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7

There is a difference between the direct gear, and the default gear: The direct gear is the one that basically locks the hub's body to the sprocket. The internal gear ratio is exactly 1, and transmission losses should be minimal. The default gear is the one that gets selected when there is no shifter attached to the hub. It is selected by internal springs ...


6

The most common places where there is a chance of liquid oil getting out in bicycles are: suspension fork, rear damper, and hydraulic brakes. The bike you mention, however, does not have suspension, but does have hydraulic brakes. Could that be brakes? Have you noticed any change in braking action recently? Another possibility is that the contamination is ...


5

Most don't understand lubricating freehub internals. The Shimano freehub grease is not for all Shimano freehubs. Only the ratchet type using clutches. The 3 or 4 pawl type are to be lubricated using only oil; mineral oil, Phil Wood Tenacious Oil, Triflow, Dumonde Freehub Oil just like the Park Tool freehub service page suggests. Any grease, even Shimano ...


5

The key is to identify the source of the oil. Some Dawes Discovery 301s have V brakes and others have hydraulic. If you have hydraulic brakes it's possible the oil could be coming from your brakes but it's unlikely to have been happening over the length of time described without noticing a reduction in braking power. It's difficult to say with accuracy based ...


4

CS-HG500 is one of the ten-speed cassettes that doesn't come with a 1mm spacer, which is always the first thing to check when significant trainer shifting interchange problems happen with 10-speed. But it doesn't apply here. The next thing to check is whether the wheel has got a 10-speed cassette installed on an 11-speed freehub body, and if so whether the ...


4

The trainer comes with a 11-speed road freehub body, that is a bit wider than the "classical" Hyperglide freehub body. If I'm not wrong, you have a 10-speed cassette, so you need to install a 1.8mm spacer before installing your cassette. Did you install this spacer? Note that in general, you may need 2 spacers when mounting a 10-speed cassette on a ...


4

With the "long armed" Shimano road front derailleurs (FD-4700, 5800, 6800, and 9000) it is hard to overstate how much cable tension is needed to avoid the exact problem you're having. They are very different from other front derailleurs in this way. This is true even when the converter setting is correct. (Although it will be worse when it's ...


3

There's a number that would work. The first thing is to determine whether it's long or short cage (GS vs SS respectively in Shimano parlance). If you want something currently made that's a decent replacement of around the same quality, the Sora RD-R3000-SS or -GS is closest. It's nominally 9-speed but will work. For cheaper the current Claris R2000 will also ...


2

To answer my own question, yes it works. Here are what I did over the past couple of weeks: 11 speed crankset, 7 speed shifter/freewheel/chain, and 10 speed rear derailleur. Works perfectly. 11 speed crankset, 11 speed shifter/cassette/chain, and 10 speed rear derailleur. Works acceptably as a temporary solution. 11 speed everything. Works perfectly again. ...


1

Based on the published specs, both are 9 speed, both are MTB, so yes it should work fine. Links: https://bike.shimano.com/en-EU/product/component/alivio-m3100/RD-M3100-SGS.html https://bike.shimano.com/en-EU/product/component/alivio-m4000/SL-M4000-R.html For 9 speed and fewer, then the distinction between road and MTB is merely marketing. At 10 speed ...


1

SRAM road 12sp is interesting because they claim to have redesigned the chain with larger rollers than the chains most people are used to. For this reason it is entirely possible that the Ultegra chainset you currently have will work very poorly and lead to some damage. On other 12sp systems, it may work or it may shift less than perfectly but a normal (non-...


1

The SRAM 12-speed chain is narrower and is not compatible with the 11-speed rings on Ultegra, it won't be taken up by the teeth. Swapping the chainrings for SRAM rings is not possible either because of the shape of the rings. and the BCD for Sram is 107mm while it's 110mm for Shimano. You could try to resell the powermeter crankset. Even if you could keep ...


1

Chainrings are special wear items in that they can be used even if severely visibly worn. It is very typical of used chainrings to show wear in the points that transmit forces, being a visibly different location than the points that don't transmit forces. In some chainrings, it is possible to "rotate" the chainring on the crankset to even out the ...


1

There is no way to make your right 8-speed Claris STI index on any 10-speed cassette. It doesn't have the clicks. The most minimal way of doing it would be replace the right STI and the rear derailleur, say both with Tiagra 4700 parts, and then the cassette, chain, and front derailleur. Limping the bike along with an 8-speed claris FD on a 10-speed chain is ...


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