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3

The derailleur in the first photo doesn't appear to be mounted correctly. See how there's a big gap between the axle and dropout slot? I think you should just go with a regular, bolt-on derailleur. Non-replaceable hangers are usually found on steel frames (check yours with a magnet) and are perfectly fine to use. With steel, you can just bend it back into ...


2

TLDR: no that won't work. Shifters pull a certain length of cable per gear, derailleurs have an actuation ratio. Cable pulled x actuation ratio needs to match sprocket spacing. All Shimano road groups up to 10 speed (excluding Tiagra 4700 and GRX RX400 series) used the same derailleur actuation ratio so derailleurs of different 'speeds' could be mixed and ...


2

Assuming the 2013 Tiagra shifters are the 4600 series, it's not officially supported due to (indeed) difference in cable pull. I expect getting a smooth shift is going to be difficult if not impossible. If for some reason the Tiagra shifters are newer (and 4700 series) then the 10 speed shifter will work with the 11 speed 105 derailleur. You will obviously ...


4

It looks a lot like the Shimano TY-300-SGS on the product page, which would be a long cage rear derailleur. However there's no strict guarantee that the current derailleur is the best one for the job, and the definition of short, medium, long changes with time. There are other specs on the product page, like total capacity, low sprocket min/max, etc, which ...


-2

what are the trade-offs between the internal gear hub and an external gear hub and derailleur? The trade-offs are many and clearly in favor of derailleur gearing. For example: Some internally geared hubs have "freewheeling" positions between gears so if the cable is not adjusted, you can end up with no gear, causing you to fall if trying to pedal ...


2

It looks like Specialized built bikes with that name from 1993-2010. A lot changed over that time. In the last year the bike was produced, it had a triple crankset (and presumably before). Triple chainrings are less popular these days, so your choices for a front derailleur will be limited. For the rear derailleur, you'll need to find something compatible ...


3

On these Shadow derailleurs, there is a tab that must rest on the bottom lip of the derailleur hangar. (I'll note at this point that you must use the correct hangar for your bike. "Almost" like it or "derailleur has the same angle" when an incorrect hangar is used doesn't cut it. Millimeter differences create big changes in the workings of these things. ...


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