slipping - being cautious or not a great tool (cue parktool fan boys hate!)
The official shimano tool is useless as well. Shimano’s barbs are just absurdly overtight for what low system pressures there are. It’d seem the blocks with a mallet is still the only way to go.
Now a video on how to bleed the brakes. Thx
They've done that. Would have been nice if they added a link to that video.
What if you need to extend the hose?!? Is there a coupler???
I have new handlebars and need 150 mm more hose......
Sorry, a new hose is the only way to go.
There are companies like zenocycleparts who offer a coupler which takes away much of the hassles shown here
It is 100% sure that air will go into the system when you cut the hose so my experience is that your system needs rebleeding. Always wondered why SRAM delivers their calipers and shifters allready bleed when 95% of all new frames is made for internal routing.
is there a plug i can use so I don't get DOT fluid in my frame?
You forgot DOT grease
Isn't it tuesday, though? For 99.9 % of the world population and, importantly, in the UK at least?
An olive? this isn’t a cooking show, we call that thing a compression fitting.
Aye
Ya right. Over pay, over think everything all for nothing.
Simplify or die.
1st comment 🤗
This isn’t a comment, it’s an observation……..
you guys need to put your videos on Rumble. much better plate form.
These cringe photos of him making a fake smile 🤦🏻♂️
Looks like me when having a shitty day but still wanted to be good in a group photo 😅