/r/bikewrench

Photograph via snooOG

A community of cyclists - some with questions, some answers

A forum for folks with questions about bicycle repair.

Post your problems, and we will try to get your bike rolling again. It really helps if you can provide pictures and/or video.

A community of cyclists - some with questions, some answers

Post questions to get help.

Post your problems, and we will try to get your bike rolling again. It really, really helps if you can provide pictures and/or video.

You can also consult our FAQ or the list of people willing to help locally.

Post Rules and Guidelines

  • Questions about bike repair only. If you just want to post a picture, this isn't the place for it. Full rules.

  • "Is this cracked / safe to ride?" - If you have to ask, don't ride it. We probably can't tell from a picture just what condition your bike is in. Take it to your Local Bike Shop and ask them. If it's carbon, a specialist repair shop may be required. They should have the equipment and expertise to inspect it properly.

  • Please use the weekly thread for post follow ups and acknowledgments. Tag helpful commenters if you want them to receive a notification.

Comment Rules

  1. Play nice

  2. Stay on topic / No jokes, especially not false answers as jokes.

Full rules are here.


Other Websites:

Other helpful subs:

Outlets for posts that don't belong here:

or just plain r/bicycling, which also has links to more subs.

/r/bikewrench

219,298 Subscribers

1

Right pedal arm becoming loose

So straight to the point, i have two bikes and on bith of them the right pedal arm becomes loose, i always ride on the highest gears and fast, could that be the reason?

1 Comment
2024/05/18
17:34 UTC

0

Would these bars work with road levers?

They have a 35 degree backsweep. Is that enough clearance for road levers put on sideways up where they start to curve back? Would I need to change housing and cables that I currently have? (Downtube shifters)

2 Comments
2024/05/18
17:00 UTC

1

Tektro Orion brake reach/free stroke adjustment

Hi, I want to lower the reach on my Tektro orion hydraulic disk brakes. the screw is inaccessible as it is like rolled at an angle unreachable to me. any ideas on how to adjust reach or make the little screw accessible

screw highlighted red. cannot reach due to brake lever in the way.

0 Comments
2024/05/18
16:58 UTC

1

Brake problem

Hey, I installed a new lever, and the brake hose went into the wrong threads and its bent down. It leaked first from the hose, but I tightened it more and now it doesnt leak I quess? Can I keep it like this, or shoud I do something to it? Thanks!

2 Comments
2024/05/18
16:55 UTC

1

my headset is moving

hi my headseat is moving but i tried doing several things from tutorial but i cant get it to not move should i clean of the bearings and grease them and then tighten or some other strategy to tighten them?

0 Comments
2024/05/18
16:48 UTC

1

Front disc brake “ping-ing”/rubbing when climbing hard out the saddle and leaning the bike. Steel frame and fork, is this normal?

2 Comments
2024/05/18
16:39 UTC

0

How do I tighten the this bottom bracket

Hi folks,

I've noticed some play in my bottom bracket. Can anyone help identify what type of bottom bracket I have and more importantly how to adjust it? The videos and pictures below show the non-drive side. Many thanks!

https://preview.redd.it/350b0y8cp71d1.jpg?width=4032&format=pjpg&auto=webp&s=451c857952ed8c16dd64130f9a893b0dae154c1c

https://preview.redd.it/3dp6ij9cp71d1.jpg?width=3024&format=pjpg&auto=webp&s=e2d6e9f249c9c093aac1b6af689b300badaab46e

https://reddit.com/link/1cv16k3/video/d65v6tzcp71d1/player

3 Comments
2024/05/18
16:31 UTC

1

Brakes squealing and not working

I recently upgraded to 203mm brake rotors (Shimano SLX RT64) on my Merida Big Trail 600 and since and even before they have not been working properly. When I break they are completely useless, do not slow me down at all and make a horrendous squeaking noise. I have tried using different brake pads (only resin ones) and I have cleaned up the disk rotors using brake disk cleaner. Does anyone know what I could do in this situation?

