Bicycle Barrel Adjusters And How They Work

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5 жыл бұрын

A look at bicycle barrel adjusters and how the work
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Пікірлер: 54

@vincentbutton5926 5 ай бұрын

Thank you for explaining what barrel adjusters actually do!

@GarethFrederikEllmer 3 жыл бұрын

_What you understand you will not forget._ Thank you chap 👍

@Tchairdjian 5 жыл бұрын

And thanks again, I think you were as thorough as it could be. Good job.

@janpeterson9586 4 жыл бұрын

Thank you for a very nice video. Especially the details about the R8000 barrel adjuster was usefull. I have been wondering why my adjuster seemed to work and other's not. Now I know why. Purely by luck I have crushed the outer rubbery peace between my fingers while turning, and then it adjusts the cable tension all right. And as it is very rare that the derailleur needs adjusting, I'll wait and see until it stops working, and now I know how to replace the barrel adjuster with an older version. Thanks again.

@activeal Жыл бұрын

The cable broke on my rear derailer so I'm in the process of replacing the inner and outer cables, and re-indexing the right shifter. This video provides critical information to this end.Thanks!

@denis_roy_7 5 жыл бұрын

Good work! In other words, by compressing (decompressing) the outer cable (housing), the barrel adjuster tightens (untightens) the cable.

@HikingFeral 3 жыл бұрын

Maybe I'm thick mate but I don't understand how adjusting the outer plastic cable, effects the inner wire? Surely the wire is designed to float up and down the outer and to tighten it, you would have to grab the wire itself? How can moving the outer plastic tighten the inner when it's not gripping it tight so it can move freely? I've just fitted a new derailleur you see and it uses a different barrel adjuster. It's just a metal bolt with a hole for the housing that's hollow for the wire to run through. I'm having a nightmare fitting the new mech and it's all blowing my little mind

@GarethFrederikEllmer 3 жыл бұрын

Think of it as someone pulling on the sleeve of your jumper.

@spinnie0 Жыл бұрын

Okay I was in the same boat as you and looking up every video I could find, but I *think* I finally got it now, so let me describe it how I think it works (sorry, lengthy explanation ahead, but all the "short and simple" explanations didn't click for me). Let's identify a few points along the length of the inner cable. Inner cable is attached to the derailleur lever at point A. Inner cable goes into the outer cable at point B, which is a point fixed to the frame of the bike. Inner cable comes out of the outer cable at point C, which is also a point fixed to the bike frame. Finally, inner cable attaches to the shifting lever on the steering wheel at point D. Now as I mentioned points B and C are at fixed positions attached to the frame, so they will never move. The inner cable is a fixed length, and its length is combined of 3 sections. A->B + B->C + C->D. Now when you turn the barrel adjuster so that it comes out, it essentially lengthens the outer cable. This means that length B->C will increase. Since points B and C are attached to the frame, it basically means that the outer cable has to buckle out a bit. This means, the outer cable won't be in a straight line between points B and C anymore, so the length that the inner cable traverses between fixed points B and C increases, even though B and C are fixed points on the frame. This is because the inner cable is forced to follow the buckled path of the outer cable, so it travels in a less direct route from point B to point C. Now if B->C is longer, but the length of the inner cable remains the same, that means A->B and C->D must become shorter. Because B and C are fixed points on the frame, that means point A has to move towards point B (i.e. the point where the inner cable attaches to the derailleur gets pulled towards the fixed point B, and thus gets tighter) and point D has to move towards point C (i.e. the point where the inner cable attaches to the shifting lever on the steering wheel gets pulled towards fixed point C, and thus gets tighter).

@ArthurD 11 ай бұрын

To keep things short, you're increasing the travel distance of your cable. But since the cable is attached to both ends, it wants to retract, but it can't, so it pulls whatever is attached to it. In this case, a derailleur.

@chip2881 10 ай бұрын

@@spinnie0great explanation. Thanks for writing that

@popinpavel8589 5 ай бұрын

⁠@@ArthurDthanks

@zyghom 4 жыл бұрын

Infind down tube barrel adjusters very helpful as you can adjust while riding without stopping

@benji1681 Жыл бұрын

Invaluable information thanks for your hard work

@raviramiah5498 4 жыл бұрын

Very well explained , thanks !

@rymensymen1994 Жыл бұрын

Amazingly detailled video !

@capthook1 4 жыл бұрын

Thank you very much! This is exactly what I was looking for. Great explanation.

@jaspersaint8495 3 жыл бұрын

i guess it's kinda randomly asking but does anyone know a good place to watch new tv shows online?

@mikeypox 2 жыл бұрын

I am glad that you took them apart, to show what is happening inside. My bike has two-part barrel adjusters on the handle bars and the brakes. I don't know if this is bad or good, or why mine have 2 nuts at each end.

