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19 votes
Accepted

How do I remove a severely stripped/rounded-off Allen/hex head bolt?

I can suggest three methods. The mounting clamp has a gap. You can use a thin saw to split the bolt there. It might scratch the clamp, but with careful action, the saw blade will not touch the ...
Grigory Rechistov's user avatar
15 votes

Should a 10 speed shifter only click 9 times?

Imagine you have only two cogs in the rear. You start on the smaller one. If you downshift once (down means larger cog, up means smaller one), you're now on the bigger cog. That was one click. You had ...
Weiwen Ng's user avatar
  • 32.9k
11 votes

Can I swap a gravel wheel with 1x10 cassette for a new road wheel with 1x12?

No, your derailleur/shifter is indexed for 10 speeds, not 12 (spacing between cogs is smaller in 12-speed cassettes).
Rеnаud's user avatar
  • 21k
10 votes

Is my shifter numbered backwards?

This is normal. This number is not here to indicate the size of the sprocket. This number is here to indicate how easy the gear will be. The lower the number, the easier the gear is. Indeed, the ...
loic's user avatar
  • 101
9 votes
Accepted

Is the mechanism that holds a bike to a specific gear in the lever that I use to change the gear or in the derailleur?

Yes, there is a pawl or similar mechanism in every indexed shifter that will not let the derailleur move once you have shifted. Whatever that mechanism is, it seems to have broken in your shifter. ...
Weiwen Ng's user avatar
  • 32.9k
7 votes

How do I remove a severely stripped/rounded-off Allen/hex head bolt?

Drilling out the bolt is probably difficult, because handlebars are not easily fixed to something rigid, and you have to drill freehand, in an unusual direction. At least, use some lubrication and a ...
Peter's user avatar
  • 71
7 votes
Accepted

Order of setting up new shifting system

The most logical order of operations when starting from nothing is: Install rear wheel and cassette Install RD and set the limits based on the pulley centerline to the appropriate positions on the ...
Nathan Knutson's user avatar
6 votes

How do I remove a severely stripped/rounded-off Allen/hex head bolt?

I've never done this myself, but I've seen videos of people using torx bits to remove the bolt. Use a hammer until it grips enough top turn the bolt. This could damage the torq nur could be just ...
bernhardrusch's user avatar
6 votes

Bent shift lever on Shimano Deore MTB shifter

I had exactly the same problem, bent it in a crash. I took it apart, used pliers, tried my own strength... nothing worked. Then I tried the metal pipe option mentioned here, and it worked like a charm....
Grant Davis's user avatar
5 votes

Bike cable tension not consistent when shifting up as compared to down

This is normally a divide and conquer problem, although on a cheap bike, it could be the sum of a number of small problems - if the latter, be prepared to have your patience tested. First instinct is ...
mattnz's user avatar
  • 51.3k
5 votes

Setting the Ritchey Venturemax handlebars in gravel

There's really not a right or wrong here. There's what's right for you. I had my bars and levers set up (what I thought was) the "orthodox" way, and when I saw a fitter, he rotated my bars ...
Adam Rice's user avatar
  • 30.1k
5 votes

Is the mechanism that holds a bike to a specific gear in the lever that I use to change the gear or in the derailleur?

Indeed, there is usually a mechanism in the shifter that holds a cable in position. That cable keeps the derailleur in the right gear. If this mechanism is broken, the cable slides back to the most ...
AJK's user avatar
  • 71
5 votes

Can I swap a gravel wheel with 1x10 cassette for a new road wheel with 1x12?

You have 10 speeds on your cassette, so any other wheel also requires 10 speeds, no more and no less will work. If you want to convert your existing setup to completely 12 speed then you'll need a new ...
Criggie's user avatar
  • 127k
4 votes
Accepted

Replacement options for 10-speed Tiagra 12-30 CS-4600 with RD-4601 derailleur

The Shimano 105 rear derailleur, RD-5701, would be compatible with your current drivetrain. It is a 10 speed derailleur with the typical actuation ratio found on all Shimano 7, 8, and 9 speed rear ...
Jeff's user avatar
  • 10.8k
4 votes

Want replacement shifter hoods - how do I find the model of my shifters?

If your shifters have the shift cables exposed and running across the front of the bike, as in the model you linked, then you have Ultegra 6600 shifters. If the shift cables are completely concealed ...
Weiwen Ng's user avatar
  • 32.9k
4 votes
Accepted

Shimano nexus 8 internal gear shift cable holder is broken. What can I do?

