10

Judging from your videos, it appears that the chainrings and crank are no longer connected. It appears that you have something called a one-piece crankset. If you are confident that you can learn how to disassemble it, I’d say you’re up for the repair. Once you have the crank off the bike, you’ll be able to see how the chainrings and crank arm are connected. ...


6

While we don't have your bike in hand, or at least a video of the issue, it sounds more like your freewheel or your freehub has failed. I suspect that new cyclists might say the gears have failed. Edit: This answer actually mis-diagnosed the problem (albeit I'd argue for good reason - it was given before videos were provided!). I'm leaving it up for general ...


4

This question about loose crank arms has been asked and answered several times before on this site, but yours is the worst I've ever seen I think. Unfortunately your crank arm is ruined. If the alloy crank gets loose and is ridden on the hard steel spindle wallows out the relatively soft alloy. It does not matter how tight the retaining bolt is done up the ...


3

If you're just riding casually, then a simple chainring replacement is probably all you need. You don't have to match the styling, just the Bolthole Circle Diameter (BCD) and number of boltholes. It looks like a 4 bolt pattern, but there are a number of standard sizes (naturally) Personally I use a 100% printout of the PDF at https://cdn.shopify.com/s/...


2

I replaced the BB on this crankset recently. I have a spreadsheet here with all Shimano 9/10/11 speed cranksets & BBs https://docs.google.com/spreadsheets/d/1HdcNgmQKFA-lAqQJ3lXQ8SwA4tblAKiOXe9XYJJHYN8/edit The M523 is the only crankset with these chainrings and bottom bracket. However, the M522 is almost identical with 42/32/24 chainrings & no need ...


2

Spindle length and chainline are immaterial to it being Italian. The center of the spindle is at the center of the shell either way. If the chainline is good now and you're using all the same parts, get another JIS BB of the same spindle length in Italian. If you wanted to tweak the chainline, it's the same process as any square taper crank. Use your ...


2

I would recommend you to replace not only the chainrings and crankset, but also the bottom bracket. Octalink is getting rare because it is a big honking design flaw. There are not one but two flaws in it. The first flaw is that it lacks press fit, so the left crank is free to rotate in its splines minutely forwards and backwards. If you rest your weight by ...


1

Can a set of Stronglight JIS track crank arms (107mm axle length) be fitted to my BB (110mm spindle length), or must the axle length of a crank arm match the spindle length of the bottom bracket? Possibly. If both the bottom bracket and the cranks are JIS, the difference is only 3 millimeters. It will move the cranks 1.5 millimeters outwards. Thus, because ...


1

Axle length and spindle length are the same thing. Three-piece cranks typically specify a required axle/spindle length to achieve a specific chain line, I.e. how far away the chain rings are from the center plane of the frame. An axle/spindle longer or shorter by x millimeters will move the cranks x/2 millimeters outboard or inboard respectively. Some ...


1

Your bottom bracket is screwed into the eccentric. You'll be replacing the bottom bracket. The fact that it's in an eccentric doesn't affect the part choice. The eccentric is more like part of the frame. To install FC-S501 you need any Shimano road Hollowtech 2 BB, as indicated by BB-SM4600 being the model called out in the Shimano exploded view diagram for ...


1

Per https://www.ribblecycles.co.uk/ribble-endurance-sl-r-series-frameset/ Bottom Bracket: Press Fit BB86. A Shimano BBR60 is threaded: SM-BBR60 SHIMANO ULTEGRA - Bottom Bracket - Threaded - HOLLOWTECH II - 68/70 mm shell width So no, the BBR60 won't fit. Something like a Wheels Manufacturing BB86/92 would fit, though. And it won't start making noises ...


1

When I turn my cranks with no chain attached, it's pretty smooth, no real noise and just goes for a while if I let it spin. This does not look like a bad bottom bracket. When I attach the chain I can turn about half a rotation freely and then it becomes stiff and seems to be in the same place each turn. However, chain and other attached stuff creates a ...


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