Thank you for making this video. I can approach the project with much better understanding and a lot less anxiety after viewing your video.

Many thanx man! Without this video I'd capitulate! Got shifter from friend who didn't file main assembly bolt and broke it! Got all pieces in sandwich bag! I made new 3mm longer bolt and got everything together again! I salute you! Keep on good job!

Well done!! I’ve never seen one of these successfully taken apart and rebuilt. I’m not sure I’ve got the capability to fix my broken shifter. It’s the preloaded springs.

I admire you for your patience and idea, good job.

thanks for the tips very useful!

Amazing explanation, thank you very much.

do you know what was the name of that plastic cable pull?

Thanks

Showing the inner mechanisms that make a shift is proof that it takes quite a bit of engineering, design, and ultimately manufacturing to make the system. This has to come at great expense. Now take modern electronic shifting. You only have to put two buttons in the lever. The rest of the indexing is done with a specific kind of motor that is driven via electronic driver. Electronics and motors are way cheaper to produce. So why is it then we are being charged so much for these electronic groups. Also with electronic systems they can make the movement to be whatever they want, 9 speeds, 10 speeds, 11 speeds, etc. using the same parts. All they have to do is burn in the firmware. I'm really mad about this. All consumers should be outraged. It's not new technology. Eventually electronic shifting will be on all bikes but at the moment they are charging so much for it not many people want to pay for it. I have Electronic 11 speed that cost me $3200 for the 11 speed groupset, verses the Campy Chorus 11 speed mechanical group I used before that which was only $1200. Now the Shimano 105 used to be the People's groupset went to electronic, doubled in price, and nobody wants it because it's almost $2000. How do we get more affordable bikes?

@amanwithamultitool

Жыл бұрын

It's a bit simplistic to reduce electronic shifting down to two buttons, a motor, a driver, and some firmware. It also takes a fair bit of engineering. Go ahead and take a look at a teardown video of an electronic shifter or derailleur. I can take apart a mechanical shifter or derailleur and show exactly what each part does to help move the chain to the proper position. With electronic shifting there's going to be a lot of handwaving: "pressing this button sends a signal to shift down." Sure, what kind of signal? What's the protocol? What's the communications packet look like? What does this part labeled C3 on the PCB do? Is there a state machine in the shifter? On the battery? In the derailleur? There's a lot more to electronic shifting than there is to mechanical, so of course it costs more. Sure, maybe the firmware could be tweaked to change the number of gears and the spacing between the cogs, but it's not in the manufacturers' best financial interests to let the end user do that right now. And honestly, they probably haven't designed for the edge cases users like me would want to subject their components to, so it's better for them to limit compatibility instead of dealing with the hassle of trying to provide support for arbitrary compatibility. I'd love to explore how to hack their hardware myself, but besides not having any parts to experiment on, it's a whole other level of difficulty compared to taking apart a mechanical shifter.

@wasupwitdat1mofiki94

Жыл бұрын

@@amanwithamultitool I have to disagree since I have an electronics degree in engineering, and I have been working in this field for almost 30 years now. The components or hardware to build a control device for a motor have been in the making and improved upon for many years. All you have to do is go to data sheets and find the components that fit your purpose and place an order. Today we have people 3D printing their own parts and companies doing it also, and injection molding processes that have been simplified far more than how it used to be done. It has become so cheap to make RC toys so cycling shifting systems would not be that much different. In the area of manufacturing and packaging which is where I specialize machines do all the processes of filling, crimping, indexing, etc., I can't even repeat it all. Once the designing has been done the mass production of the item becomes so cheap to produce and not very labor intense. Machines even do all the surface mounting and soldering, and robotics play a large role. Electronic groupsets are very cheap to produce and should not cost $3K TO $4K to the consumer. It actually is simplistic in comparison to manufacturing and handling of the mechanical parts that also require much more inspection and hand labor.

@amanwithamultitool

Жыл бұрын

I thought that a lot of that hand labor for mechanical shifting still has to go into assembling the electronic shifters- well, at least the electronic derailleurs. But sure, electronic shifting groups don't have to cost as much as they do now. It's almost as if the companies are maximizing their profit while they can. Ha ha. I can't get too worked up over it. Yes, they could change their firmware to work arbitrary numbers of speeds. Maybe they could sell more electronic groupsets for less. That's probably indicating that this is a market segment that's ripe for disruption. That's when I'll spend my money on electronic shifting. Until then, I'm trying to make 12 speed mechanical myself :) Maybe I'll make a video about my drop bar shifters with mountain bike derailleurs. They're only 11-speed because there aren't any 12-speed cassettes and derailleurs that can handle the 2x12 gearing I'd like

thank you for the super detailed video! i have a problem with my shifter where the main ratchet spins freely. if i hold the shifter upside down, the ratchet engages properly, but if i keep in its normal position, the ratchet spins down therefore not engaging with the mechanism. any idea how to hold it in place?

@amanwithamultitool

2 ай бұрын

That sounds like a pawl isn't catching, probably because the spring is either broken or just not fitted correctly anymore. Check to see which pawl is loose and then look at the spring on it- one end of the spring should catch on the pawl (usually on the backside of the pawl where it doesn't catch on the ratchet) and the other end should be anchored in a hole.

one of the pawls that is attached to the higher gear shifting metal plate is missing on a tiagra 4700 shifter that i bought not working. Do you know if it's possible to get a new one or a similar model that work s with this one?

PARABÉNS

Hi ,great video ,do you know of any repair specialists that we can send our stuff for repair ? Ideally UK based . I have an Left Ultegra Sti ,that has a spring needs correcting somehow to ensure consistent return of one of the pawls

Can you sell me either a 12 speed ratchet wheel or the drawings for the laser cutting?

@amanwithamultitool

2 ай бұрын

Sorry for the late reply. This is so late that mechanical 12-speed 105 is already available. But in case you're still interested, the Thingiverse project with drawings is linked to in the video description.

@mtwils

2 ай бұрын

@@amanwithamultitool mechanical 105 is available for hydraulic disc brakes, but not for mechanical rim brakes for the 1970s steel bikes we all know and love (and have spread to 130mm for 8-9-10-11-12 speed rear sprocket sets). I have not fully disassembled the 12 speed mechanical unit, but the unit itself does not fit the 11 speed shifters.