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Questions tagged [parts]

Bicycle components without which it's not a working bike: wheels, brakes, saddle/seat, bottom bracket, derailleur, stem, handlebars, bolts, etc. Also tag with specific part.

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6
votes
1answer
198 views

How to identify counterfeit Shimano parts?

I bought a pair of Shimano brifters from eBay, brand new. They have a few bumps and marks on the plastic and metal parts that look like poor quality manufacturing to me. Can anyone tell from these ...
6
votes
6answers
2k views

Can a new chain significantly improve the riding experience? If yes - what else can?

I am a casual commuter (in average 2 days per week, 30 km per day), on a generic bike which I bought a few years ago. Yesterday I took the opportunity of having the bike reviewed and the chain and ...
1
vote
2answers
101 views

What are these parts and how to remove them without a tool

Are the two being symmetrical part circled in blue the following picture DU bushings ? How could I remove them without the appropriate tool ?
2
votes
1answer
64 views

Brompton Rear Brake Caliper Assembly Schematic

What is the list and order of components that thread onto the Brompton's rear brake assembly from the brake caliper through to the Lower Stop Disc for an M6R? At some point on a recent ride down ...
1
vote
0answers
66 views

What are the axle nut sizes on the brompton?

What are the exact specifications of the nuts used on the various axles of the Brompton bicycle? Specifically, I have a 2016 M6R black, but I would appreciate it if you listed the specifications for ...
3
votes
2answers
126 views

How to find a replacement and replace a broken kickstand?

My bike came with a kickstand, but today after a ride I noticed part of it had fallen off somewhere, as shown in the picture below: It used to look like this: As I don't have the part of kickstand ...
20
votes
1answer
4k views

Random piece of plastic

I have recently purchased a hybrid bike with suspension (not sure if that is relevant to this question). It came with two pieces of plastic. Any ideas what they may be for?
2
votes
1answer
134 views

How do I choose a replacement wheel rim?

These are my current rims: Wheeltech TD26 by Alex Rims (can't find much info about these online). I need to replace the rear wheel as it is cracked (cracks on the rims around a few spokes) It's a ...
2
votes
1answer
339 views

Any compatible trigger shifters for el-cheapo TD ONE derailleur?

Bought a cheap RoadMaster MTB's as a first "grown up" bikes for my daughter. For the price (~$60 in a sale) they play nicely, but it shows the poor quality of the components. The biggest gripe is the ...
1
vote
1answer
76 views

Can't tighten thru-axle

Long story short, my cone nut came off while riding. Can I put it back without dismantling my freehub? And why I can't tighten my axle anymore? Only way I can tighten axle is without wheel. As soon I ...
3
votes
3answers
417 views

Replacement stem cap and bolt

Our oldest son has been alternating between mine and my wife’s bike (Carreras from Halfords) whenever he has to go anywhere, but over the last week or so we noticed he had stopped using my bike, ...
6
votes
3answers
2k views

How to improve/restore vintage Peugeot bike, or is it even worth it?

I've got an old Peugeot bike I've been riding, and I like it but I'd like to make it better for long rides. I'd like to replace some parts, the steel rims aren't good for braking and I'd like ...
0
votes
0answers
96 views

What are my options - TA to QR conversion

I’ve just bought these wheels on gumtree and didn’t realise they were thru axle as I require quick release for my cx bike (BH RX team cross 2014 https://issuu.com/bhbikesusa/docs/bh_bikes_2014-...
0
votes
2answers
120 views

Rusty brake nuts & cables: Should I change my brakes or not?

I have been using a used bike for a few months now and when I bought it it was in mint conditions. However, the winter has been really harsh were I live and since I drove every day to work with it ...
2
votes
1answer
281 views

Is there a front derailer type that can be mounted on a frame without braze on or fitting on the seat tube, or clamping?

As the question says, is there a front derailer type that can be mounted without having a fitting or braze on on the seat tube, or without clamping to the seat tube (because it's a weird shape, or ...
3
votes
1answer
363 views

Are road bike shifter hoods compatible across models?

I've been using Shimano Sora Shifters since about 2012 .. probably one generation before the current (https://bike.shimano.com/en-EU/product/component/sora-3500/ST-3500.html) The rubber covers are ...
4
votes
1answer
145 views

What is this part of a bicycle trailer called, and where can I find a replacement?

