Questions tagged [maintenance]

Tools, parts, techniques, and procedures to keep your bike in working order. MAINTENANCE is not the same as REPAIR, a separate tag. Maintenance is what one does on a regular basis. Repair is what one does only when something is broken.

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3answers
46 views

When basic maintenance for basic Suntour XCM/ XCC fork is needed?

When basic maintenance for very basic Suntour XCM/ XCC fork is needed? Is it needed just in case if something wrong or once a year or after some amount of km? By maintenance, I mean something like ...
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3answers
91 views

Left crank has become loose and no longer stays on the bike

The left crank kept falling off and I've kept on managing to put it back on but finally it wouldn't go. Think the threading is just absolutely kackered. So I ended up taking it to a shop to have a ...
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0answers
84 views

White graphite (hBN) a worthwhile chain lube?

Hexagonal boron nitride, a.k.a. white graphite, is non-toxic, very very slippery, tends to stick to metal, tends to not have other substances stick to it, and seems to have worked very well in my ...
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1answer
47 views

Which replacement pulley wheels fit a Shimano RD-6400/6401?

I'm looking for replacement pulley wheels for my RD-6401. It needs to have 10 teeth and a thickness of about 7.2mm. I do have a set of Shimano 10 teeth pulley wheels in front of me (Y56398030) which ...
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1answer
59 views

Stuck nut on bike axle?

I've got a bike. There is a stuck nut on the axle, and when I try twisting it.. well.. the axle turns too (obviously.). I'm trying to get it off, but it won't come off. My grandfather has a vast ...
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2answers
86 views

Keeping rim brakes centered

Nice to talk to you all again. I've been refurbishing a classic women's city bike for my girlfriend (vintage French - the bike not the girl ;) it's shaping up groovy. The primary problem I'm ...
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2answers
159 views

If the original lube that comes on new chains is so good, why don't we all just have a unified perfect chain lube?

See the following link to read about peoples opinions about new chain wax/lube (and when to remove it): New chain is pre-lubricated, should I clean it before use? Can we buy this chain wax/lube that ...
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1answer
53 views

DNM USD-6 fork service intervals and procedures

What are the good service intervals for the DNM USD-6 fork? How to understand that it should be maintained first? What are the recommended procedures for this?
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9answers
2k views

What would happen if I don’t replace worn drivetrain components?

What would happen if I took a entirely new drivetrain and just never replaced anything? Of course, I’d keep it clean and lubricated. With 11 and 12 speed chains being as expensive as they are, the old ...
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3answers
156 views

Major pitting in bearing cups; what can I replace?

I bought a "mystery meat" Peugeot bicycle, it turned out to be 1991 Peugeot "Milano" (couldn't find it in catalogs): 7-speed rear cassette, Shimano 200GS groupset. I disassembled ...
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2answers
727 views

How does lubricating your chain help protect your cassette and chainrings from wearing too?

I just got my mountain bike back from the shop after a frame warranty, and they replaced my chain as it was apparently worn (2x11). They recommended changing the cassette and chainrings while I was at ...
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1answer
60 views

Smallest sprocket doesn't fit on freehub?

I bought a second hand bike with a Campagnolo Super Record 11 groupset (the pre-2015 version). I have been experiencing shifting difficulty since I bought it, and took it to a mechanic. The mechanic ...
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2answers
141 views

What causes this tire “hair” wear

There are spots on my rear tire that have developed rubber hairs, almost like the edge of the tire is shredding and the structural integrity is starting to go. You can also notice in the pic a ...
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1answer
136 views

What does error code 30 signal on a Bafang electric unit?

A year or so back I bought an electric cargo bike online. The company I bought it from is since then no longer in operation. Since a few weeks every now and then the display shows a wrench symbol and ...
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2answers
133 views

When using a ptfe & paraffin waxed chain, does the casette require any lube?