@barrymorris1637 3 жыл бұрын

very practical and easy to understand

@hosseinshamloo 3 жыл бұрын

nice deep explanation, Thanks

@simoncross1677 Жыл бұрын

Thanks for that, good explanation.

@nowthenad3286 3 жыл бұрын

Thanks - Great video!

@reflexreaction3797 4 жыл бұрын

Thank you, helped a lot :)

@goosedawgg 3 жыл бұрын

Thank you!!!

@mahermoussallati791 2 жыл бұрын

Well explained 👏

@rajeshmohanty2070 4 жыл бұрын

Nice video! After removing my barrel adjuster, I'm unable to screw it back completely into the rear mech. Please let me know what can be done.

@vaux_manvv7520 4 жыл бұрын

I really appreciate these videos. Can you do one about putting r8000 brakes on.

@JUSSTTIINFU3K 4 жыл бұрын

You’re a genius

@marionsutcliffe1119 2 жыл бұрын

Gah, still can't understand how a thingy around a metal cable (like on my Fuji rear shifter) can tighten that cable. I could understand if the cable was not continuous, so it was moving the 2 ends closer or apart.

@marionsutcliffe1119 2 жыл бұрын

Got it! The distance of the path between lever and derailleur (or brake) is determined by cable housing length plus bare sections. The barrel adjuster lengthens the housing i.e. lengthens the path (or shortens). But the steel cable does not stretch, so the derailleur must move towards (or away) the lever.

@nejolo9563 3 жыл бұрын

I have to replace shifting cable barrel adjusters on my down tube. They are old school late 90s style for Campagnolo cables. Does it matter if the barrel adjusters are not made for campagnolo. I’m assuming barrel adjusters would work with all cables. Am I right? Could I just recycle some adjusters from some unused old bike? Thanks

@cygnusxl5 11 ай бұрын

Is the clip, that is on the barrel adjuster thread when new, just there to hold everything together until you assemble things or does it have a purpose? I'm using the barrel adjusters on the downtube which already has threaded bosses welded.

@Tchairdjian 5 жыл бұрын

Thanks, that was me who asked

@FreeToCycle 5 жыл бұрын

👍

@saumilsunilshah5663 3 жыл бұрын

But your name 😁

@bauke-LV426 3 жыл бұрын

06:54 "shortening the distance there".... Where exactly? I spent the last 15 minutes thinking about this mystical screw. I know lefty-loosey tightens the cable, but I just can't get my head around it. For some reason. Anyways: you're the first guy I find to actually take the time to explain HOW it works, rather than how to operate it. Thanks! I think I got it! I think :)

@thehuge0 3 жыл бұрын

As you turn it counter-clockwise the barrel adjuster pushes the cable outwards, which doesn't shorten the cable, but shortens the space that it occupies. Imagine holding a ruler between the palms of your hands at its two short sides. If you push one palm towards the other the ruler will start to bend as you increase the tension. Same applies to the cable.

@bauke-LV426 3 жыл бұрын

@@thehuge0 thank you, makes sense! I finally managed to understand it :)

@thehuge0 3 жыл бұрын

@@bauke-LV426 no worries :)

@Macm73 3 жыл бұрын

Thank you . Been trying to understand this for ages. But the cable runs through the outer cable and adjuster barrel independent so how does it tension the steel cable is the part I couldn’t get my head around 🥴🤡. You have just explained it for me🥲. Now I can sleep easy😂👍

@marionsutcliffe1119 2 жыл бұрын

@@Macm73 I'm still stuck ... Any chance for some hints?

@m_swastik 2 жыл бұрын

How to put back a barrel adjuster if it comes out all the way while removing the slack ? How to make aure the inner wire would have the last adjusted tightness while putting in back ?

@michaelfasher Жыл бұрын

Do you need the outer plastic part, the spring is also a pain in the ass.

@ricopaolongaw4446 4 жыл бұрын

what about the L and H screws when istalling, do they need to be full screwed all the way or they have to be very loose thats about the taken off? im new and trying to see where should i start with it

@FreeToCycle 4 жыл бұрын

Which derailleur are you trying to fit?

@emareene 3 жыл бұрын

I missed my brake's barrel adjuster, are there replacements available in bike shops?

@lonegroover 3 жыл бұрын

Amazon is your friend

@ThePhilvantwo 5 жыл бұрын

Hi, I recently broke a frame and swapped everything over to a new frame with internal cables, I didn't fit barrel adjusters and I'm getting chain rub on the front mech, will a barrel adjuster stop this happening? Thanks!

@FreeToCycle 5 жыл бұрын

Philip probably won’t help as the limit screws effect how far the derailleur moves left and right, depends where the chain is rubbing could just be alignment issue.

@ThePhilvantwo 5 жыл бұрын

@@FreeToCycle yeah I thought that. The old friction levers were better on the front mech! Thanks anyway.