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2

I had the same fear that a screw came out of my Tiagra RD or something. But watching a youtube video eased my fear and the content suggested that it might be an access for servicing and it is by design. The video is not exactly for Tiagra (but for 105), and it has the same 2mm access. Hope this helps.


0

Since the split rings on both my pad retaining bolts have dislodged themselves, I'd say the pins are more secure.


7

You may have a hard time finding someone to tell you exactly what's under there in terms of the architecture and what part bears how much load, since replacement parts aren't available to service or replace the master cylinder on these. I'm going to make an educated guess here based on having done a master cylinder replacement on a road lever that parts ...


4

There's a variant of this FD that is intended for frames with no housing stop at all for the cable housing. It features a housing stop that's integral to the derailleur itself. That's what they're talking about. They chose a confusing name for it because there are frames that have a housing stop near the FD/BB area that some would call a full or ...


1

Your RD-M591 is a 9 speed rear derailleur, and has these ratings: Item Value Low sprocket_Max 34T Low sprocket_Min 28T Capacity 45T High sprocket Max 12T High sprocket Min 11T So nominally your high gears are not high enough, there's a reasonable chance it would work anyway. It could be a bit noisier and have slower shifting in the high/hard gears. ...


1

The answer is no, you cannot use any of your older shifters, unless they're one of these time trial shifters: ST-R9160 ST-R9180 ST-R8060 SW-R9160 or the satellite shifter: SW-R9150. Shimano has not given any of the other older components the firmware updates required to work with the 12-speed components. While you can connect those components using the ...


2

Yes, if Shimano's specifications for your rear derailleur say the low-limit is 28 teeth, then you will almost certainly be able to fit a 30 tooth. But a 32 is more of a problem, and you may need to adjust the B screw. Fitting a 34 might be impossible. The rear derailleur will not be able to lift the chain sufficiently.


0

No, Shimano 11 mountain and road cable pull are different. If you want bigger than the 42t that GRX rear derailleurs can do, you're going to either be dropping down a road derailleur with one of the hanger extensions, or using an adapter to a mountain derailleur.


6

If you do it with an 11-speed chain on your 7-speed cassette, the rear shifting will be laggy, although once it's on a gear it will work. The better way to do it is keep using a 7/8-speed chain, and space out the front chainrings a little to avoid rub and involuntary pickup. What I do that just works most of the time is use a Wheels Mfg 0.6mm chainring ...


1

The GRX FC-RX600-10 46/30 crank should go without issue on anything that came with the FSA 48-32 crank in question here. It will work fine with your Apex FD presuming it's still in good condition. I don't believe there's any compatibility between the SRAM road 10 FDs and your X7 left shifter beyond what can be fudged together. Ways you could address that ...


1

Regarding the comments about braking on the hoods, I believe I usually brake with 3-4 fingers on both the road and gravel with Ultegra Di2 hydraulic levers. I don't think that 2 fingers is enough for a hard stop, even on hydraulic disc brakes. However, I suspect I am a similar size to the original poster. In the drops on dirt, I do wish my brake levers were ...


3

There would be a couple of potential problems if this were an MTB frame (NB: It's not; see comments & edit to original post). First, is your frame even compatible with a 46t big ring? MTB frames need to accommodate big tires. The way the chain stays are shaped for that purpose may preclude use of a 46t big ring. Wolf Tooth has a sizing guide that may ...


2

Really most any Shimano triple road front derailleur for 8, 9 or 10 speed will work. Either one that comes with a 31.8mm clamp band or a braze-on type front derailleur can be used with a braze-on adapter, which is a clamp band that will accept the braze-on type derailleur if the bike lacks a braze-on mount. The adapter clamp band will obviously have to be a ...


2

It seems like an innocent question, but the situation can be maddening when a replacement FD is needed for any of the 30-42-52 cranks. Front derailleurs have a spec that has been called by Shimano both "Min. difference between top and intermediate" and "Applicable top-mid tooth difference". It is the minimum difference in tooth count ...


2

Yes, the chain should be able to clear the cage and the pull ratio is the same. There could be also incompatibility in the ability to wrap a chain of certain gear ranges and in maximum and minimum sprocket sizes. M410s were available as GS (medium cage) or SGS (long cage), T3000 is SGS (long cage). It is not clear which one you had, but you should be fine ...


