1. R

    8 Speed Chain Rings

    After having my "hand slapped" about the state of my chain rings in the "bike maintenance section" I thought I would get some new ones. This is turning out to be quite a task. Currently have a 52-42-30 set up with 130 BCD. However I can find none that are specific 8 speed, would using ones...
  2. robgul

    Chain fallen off?

    I was amazed to see this - a) because it begs the question of why the chain falls off a well-maintained bike, and b) what fingers can't achieve either with a bit of plastic bag as protection, or a plastic glove freely available from...
  3. R

    Choice of derailleur ?

    I'm building a Frankenstein bike out of salvaged spare parts , its going to be a 1x , 22" Coyote hardtail MTB frame,rigid forks, minimal gears, an mtb touring hybrid kind of thing built for comfort and load carrying with panniers. I've rummaged in my pile of bits and come up with these Shimano...
  4. silva

    Accelerated chain wear

    What would have the biggest impact on a chains life, worn off particles from the chain itself or foreign (sprockets and road and air dust) particles? A chain is steel, a sprocket is (mostly) aluminium. Worn off particles usually corrode. So oxides of these. Which oxide is hardest (and thus...
  5. ozboz

    measuring chain wear

    Hiya, i bought a vernier calliper a few weeks ago, so I am after using it to measure for chain wear, anybody know the specific readings I should look at for good to worn and over , metric or imperial over how many links, Cheers
  6. I like Skol

    Which chain splitting tool?

    My trusty old (and very cheap) chain tool of 25-30yrs service has finally failed. It has travelled many thousands of miles in its role as my emergency roadside repair tool as well as being my workshop chain chopper. Currently looking at two possible replacements. As these are from reputable...
  7. Yellow Saddle

    Why a worn cassette cannot damage a new chain

    In the light of constant misrepresentation of the effects of a worn cassette on a new chain, I thought I'd explain why a new chain cannot be damaged by a worn cassette. We've seen this stated here as gospel often, and again, this week. Firstly, we need to understand why a chain wears and what...
  8. Shearwater Missile

    Slipping after chain replacement

    I replaced the chain on my 9 speed Sora after 2500 miles and get the occasional slip on the middle sprocket, by that I mean about half a dozen times in 24 miles. It is not always under load conditions. It did not do it before the chain change and was changed because of wear and no other...
  9. Globalti

    Removing a fixie cog without a chain whip - good trick!

    I've just come across this wheeze for removing a fixie cog without using a chainwhip. Obviously the BB would need protecting unless you didn't care about the paint. View:
  10. stuarttunstall

    Brown substance on chain

    Hi I have a silly question if anyone can help.. I have just been out to check the bike over ready for a little ride Sunday, I have not used it for about 3 weeks due to the weather … I keep the chain well lubed with dry lube as I use it in the dry.. Now looking at it looks like the chain is...
  11. roundisland

    Help PLEASE. Chain to short.

    Just been to Halfords to pick up a new chain. Tried to fit it and it appears way to short. It’s an 11 speed chain which I’m trying to fit to my ebike. I have a 11 - 48t cassette with a single front chain ring of 46t. If I run the chain around the largest gear on the back and the chain ring the...
  12. onb

    Campag Veloce Chain ring and front mech 10 speed

    Campag triple chain ring 170 crankset 50/42/30 the left hand crank is centaur and slightly different colour due to an unfortunate incident with a crank puller £25.00 posted...
  13. EltonFrog

    Floppy Chain, what am I doing wrong.

    Just installed a new chain, but I’m sure it shouldn’t be flopping about in the smallest rings. What have I done wrong. thanks
  14. Slioch

    Unusual (for me) chain failure

    Was doing some routine maintenance today with the bike up on the stand. Whilst slowly turning the cranks to check for any problems there was a slight "thunk" each rotation. Closer inspection showed this :eek: Not sure how long this has been going on for, so I guess I'm lucky that the chain...
  15. Banjo

    Chain wear checker for a Brommie.

