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7

It uses 10 speed chains. 4700 takes any applicable Shimano/SRAM 10 cassette. What's different is the RD actuation ratio, which is the same as Shimano road 11. So in other words each shifter click cable travel distance is different from older 10-speed Shimano shifters, and road 11 RDs can replace RD-4700, which again they can't on an older Shimano road 10 ...


6

Some cranksets are modular. I'm not sure if this is a standard term, but I do mean that the crankarms fit to the spider with a splined interface. Thus, you can replace the spider. Less commonly, on some modular cranks, you can even replace the spindle for a different type, but that's not relevant here (I am thinking Rotor cranks; Quarq isn't this type of ...


4

Here it might be useful to consider what is different with Tiagra 4700 10-speed and old 10-speed groups. It's not the cassette spacing, because Tiagra 4700 does not use special cassettes. You can fit any 10-speed Shimano cassette and it will work (subject to the constraints of rear derailleur capacity, big sprocket support and chain length). It is the rear ...


4

Back in fall I discussed it with my friend who is a material engineer and he thought we should try to repair it at least for the exercise. So we glued it back together with some kind of epoxy. Before the winter I couldn't get a replacement part and actually put it back on the bike and rode about 150 km with the repaired part. However, this it not something I ...


4

Diagnosis complete. The lever blade has a movement stop consisting of a small threaded rod butting up against a little “button”. See the right lever for reference: Compare that to the left lever, which is missing the button (presumably a mushroom-shaped press-fit pin that fell out): The missing button-shaped piece means that the lever blade can pivot ...


3

Being Hydraulic it is almost certain the caliper is double sided piston, where the pad on both sides moves. (Single sided calipers have a piston on one side, and push the disk onto pad on the other side). Presuming it is a double sided caliper, it is possible one piston is not moving, leaving the other piston to do all the movement and push one pad across ...


3

Both cassettes are functionally equal. The HG-50 is 100% steel while the HG-81 has an alloy spider for its larger sprockets and extra milling to reduce weight and improve shifting performance. Generally Shimano cassettes for a given speed range and discipline are interchangeable. What you need to watch out for is the change over to Micro spline in the 12x ...


2

I'm a bike shop and I was sold by another bike shop fake HG901s. What triggered us is that fact that a customer bought a chain, installed it, and came back after 100km of use and a wear of 0,75. I opened two more boxes of those and they both had 0,75 wear. The new fake and a new real put side to side show a very striking length difference, the same as when ...


2

Assuming you mean from side to side, many disc brake calipers push a piston in from the side and sandwich the disc between that piston and a fixed pad on the other side of the caliper. Part of the setup/adjustment process for such brakes is to set the fixed pad position as close as possible to the rotor without having it rub, so as to minimize the sideways ...


2

Shimano Sora is a rather low-end Shimano road bike groupset. (Only lower spec being Claris). Currently it is at R3000, a 9-speed generation. Thus it uses the standard "road" 6-10 speed (exceptions: Tiagra 10-speed, GRX 10-speed) / "MTB" 6-9 speed cable pull ratio in the rear derailleur. Shimano Dura-Ace is the top-end Shimano road bike ...


1

The Shimano pull ratios are: Dura-Ace before the 9-speed upgrade (anything 8 speeds and below) Standard (MTB anything 9 speeds and below, road anything 10 speeds and below) Road 11-speed (used also by GRX and Tiagra 4700 10-speed setups) MTB 10-speed MTB 11-speed (very similar to MTB 10-speed so you may find some cheap derailleurs having average of MTB 10-...


1

Focusing only on single vs double butted spokes: I am not sure that the distinction is very important in your case. In the bicycle industry, butting means that the wall thickness of a tube or the diameter of a spoke varies across its length. Usually, the ends will be thicker, since that's where you need more material - this applies to frame tubes and spokes. ...


1

What's your goal here? If you have a broken spoke, take out a good one from the same side of the wheel, and measure it. Note the front and rear wheels may have spokes of different lengths, and the rear wheel normally has longer spokes on the left-hand side of the bike. If you don't have any spokes, just a rim and a hub, then there are spoke length ...


1

You didn't say how many speeds, which is the most important parameter here. From what I googled about Trek 720 multi-track and Gripshift MRX 100, it seems your bike has a 7-speed cassette or freewheel. 7-speed cassette ideally should use 7-speed bar-end shifter, or secondarily if that's unavailable 8-speed bar-end shifter with one unused click (8 speed ...


1

Assuming your shell is either 68 or 73mm, you need the DUB 68/73 ISO (aka threaded aka BSA) bottom bracket. (SRAM calls it BSA instead of ISO, which is psychotic and shows naked and remorseless will to confuse). You need the larger size of the Shimano-pattern outboard BB tools to remove your old BB and the Dub size one for the new BB, which is the same tool ...


1

Answer: NO I did the opposite once - bought an 8 speed Nexus shifter that was super-cheap, for use on an 8 speed derailler. The cable pull of a nexus/alfine shifter is different to that of a conventional shifter, so clicks will not line up with gears. You might think that a friction shifter would let you get it in the right place, but since the IGH is ...


1

You could cannibalize a barrel adjuster (I think that's the broken bit if I understand your description) from an old shifter or derailleur. For most of the time these adjusters have identical threading. Try your LBS, they may have a parts bin with bits and pieces.


1

There are a variety of edge trim products designed to slip over a metal edge to protect both the metal edge and people. Searching on "metal edge protector" generated some good results. Here are a few of dozens of types The Rubber Company (only an example, not a recommendation) Trim Lok is another large maker of edge protection They can be made of ...


1

Parts higher up the range typically have a better finish quality, use higher quality materials and hardware and may have special treatments on pivot points. Often they can be lighter due to using a stronger, more expensive material or process. That's the general overview. Certainly the 105 calipers will have a much better finish than the Sora ones and the ...


1

When i look in my catalogue at aftermarket hoses and connectors (perhaps from Elvedes), the main factor with olive and barb compatibility is mostly relating to the hose, in instances where the compression nut is basically the same size. So to avoid problems, you use the olive and barb suitable for the hose you wish to use. Where you are certain the outer ...


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