So, if it is a Nexus 8, the part number should be Shimano CJ-8S20. In case I am wrong, double-check the part number. It should be printed into the steel arm that the cable housing goes in to. It ...
ureris's user avatar
  • 66
4 votes

Installing Alfine shifter with nexus 8 hub

I have used the Alfine 8 rapid-fire type shifter with a Nexus 8 hub. It works much more positively than the twist grip shifter, no more jumping out of gear. The only downside is the gear display shows ...
Spokey's user avatar
  • 41
4 votes
Accepted

Chain repeatedly slips on rear cogs to next higher gear...and sometimes back and forth. What to adjust?

First and most importantly: Are you running a compatible cassette on the trainer? the Kickr comes with an 11-speed and that won't work with an 8-speed bike because the cog spacing is different, plus 8-...
DoNuT's user avatar
  • 4,496
4 votes

Flatbar shifters for 11-speed GRX groupsets

The other answer has already a specific product, but i wanted to answer in a more generic way for people with a similiar issue and maybe not the exact same product :) You can find official ...
Yalla T.'s user avatar
  • 230
4 votes

Front (left) shifter M9100 (12s) on 11s crankset? Any reason this would not work?

There's another shifter that is compatible I-spec EV that you didn't mention: the SL-M5100, meant to be used in 2x10 and 2x11 transmissions. For what it's worth, my fun bike is using a M5100 shifter ...
Rеnаud's user avatar
  • 21k
4 votes

Order of setting up new shifting system

I have stands that hold the bike's rear tyre just off the ground. It really helps with stability while faffing with gears. My order would be: Install tyre/tube and cassette on wheel, and put wheel ...
Criggie's user avatar
  • 127k
4 votes

Is my shifter numbered backwards?

The gear numbers for both front and rear shifter are indicative of distance per pedal turn, which in mechanical terms is measured in ratios. Similar to a car gear box, in which case the higher the ...
MindDBike's user avatar
  • 696
4 votes

Should a 10 speed shifter only click 9 times?

You have to be in a gear to start with, you don't start in zero gear, you start in one, now how many increases to get to ten? The first increase would bring you to 2nd gear; extrapolating to tenth ...
Cory's user avatar
  • 41
4 votes

i need help about gears?

It sounds like you have too little tension on the front deraileur cable. You can try to turn the barrel adjuster outwards, i.e counter clockwise half a turn to tighten the cable. Then check if ...
WornChain's user avatar
  • 2,066
3 votes

Flatbar shifters for 11-speed GRX groupsets

Shimano offers thumb shifters that are compatible with 11-speed road groupsets https://bike.shimano.com/en-US/product/component/105-5800/SL-RS700.html I haven't checked if there is a newer iteration ...
DoNuT's user avatar
  • 4,496
3 votes
Accepted

Setting the Ritchey Venturemax handlebars in gravel

There are no instructions because there is no single correct angle recommendation that will be correct for everyone. Obviously, the bars should generally have the shifters pointed forward, but beyond ...
Erik H's user avatar
  • 369
3 votes

Broken gear shifter case. Is it safe to use?

Without a picture, it is impossible to tell. Unfortunately, safety cannot be described in absolutes. A cracked component is likely less safe than one that is not cracked, but there is big gap between ...
mattnz's user avatar
  • 51.3k
3 votes
Accepted

Compatibility of Microshift BS-M10 10 speed friction shifter with 11 speed derailleur?

This is according Shimano derailleurs only for now and the values are estimated. MTB 10s pull ratio is 1.2 - which is most likely pull ratio of BS-M10 Microshift shifter. The total length of a pull ...
guyfromthesun's user avatar
3 votes
Accepted

Retromod: stuck with shifter replacement, which ones would work?

Your best option is to replace the integrated shifters with separate shifter and brake controls. If you're American or similar, the front brake will be on the left side so you need a left hydraulic ...
Criggie's user avatar
  • 127k
3 votes

Is Shimano GRX Di2 Bluetooth compatible?

It's possible, but with an optional module (EW-WU111) or a screen that has bluetooth connectivity. If your bike doesn't have it, you can install it afterwards. The following video explains how to do ...
Rеnаud's user avatar
  • 21k

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