3

No. The lever action is not adjustable. And consider that if it were, you'd need to push harder over the shorter stroke to achieve the same effect.


8

As MaplePanda correctly points out, these bolts are not meant to be disassembled by the end-user. From Shimano's technical documents website, here are the pertinent documents related to your SM-CRM75 direct mount chainring. None of the documents refer this area of the chainring. This is a fairly gross oversight on Shimano's part, especially when ...


2

These happen with nearly every shifter, no matter what type you're using. The failure mode is fatigue on bends. The problem is that bend diameter ratio of cables should be 72 for long life, with 42 being an absolute minimum. This means bending diameter of 1.2mm cables should be 86.4 mm with 50.4 mm being an absolute minimum. Thus, the bending radius should ...


1

I am no expert on freewheels, but it look like this model freewheel has no splines or notches to insert a tool to remove the freewheel. If this is the case, the easiest way it to dismantle the freewheel in place and it can then be removed, however this is destructive and requires a new freewheel. Refer Parktool freewheel removal Parktool freewheel ...


3

All Shimano rear derailleurs of the 6, 7, 8, 9 speed classes, plus road 10 speed (except Tiagra 4700) use the same "actuation ratio." That's a colorful phrase to say that rear derailleurs from these speed classes respond identically to shifter input. For example, many touring bikes with drop bars and, say, 10 speed STI's (road shifters) will use a ...


7

When I was putting serious mileage on a road bike, changing the inner shifter cables was just proactive maintenance, and I'd do it yearly which was 8-10 thousand km. If your inner cable is under high tension during shifts (ie is hard to press and takes force) then inspect further down the line, looking for causes. Could be your rear loop of outer is too ...


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 ...


0

Yes, you should get a 9-speed crankset. Preferably, but +-1 is likely to work decently. The front derailleur is also 2x vs. 3x specific. The 3, has a noticeably bigger inner plate. It is not that expensive sou you should get the 2x one. You of course have to consider the bottom bracket your new crankset will need. If you have a recent Sora that uses ...


2

I use a SLX M662 Shadow 9 speed rear derailleur with my Shimano 105 5700 10 speed shifters. The cable pull ratio is similar enough for it to work pretty well. 10 speed MTB derailleurs have a different pull ratio. The advantage is that it allows me to use a 11–34 tooth cassette. The 105 rear derailleur is limited to 11–30 11–28. If you don’t need the ...


4

From what I can see, the answer is no, at least directly. Shimano has made a new standard for the E-tube wire which is thinner and sleeker, but also has a new, smaller connecter. The new cable physically won’t connect to the old shifters. Whether or not adaptors will be available from Shimano or others is something I can’t answer at the moment.


1

What you're describing is called a "mullet drivetrain." There are some specific combinations of parts that do work, but in general, you can't mix-and-match parts and get a workable result. The reason is that different shifters pull a different amount of cable per shift, and different derailleurs expect a different amount of cable pull per shift. ...


9

Additionally, all derailleur bike chain is 1/2" pitch, with a nominal 3/32" width. The difference in width is much more subtle - https://bicycles.stackexchange.com/a/17065 shows that the differences in width can be less than 0.1mm


3

I don't have a new one in front of me, but yes that looks like the cable has sawn through due to the extreme exit angle. If the barrel adjuster itself is affected, that is easy to replace. The plastic outer part of the RD-R7000 barrel adjuster is different and special looking compared to most Shimano RDs, but I believe the steel threaded adjuster itself ...


18

will this new 7-speed chain work on a 10-speed cassette? No. That's based on my experience with a nine-speed chain shipped by mistake on a 10-speed drive train. That didn't work well - shifting was horrible at best and the chain wouldn't stay seated on some gears. If a nine-speed chain does that, a 7-speed chain will be unusable. If it even fits through ...


5

Nobody has tried yet, but it's likely that some people will, one of them being Terry at Bettershifting.com. As background for other readers, the Di2 system battery contains the central processor. Shimano just announced 12s Dura Ace and Ultegra groups today. Time trial and triathlon bikes are a very small share of the performance bicycle market. Shimano ...


1

As discussed in comments, the part in question was not crank bolt but dust cap. The standard dust cap thread is 22x1mm, but often they are plastic parts that are just pressed in or even more commonly, part of the crank bolt.


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