Hot answers tagged

27

All the elite riders I have encountered just know. I think its part of the attention to detail necessary at that level. You almost never see them looking down to check (that would be showing a weakness and giving oponents an opportunity). But if you mean can the rider say which cog they are using at the front and rear? then the answer is that often we can'...


22

On or off road, but especially off road, it is desirable to be able to shift down more than one gear at a time to deal with abrupt changes in gradient and avoid being stuck in too a high a gear and stalling out. Also (as you mentioned) if you are required to slow down or stop suddenly, it's convenient to be able to drop down several gears while ...


21

Cadence mostly. The answer to your question is in the title. Experience. Same way motocross riders know what gear they are in. The speed of the engine vs how fast they are moving.


16

You can normally use chains from other legitimate vendors, be it SRAM or KMC or something else. You do not need to use Shimano™® chains only. But no-one can tell you whether your chain is of sufficient quality. Only you can inspect it, measure it and try it. We cannot do that. I am not even 100% convinced it is actually a fake chain, but I will just take is ...


15

Providing the 7900 is the same, I’m sure it is but someone more qualified can chip in if it’s different. How did it fall out ? Shimano have a proper tool for removing them. Info from here Fawkes


13

Sadly, all I have is bad news. It's not a quality control issue. It may not have felt like much of a crash but that lever was hit hard. There is no way to fix it. The plastic shell is part of the structure of the lever, not just a cover. It also provides a human / machine interface with a particular shape and feel. If you glue it back together it won't be ...


13

The main problem is quality, in terms of dimensions and variance. If you think its an 11 speed chain but someone has just repackaged some 10 speed chain, then there will be issues. Likewise, if it were the right chain but didn't pass Quality Control and was rejected because it didn't match the required dimensions, then it could fail quicker, or accelerate ...


12

The new Claris, called R2000, has internally routed brake and shifter cables, an improvement on a previous version, that still sported the externally routed shifting cables. It is still 8 speed group, so in line with the op's wishes. https://bike.shimano.com/en-EU/product/component/claris-r2000.html dealers manual, page 13, how to install shifter cable: ...


12

Depending on the year of your Giant Escape 3, it either has Shimano EF40 or EF41 shifters. Both shifters have the same User Manual which has this information on downshifting: Assuming you are talking about your rear derailleur (right shifter), to shift 1 position you need to push the lever a small amount. Pushing the lever more will cause it to shift 2 ...


12

Cycling gloves are designed for comfort and to improve grip by absorbing sweat and providing a contact material that provides grip even when damp or wet. Typically, hands do not sweat much so most cycling gloves will help in this regards.


11

20,000km's in 2 years on Ultegra Di2. It performs very well. Shifts are smooth, crisp, quick and effortless. I have a few other road bikes running various mechanical shifters, but have preferred the electronic shifters during the past two years. No need for adjustment due to no more cable stretch. The front derailleur auto trims and follows the rear ...


11

In the context of a high-end MTB designed to go quickly over difficult terrain, trigger shifters have the following advantages: They can be operated using only the thumb, without changing the grip, so the index finger is always ready to brake. Getting mud on the gloves does not impair operation. Modern grip shifters do exist, Sram makes a wide range of ...


11

The cable turns a double right angle in quite a small space. It's a very common failure on all the 11speed shifters from 9000/6800 onwards. The "solution" is to change the right hand cable at a regular service interval, perhaps 2/3rds of the mileage you did with the current cable. One benefit of the new design is that it is considerably quicker and ...


10

No, it's set up the right way. (In fact, because of the way the front and rear gear systems work, it's essentially impossible to set them up backwards: you'd have to re-engineer the whole system.) Think about it in terms of how many times the wheels turn for each turn of the pedals. When you change to a larger-sized cog at the front, the chain moves ...


10

As per AndyP’s comment, I have also heard anecdotally that these styles of shifters can be stiff for children’s hands, but then again some thumb push trigger shifters can feel quite stiff to my adult thumbs. As you mention it is most difficult for your daughter to access first gear, I would investigate or have the shop check the Lower Limit screw on the ...