2 Comments
2024/05/18
16:15 UTC

1

Cannondale chainring question

I have a 2023 Cannondale Scalpel SE 2 with a Cannondale Hollowgram crankset. The bike utilizes Cannondale’s AI Offset for the rear hub. I’m looking to get an oval chainring and I’m not sure if I need a different chainring offset. Any help is greatly appreciated.

2 Comments
2024/05/18
16:13 UTC

1

SRAM X01 11spd derailleur not shifting to smallest cog when cable is attached.

On my last DH (Rock Field) I could hear a hit on the back, thought it was my rim as I was running low pressure. On the way home shifting was funky, sometimes shifting down sometimes not.

Cable tension did not solve the issue. Back on the stand I tried re-indexing and adjusting H/L. Only with detached cable the shifter moved down on the smallest sprocket as soon as I bolted the cable it moved up. The black plastic cable guide is practically touching the sprocket and moves when tightening the bolt. On my GX 11 on another bike there is a gap approx 1cm.

By eye nothing looks massively bent or hit. Any idea how to proceed?

0 Comments
2024/05/18
16:07 UTC

1

Getting GP 5000S Tires to Seal

Got myself a new set of GP 5000S tires but for the life of me I can’t get them to seal to my Giant PR2 wheelset. Anybody have any tips for getting them to seal? Thanks!

2 Comments
2024/05/18
15:56 UTC

1

Switching Brake Cables

Hi everyone. This is pertaining to my mountain bike, a Specialized Stumpjumper.

I injured my right wrist years ago and the injury lingers to this date. It has affected my ability to ride my MTB; all the rear braking on downhills causes me to lose feeling in the wrist to the point where I can't continue. My question is simple - can I easily switch the break cables such that my left hand controls the rear brake? It seems relatively straight forward to me but I'm no expert. Suppose the brakes cables would need to be retensioned following rearrangement? TIA

2 Comments
2024/05/18
15:31 UTC

2

Crack in chainring

On my second chainring, and I believe it is almost symmetrical, I have what looks like a crack with a bend. There are three to four around the circumference of the ring. Is this failure or is it manufactured this way to help shift? Kind of like a lift or a ramp?

4 Comments
2024/05/18
15:27 UTC

1

Play on 1 side of saddle clamp

I tried to add a new saddle on this canyon seat post with a flip head. How hard can it be... However, whatever I try there is always some play on the righthand side while the lefthand side is very tight. (See second picture) I am using a torque wrench. What am I doing wrong here?

https://preview.redd.it/3ztjexfuz61d1.jpg?width=4624&format=pjpg&auto=webp&s=ab8a540b4d30907ea285b0e62e3dc95dc4d2eb62

https://preview.redd.it/1e912xgqz61d1.jpg?width=4624&format=pjpg&auto=webp&s=3d28401f92b6998da6f2dd153191a1d9964bc28e

0 Comments
2024/05/18
14:32 UTC

0

SRAM brake piston popped - what do do next?

SRAM brake piston popped out-what to do?

I’ve had annoying brake squealing and after changing the brake pads and investing into a new disc aswell, it did not get better. Some research pointed into to direction of pistons being stuck or not pushing out evenly. And as it seems that was the reason for my squealing brake.

So I followed the instructions of resetting the pistons. Pulling the lever and pushing the pistons back in. When doing so, one piston almost popped out and leaked a few drops of liquid. Really just drops. There has been no more drops coming out. I was able to push the piston back and nothing is leaking.

However, since that happened I am not able to put any pressure on the brake anymore. Pulling the lever does not lead to anything. Pistons are also not moving and seem “stuck”. I also can’t really push them back in. Did air get into the system and is this the reason? Sorry, I’m a newbie who is obviously having his share of experiences / learnings now… 😂

What can I do to fix this? Happy for any advice.

1 Comment
2024/05/18
13:56 UTC

1

Already has crown race installed right?