I have a Schwinn double bicycle trailer for my kids, but it is broken. The black plastic part pictured fits at the base of the right wall and connects it to the trailer frame. A bolt goes through the ...
1
vote
1answer
141 views

Finding compatible fixed-gear cog and lockring

I have a flip-flop hub that came stock on a Trek single-speed. I'd like to install a fixed-gear cog and lockring opposite the existing freewheel. How can I determine which cogs and lockrings are ...
2
votes
0answers
126 views

5 arm cranksets versus 4. Which is better and why?

I'm looking to buy a Sora triple crankset. Shimano make two types one has 5 arms and the other only has 4 arms. Which should I get and why would that be a better choice? I'm a slow-ish rider. I'm 50 ...
1
vote
2answers
54 views

Can a cyclometer be used with any bicycle?

I just want to know if a cyclometer can be used on any cycle or just on those made for racing or touring. Thanks for your answer in advance.
0
votes
0answers
568 views

Where to get replacement bike frame cable entry grommets?

Does anybody know where to get more of these ? These hold shift and/or brake cable ferrules where the cables enter the frame. Here is what they look on a bike if that helps: These specifically are ...
3
votes
1answer
251 views

Ordering correct spoke nipple size

I've got some spoke nipples on a rear wheel which are stripped, and I'd like to replace them. I've measured the thickness of the spokes and they have a diameter of 2mm, which correspond to 14-gauge ...
0
votes
4answers
454 views

What should be my first upgrade?

I've been planning to upgrade my Foxter Evans 3.0 (Low budget Bike) to lessen it's weight. What should I replace to lessen it? Also I'm a 5'11 person and my frame is a medium. Should I consider ...
0
votes
1answer
161 views

What is an equivalent or compatible chainring for this Deore XT “24-AM” chainring?

I have a 2012 Mountain Bike with Deore XT. While troubleshooting chain suck on my inner chainring, I figured I'd order a new chainring and replace it. The chainring only has "24-AM" on it. However, ...
7
votes
2answers
2k views

Can a Shimano XT (mountain) hydraulic disc brake caliper be used with an Ultegra STI road brake lever?

Specifically, is the XT BR-M8020 mountain caliper compatible with an Ultegra hydraulic road brifter like like the ST-R8020 or ST-R8070? I have confirmed that they both use BH90 brake hose ("high ...
3
votes
2answers
307 views

What type of rear derailleur is used on my bike?

Direct mount or hanger mount? Sooo, one glance at these photos will tell you why I'm asking this... Needles to say, I need a new one and I'd like to know what I should be looking for. It's for a 21-...
0
votes
3answers
193 views

I'm looking for a part that connects the saddle to the body frame of the bicycle

I recently removed the saddle because it was squeaking a lot, then I cleaned the inside and put oil back in, however I couldn't re-attach the bar under the seat to the body frame, then I used this ...
3
votes
1answer
125 views

What is this crank part called?

I recently had a Shun SS-8001 crankset fail. When taking it apart, I saw that the right pedal has a sort of stop ring that prevents the pedal, presumably, from unscrewing itself: Now I need to find a ...
2
votes
1answer
231 views

How do I figure out what crankset replacement will fit my derailleur?

I have a bike with a Shimano FC-M560 crankset in the front which I want to replace. I naively bought a Shimano FC-TY301 crankset, thinking that there's norms and that 3-speed cranksets are more or ...
3
votes
1answer
136 views

How can I un-seize track nuts?

I bought a set of these about 18 months ago now and for a little while they continued to work as they should but then now they're seized up. Is there anything (short of ordering another pair) I can ...
1
vote
1answer
37 views

Is it possible to replace this quick release part on a Motiv Rockpoint?

My son has been using this bike, and the other day he came home with a bolt that had come off. I checked it out, and it looks like there's also another part missing—the other end of the quick wheel ...
4
votes
1answer
640 views

Repairing Shimano front shifter ST-EF41-L

My son's bicycle gear shifter SHIMANO ST-EF41-L (front 3 speed) malfunctioned (Both levers became free). I disassembled it and found 3 very small plastic parts on the bottom side of the shifter were ...
2
votes
0answers
94 views

what is this piece of plastic? [duplicate]

Preparing to move, I found this together with the papers I got when I bought my bike. But what is it? Is it important? It is about 2cm long. I have four of these... Maybe related to the disk brakes? ...
0
votes
1answer
207 views

How can I fit this bottle holder to this bike?