I'm going to give chain waxing with PTFE and paraffin a shot as I'm sick of filthy dirty hands when I get a puncture. I've read quite about about the process of cleaning the chain and applying the wax ...
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1answer
75 views

Identifying bottom bracket type

Looking to buy an eccentric bottom bracket for adjusting the chain tension, however before ordering need to make sure it is compatible with my bb shell. There are following types of eccentric BB: ...
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2answers
87 views

Handlebar re-alignment

I have just bought a new bike. However it was delivered with the handlebars at 90 degrees to the front wheel. How do I align them? The bike is a Carrera Vengeance ebike.
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2answers
196 views

Why are cassettes replaced more often than front chainrings and derailleur jockey wheels?

On a bike there are three kinds sprockets that the chain comes into contact with: the chainrings, cassette, and derailleur jockey wheels. It seems that the standard practice is to replace the cassette ...
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1answer
55 views

How do I disassemble these AHF pedals?

I am trying to disassemble a set of pedals to service them but I can't figure out what tool to use on the nut (see photo). I just need them temporarily until I can cycle to the bike co-op to change ...
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4answers
2k views

What do I need to do to bring this bike back to life?

I've neglected this bike, a Marin Bridgeway, for the past 3-ish years. It's spent a significant part of that time sitting in the sun and (occasionally) rain. I want to fix it up again, but I have no ...
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2answers
138 views

Chain wear due to standing while pedaling

Does standing up while pedaling increase chain wear (lengthen chain) faster than pedaling while seated?
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0answers
40 views

Ribble CGR Ti - Replacement Gear Hanger

The gear hanger on my bike broke about 3 weeks ago. This is a sacrificial part, but Ribble are out of stock and seem to have no idea when this critical part will be in stock again. I have looked on ...
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2answers
76 views

Resources for bicycle compatibility

I'm looking to build my own bicycle. The main thing I care about is compatibility. I've been researching around and have found various gold nuggets along the way: YouTube - How To Build A Bike From ...
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1answer
68 views

What would cause a pedal to loosen from its spindle while riding?

I recently serviced an old pair of Wellgo platform pedals. They were already old and well-used by the time I got them, and they were slightly too loose, but useable. I rode on them for a few months ...
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2answers
101 views

Which brake pads for these old cantilever brakes?

I need to replace all the brake pads on these old Mafac cantilever brakes on my bike. I have currently a mix of the original style and a modern replacement. I went to a local bike shop and they gave ...
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2answers
85 views

Campagnolo Super Record H Screw

I am having trouble adjusting the shifting on my Campagnolo Super Record rear derailleur. I have set the high and low limit. I think the main problem now is that the jockey wheels are too far away ...
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0answers
57 views

What and where is the weeping port on Shimano MTB brake levers?

I understand that when you overfill some models of Shimano hydraulic brakes with oil, the excess will flow out of a one-way valve called weeping port, but cannot find any technical documents, pictures ...
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2answers
256 views

Quick link won't 'click'

I'm brand new to bicycle maintenance/repair and just replaced my chain for the first time which I'm very excited about. I do, however, have a problem. I used a quick link to attach the chain and I ...
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2answers
80 views

How do I figure out what the model number is of my Shimano rear derailleur?

Here are pictures of my current derailleur I need to replace.
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0answers
58 views

Hydraulic disc brake - lever slowly touches bar

I have a magura disc brake. When I pull the lever and keep applying constant pressure to it, it slowly retracts all the way to touch the bar. This process takes about 10 / 15 seconds. I have tried to ...
3
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1answer
53 views

Fulcrum Racing 5 LG freehub replacement - drag

I just replaced a Fulcrum racing 5 LG free hub. Once it was all together, it seems a bit tight. With the bike on the stand, when I spin the pedals, and release, the pedals continue to rotate. So the ...
4
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2answers
175 views

Movement in head tube/fork?

I have a BH road bike and it has some movement with the tube that connects to the fork. I took it to a bike shop for a tuneup. When I picked it up the guy mentioned the issue. He said he tightened ...
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0answers
65 views

Rear wheel keeps ending up squint, axel on cassette side lateral movement?

I have an old(?) 2010 Carrera Vulcan MTB and the rear derailleur hanger broke a few months ago (my son accidentally bashed it with his bike). Even though the bike is old, it has not really seen much ...
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4answers
2k views

At what point should you stop repairs and get a new bike instead?