    Does anyone know what type chain checker I should use on a Brompton ML6. ? Also any special maintenance I should do.I am giving mine a pre winter clean lube and look over.
  16. steve30

    New Chainrings... and now the chain gets stuck

    My 8 year old Shimano Sora chainrings were getting a bit knackered, so I decided to get new ones. With the intention of saving effort (yeah right), I went to a local bike shop. He got me some new chainrings and fitted them, along with a new chain and cassette. The chainrings are Stronglight...
  17. grellboy

    Re-using a chain pin/rivet

    Just removed chain to clean it. Upon Googling, it seems that it is frowned upon to re-use the chain pin you have pushed part way out. Instead it seems consensus is to remove the pin entirely and replace with a new one. I'm sure I've reused a pin before without any major consequences. Any...
  18. jamin100

    52/36 to 53/39 huge difference & chain length

    I’ve just brought a new chainset and realised I’ve brought a 53/39 whereas my bike currently has a 52/36 My cassette is 11-32 and.m not changing.. I’m ok on the hills and only use the 36/32 on the real steep stuff or when I’m dead on the way back after a club run a hit a hill.. Is there much...
  19. M

    How many miles before changing chain and Cassette?

    I did about 700 miles on a chain and found it needed replacing. The guy at Halfords told me that the cassette would need replacing on the 3rd chain change. So does this mean the cassette would need changing every 2100 miles? I'm also curious as to why my chain is wearing out at 700 miles on my...
  20. cyberknight

    chain catchers

    I know i know i can search :) Anyone have experiences with dog fangs ? Looking at a chain catcher but looking at these over ones that involve undoing the front mech ( braze on) for simplicity , chain has only dropped twice in over 2 years and both in high torque situations so i was...
  21. JuliaT

    Snapped Chain requires new cassette?

    Hi all, During my commute this morning my chain snapped. I took the bike to the shop as I had no tools or knowledge on how to replace it (specially in the middle of the street and having a meeting in the morning). The guy in the bike shop told me that, as I through away the snapped chain he...
  22. Porcia

    Chain wheel replacement

    SO I am looking to change the front chain wheels from 53/ 43 to 50 /38 as I is getting long in the tooth and hills a getting harder to climb. Every thing starts out fine measure the PCB or BCD 130mm not a problem but the strange flat headed Allen bolts holding the ring's to the crank are what...
  23. beatlejuice

    Is my chain ring knackered?

    I have a bike fitted with an Shimano 8 Afline hub gears. I need to replace the chain however I am not sure if the rear sprocket needs replacing. What is the considered opinion? BTW I swopped the original 20 toothed for with one with 2 extras. I live on nasty steep hill! Thanks.
  24. RoadRider400

    Chain falling off hub bike

    I have owned a hub bike for about 3 years and it was second hand when I got it. What is the usual reason for a chain that comes off every 15 miles or so? Luckily my commute is 2 miles so its not that annoying, but I would like to fix if its easy.
  25. S

    Chain Length Calculater

    As each year passes the hills get a little harder so I am looking at changing my 11-30 to a 11-34. I have the large cage so hopefully shouldn't be a problem. Is there a rule of thumb as to how many more links should the chain be longer in relation to upsizing the cassette or is it just...
  26. K

    new chain

    Hi when fitting a new chain should i just use it straight from the box with the grease it came with.Or should i de-grease it and you the oil of my choice ?
  27. Phaeton

    Snapped Chain

    Never had one snap before, 1800 miles poor maintenance, so not interested in a repair new one to go on, but how do I know which one I need, it's a Cube MTB, 3 up front & 10 at the back, is there a poor/med/best brand?
  28. byegad

    Shimano 10 speed triple with 9 speed chain??

    OK, so my 2011 trike needs a new chainset. It's a 27 speed recumbent currently with the SRAM version of Hollowtech BB and I'll swap it to Shimano bearings [the GXP bearings need replacing anyway and my other trike uses Shimano Hollowtech] and finding a suitable touring style 9 speed triple is...
  29. Llankey43

    Snapped Chain

    Whilst on a ride today my chain snapped. On closer inspection two outer link plated had bent slightly. Can this be repaired just by reconnecting with a chain link tool or do I need a new chain???
  30. Sharky

    Chain "Snapped"

    Out at the weekend and the chain started skipping on the rear cassette when I put any significant pressure down. A few miles later, going up a hill - "snap" and the chain broke into three parts. I know chains don't snap. What happened was that one of the links, that I had previously joined...
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