1 Comment
2024/05/18
13:45 UTC

1

Get between spacer and top of cup cause by compression ring

Is it bad that compression ring causes this little gap to be there?

0 Comments
2024/05/18
13:39 UTC

1

Shimano mt200 brake lever not returning.

I already tried cleaning the caliper pistons, but the lever just rattles and doesn't disengage the brakes. Did anyone have the same issue? any suggestion is appreciated.

2 Comments
2024/05/18
13:34 UTC

1

Suntour xcr 32 air fork rebound

in videos about rebound adjustment I see people referring to clicks of rebound. my fork doesn't click once when I turn the rebound knob, but it seems to be working, it becomes slower and faster. Is this normal for this fork?

0 Comments
2024/05/18
13:24 UTC

0

This may seem stupid, but on a suspension fork rebound dial, if you have to turn it clockwise, would that refer to looking down from the top, or up from the bottom of the fork

Would clockwise refer to if you were looking upwards from the ground, or downwards from the top? Just so I know which way to turn it

4 Comments
2024/05/18
13:07 UTC

1

Ultegra 6500 2x9 chainring replacement

I have an old 2x9 speed Ultegra 6500 road bike with 39 and 53 teeth chainrings (SG-B). Since they are no longer in production, the best option is to use Ultegra 6700 10 speed chainrings (SG-X), correct?

Does anyone know how long the Ultegra 6700 chainrings will still be produced? Should I buy them now before they are no longer available?

1 Comment
2024/05/18
13:04 UTC

1

Identifying bottom bracket tool (vitus nucleus MTB)

Hi all, I'm currently trying to fix my Vitus Nucleus VR 29 2022 (link to specs here: https://vitusbikes.com/products/vitus-nucleus-29-vr-mountain-bike-blue-2022 )

I'm having some issues with my crankset - when I pedal with moderate force the pedals creak (and drives me absolutely crackers). After a bit of googling it seems that tightening my bottom bracket would be a good place to start. Unfortunately, I've lost the tool that came with the bike :(.

I can't seem to find a replacement tool anywhere, so can anyone identify what tool I need to tighten up my bottom bracket? I've added an image below of what the bottom bracket tools like too :). Thanks in advance and sorry if my terminology is off, I've not worked on this part of my bike before.

Bottom bracket part in question (ignore the boot)

3 Comments
2024/05/18
12:25 UTC

1

HG+ 12sp chains hains on a Sram compatible chain ring?

I have spent ages building up my drive train only to discover the chin ring I bought is Sram compatible. Gutted

2 Comments
2024/05/18
11:43 UTC

1

Two Sets of Wheels for the Same Bike (Wet/Dry): Can It Work?

Hello everyone,

I recently had what I thought was a good idea to simplify swapping between winter and summer tires due to the variable weather in my area. I bought a new set of Mavic Ksyrium 30 wheels and fitted the original cassette (Shimano CS-HG800) and tires onto them.

On my old wheels (Fulcrum DB 900 OEM), I installed a new cassette (Shimano CS-HG500) and some Schwalbe G-One Allround tires.

Here's the issue: The gears shift perfectly on the old wheels, but they're misaligned on the new Mavic wheels. Specifically, the derailleur won't allow the chain to move onto the 34T cog, seemingly because of a limit screw issue. It looks like the derailleur is "shifted".

Does anyone know what could be causing this and how to fix it? Is there a way to make it work for both wheelsets without having to tune my derailleur every time I swap them (defeating the purpose of easy swap)?

Thanks for your help!

https://preview.redd.it/gw8amd9b861d1.jpg?width=4032&format=pjpg&auto=webp&s=79895dfee79d98324dc022d1a5e5ff7c7fa01a03

10 Comments
2024/05/18
11:27 UTC

1

Headset still loose after tightening

I have canyon strive cfr and I have loose headset bud if I tighten it it is still loose please help

2 Comments
2024/05/18
11:14 UTC

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