My bike has passed its prime, one by one parts start to break, and replacing them keeps eating more and more money. Which made me wondering, is there any rule of thumb of when it is more economical to ...
4
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1answer
122 views

Removing an internal headset before pulling the fork?

I'm completely taking apart a 2014 Kona UTE (for fun, and to clean it, but nothing wrong with it). I'm not sure how to proceed with the fork. It is now "bare" (no wheel, no cable, no handle, ...
3
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1answer
52 views

Reinforced pin replacement with a missing/quick link

Usually, when breaking a bike with Shimano reinforced pin, the general recommendation is that you find the reinforced connecting pin but then move to another pin, a few links aways. It is the "...
2
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1answer
264 views

Carbon taperd road fork - use crown race or not?

I have a 2016 Trek Emonda ALR 5 with a carbon fork. I am assembling the bike after general maintenance, and have noticed that I am missing (or: think I'm missing = am not sure) a crown race for the ...
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0answers
10 views

How to replace lever adjustment knob on guide r brakes

I broke the lever pull adjustment knob on my guide r brakes is there a way to replace this knob? Or any hacks that can be done to put it to maximum reach?
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1answer
72 views

Is my wheel broken?

The other day my inner tube suffered a blow out and I'm wondering if this is the cause One side of the joint in the wheel seems to have come out of alignment and now there is a sharp bit sticking out....
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6answers
921 views

Yes/no replace chainrings+cassette after chain failure?

I had a pretty bad chain failure a couple of days ago. I bought the bike second hand about a year ago, and in all fairness I had not done much maintenance on it since. I discussed with a friend and ...
3
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3answers
295 views

WD40 for crank arm

There is visible rust where my left crank arm meets the bottom bracket which I believe is the cause of the creaking (only present when pedalling hard on left side). Is it okay to spray WD40 in there ...
3
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1answer
54 views

Direction of saddle clamps on seatpost

I have a seatpost from a Canyon Dndurace AL 7.0 from 2016. The seatpost has a saddle clamp consisting of two parts. The lower part has one long end and a shorter one. I can rotate both parts of the ...
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1answer
59 views

Installing flat pedals (with pins) on a MTB for rainy/wintry conditions?

I have some RaceFace Chester pedals that I want to install on my beater MTB, but I'm not sure if it's a good idea. Basically, I have two bikes and I want to use one for the "bad" weather conditions (...
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1answer
190 views

What is air pressure on Marzocchi forks?

I have changed oil in a set of Marzocchi Drop Off forks with 110mm travel. I can’t find the recommended air pressure on Marzocchi website. There is a spring on one side. I think they are 2004 but not ...
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4answers
104 views

Where is the valve in my handpump - and what stopped it working?

I have quite an old handpump that fits on my frame. It looks like it's called TOPEAK "miniDUALG - optimised for MTB/ROAD." It has a pressure guage and various bits that screw the handle to the body ...
4
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0answers
137 views

Hole cover under bottom bracket: what is it and how do i screw it back in?

So I got curios what is behind this cover and had a look. Turned the bike upside-down, unscrewed it and took it off. When trying to screw it back in, I realized that there is nowhere for the screw to ...
2
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2answers
336 views

What can I use to replace a Shimano Deore LX RD-M581?

I've got a trusty Marin East Peak XC from 2008, but the rear derailleur's adjustment screws have all sheared and I need to replace it. The derailleur is a Shimano Deore LX RD-M581, but I can't find ...
3
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2answers
255 views

Crank removal tool broke. Before I buy another, what did I do wrong?

In my (first) attempt to remove the crank arms from a bike, I broke the crank puller (Super B TB-6485). I applied more force than I was comfortable with, thinking the threads had perhaps rusted over ...
1
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0answers
28 views

Are Tacx turbo trainer frames the same across models?

All of Tacx' wheel-on turbo trainers look like they have the same frames (looking at current rather than older models). Can anyone tell me whether it's possible to upgrade from say a Flow to a Vortex, ...
3
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1answer
97 views

What do I do with this during SR suntour lower leg service?

I'm trying to do a lower leg service on my fork: SR Suntour Epixon 29er https://www.amazon.co.uk/gp/product/B014UQDX9Y/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 I've removed the rebound ...

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