10

It's a hack, but you can do this with the current Claris ST-2400 3x8 levers using an alternate cable mounting position on many "classic" shaped Shimano rear derailleurs. (Make sure whatever you're buying says 3x8.) Sheldon Brown goes into this briefly here. It tends to work fine in this combination (8-speed shifters on 7-speed.) Note that all shift-...


10

You have two shifters. A friction shifter for the front derailer and a 6-speed indexed shifter for the rear derailer. The shifters are operating by turning the grip front and back (like a motorbike throttle). The front shifter is on the left. You must learn how to find the right position yourself, because it is a friction shifter, you can move it ...


10

It is an inline barrel adjuster. By holding the end closest to the Shimano "O" and rotating the knurled end you can finely adjust the shift point of the front derailleur. If looking at it from the knurled end, counterclockwise rotation will make the adjuster longer.Clockwise rotation will make the adjuster shorter. This movement will increase or ...


9

The parts that Blam refers to are known as the pawls and the ratchet inside the freehub. Slipping can happen for a number of reasons, including worn ratchet, worn pawls, weak springs, or excessive accumulation of grease & grime within the freehub. http://dirtmountainbike.com/features/work-freehub-body.html has a thorough explanation of the different ...


9

One of my bikes has no indicators and I'm less familiar with it than my other bike which has indicators and more years especially at the top. But I don't find it to be a problem. You don't need to know exactly which gear you're in, just enough to know (e.g) that if you want to drop a gear you need to drop a chainring. A combination of feel and a vague ...


9

Rode downtube friction shifters bikes for a while. I can see two possible causes : either the shifter was too lubricated, or the screw isn't tightened enough. Try to tighten it more, but pay attention not to tear the screw. Usually the lever is pretty rigid when moving. If it's easy to move it to the point it moves alone, it's probably because it wasn't ...


9

Beyond the question of finickiness of actually using the system with higher cog counts, it's a matter of whether there's enough total cable pull from the shifter in friction mode to cover the range of movement needed given the cassette used and the actuation ratio of the derailer. Here's an excellent article with the basic data you need to figure it out, ...


9

There was a remote shifter available for ST-M952 and SL-M952 and some others of the era, so you could shift from your bar end. It actuated the main shifter via cables and housings. This is a stop for the housing.


9

Yes. Shimano introduced the 3300 STI in 1999, which has a downshift lever on the hoods, and reach adjust via screw (the main models had only rubber shims to adjust reach). This continues today as Tourney ST-A070. Generally people are quite rude about this as it is 'not pro' but it will suit some people better. The third release of Dura-Ace brifters was 7800,...


9

Yes you're missing a barrel adjuster. There are two common threads, and its hard to tell which yours are in the photo. If you have a shifter on the other side, it should have the same part in the right place. Probably looks something like this: and most bike shops should be able to order the part.


8

The typical way of using a Shimano IGH with a dropbar is using a device called a Hubbub. It is essentially a little handlebar that plugs into the right hand side of the drops and gives you a mount for the usual twist shifter which comes with the IGH (This is what I would recommend). Another alternative is mounting it on the center of the bar with an extender ...


8

It just so happens I had one of these land in my garage for a fixup today. So I've taken some photos of how it went. tl;dr Answer Root cause lubrication. The pawl for up-shifting wasn't engaging the teeth. This is for a Right hand shifter, for the REAR mech. I assume a Left shifter for the FRONT mech is similar inside, with fewer teeth. Remove the ...


8

For those who aren't familiar, a SRAM Automatix hub is a 2-sped internal gear hub which shifts automatically, with the shift mechanism and everything contained in the hub. The mechanism is mechanical, and there aren't any batteries or anything involved. So, no cables to the back of the bike needed except for a brake cable if you have a freewheel Automatix (...


8

A thumb /trigger shifter has been developed for the Rohloff speed hub. It has been manufactured by Cinq5 and is called Shift:R. It involves two levers one for up-shifting and one for down-shifting. I assume it will take some ride time to get used to the new and some what unusual methodology. They are not inexpensive. Reviews have pros and cons so you would ...


8

Shifters don't care about wheel/rim size. They only care about how many gears there are to shift across, and once you hit 10~11 speed then it also matters whether the bike is using a road or MTB groupset. Answer Yes you can move shifters to another bike, as long as the speeds match, and the handlebar diameter is the same. Your bike is a 3x on the front and ...


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