I want to fit this bottle holder on my bike but the attachment seems too thin for the frame tubes. I believe this is a universal bottle holder and my bike isn’t of unusual size or tube girth. Am I ...
1
vote
1answer
265 views

Should I get a smaller chainring or bigger cog?

I built a single speed bike about a year ago, and am starting to change out parts to make it more comfortable for me. The first thing I'm wanting to change is the gear inches, which I didn't give much ...
0
votes
1answer
86 views

How to date my second hand bike [duplicate]

I am trying to get an online reference to the exact specs of my second hand bike. What are a) Some good techniques/things to look for? b) Some resources to help the dating process. E.g I see that ...
0
votes
3answers
597 views

Correct clamped quick release lever direction

Which direction is the correct way for the QR lever to point when closed and why? I have found both upwards and backwards on different parts on the SRAM website even for the same forks. I have ...
2
votes
3answers
365 views

New 2012's Sora 3500 vs used 2003's 105 5501

I am preparing my bike for a 2000 km trip. I have an old and used ~2003 hybrid bike with 105 derailleurs and want to change the current horizontal handlebars to road ones, so I have to change cables ...
3
votes
1answer
125 views

Electric road bike - Compatibility questions

I am building an ebike on a road frame. I am using a Bafang G310 rear hub motor & 8 Speed Shimano cassette. I plan to use a long MTB rear 8 spd derailleur (either Acera or Alivio). For my crankset ...
3
votes
1answer
224 views

Missing mtb bottom bracket cable guide screw?

2016 Diamondback Haanjo Comp I was giving the bike a bit of a wipedown today and noticed a missing screw on the bottom. I've been unable to find any specifications such as this from DB. Can I ...
2
votes
2answers
749 views

What shifters are compatible with the 8 speed cassette and Deore derailleur on my Trek 6500 ZX?

The top half of my right shifter fell off on a trail the other day, so I need to replace it, but I'm not sure what my options are. The bike is a 1997 model Trek 6500 ZX with an 8-gear rear cassette ...
3
votes
1answer
159 views

How to find a model number that replaced an old Shimano part

Is there some listing of Shimano component model numbers that can help me find a currently-manufactured part that is equivalent to an old model number that is no longer being manufactured? In ...
4
votes
1answer
52 views

Need help identifying Industry Nine part

I recently picked up a box-lot of Industry Nine parts, including the items pictured. They are 92mm wide, and of varying diameters. Could someone please tell me what they are, and what they are used ...
2
votes
2answers
3k views

Determine which cage length on Shimano Ultegra 6800

How can I determine which cage length is on my road bike? I have a Shimano Ultegra 6800 groupset, with 11-28 casette and 52-36 chainrings. I found this resource, however, I measure 60 mm between the ...
0
votes
0answers
96 views

Carrera Virtuoso Road Pro 2008 Tyre identification

I don't suppose anyone knows the make and model of this tyre? These allegedly came as OEM on all Carrera Virtuoso Road Pro circa 2008, the Black and Blue Road Pro model. This has been bugging me as I ...
2
votes
2answers
121 views

Can anyone help me identify this stem binder nut

This nut (pictured) fits the binder bolt from a vintage 3ttt stem. I would like to know the name of this nut, or the type of nut this is so that I can try to buy more. So far, I've found similar ...
0
votes
2answers
188 views

How much of a mark-up do you pay building your own?

So, I have read the pros and cons question, and the why it is more expensive question, but I didn't notice anything on how much more expensive it would be. So, if I want to buy a high-end bike a ...
1
vote
1answer
449 views

Track cog threading or lockring threading?

On the website of a wheel manifacturer, I can find the following specs about the cog compatibility of their track wheels: Our track hubs are then compatible with threaded track cogs of Shimano 1....
3
votes
2answers
194 views

Correct spring for 2018 RockShox XC30

I just got a new Cannondale Trail a few weeks ago (March 2018) and it came with RockShox XC30 100mm travel 29" wheel front fork. I'm heavier than the average rider so I need the XFirm spring for it. ...
1
vote
2answers
121 views

Quality saddle and seat post

I own Scott Voltage YZ 25 for around 10 years. I've been using it daily (city ride mostly). Around 6 years ago, my original saddle, and seat-post were stolen, therefore I had them replaced, but not ...