ltwoo erx electronic groupset

L-Twoo eRX electronic groupset – 105 Di2 obsolete now?

I wrote about L-Twoo a year ago, noting that this is a great Chinese company to watch. They released their first electronic groupset a while ago, which is not a great surprise. It may be weird to hear that for some people, but making an electronic groupset these days is probably cheaper, and easier. Reason is obvious: mechanical things, which includes bike parts, has a “feel factor”. A groupset may perform fine, but may not “feel right”. Mechanical parts clunk, sound, sends feedback. Some people get used to this feel for years, and feel awkward when they change the brand, or even the move to a different part from the same manufacturer. Mechanical parts are prone to wear, failure, cracks and lots of problems due to design, materials or production factors. Brifters are the real interface of a road groupset,… Continue Reading L-Twoo eRX electronic groupset – 105 Di2 obsolete now?

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105 di2 RD R7100 full groupset

Shimano 105 Di2 groupset price and specs: R7100 Di2, revolution or coup?

The road cycling world was expecting a revolution when Shimano announced their mid-level but highly acclaimed 105 groupset will go electronic, with the new 105 Di2 groupset. 105 have been the groupset that defined price and functionality level, and feared the competition, being the best bang for the buck. Logically, the R7100 series could be the milestone that will democratize the electronic groupset for the masses. Why not? Shimano could destroy the competition, as they have advantage of mass producing fast and cheaper then others, especially Campagnolo. Even the FSA would not be relevant anymore – I doubt it is, now. Unfortunately, 105 Di2 groupset, at least the first iteration of it, R7100 series, have been a major miss for most. Shimano 105 Di2 groupset price: it is not cheap. The main selling point of mechanical 105 groupset is, it… Continue Reading Shimano 105 Di2 groupset price and specs: R7100 Di2, revolution or coup?

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105 R7100 Di2

What is Shimano’s Di2 in detail, first successful electronic shifting system

  Electronic shifting is not a Shimano invention, but it’s Shimano who did it commercially viable. It all started with Shimano Dura Ace 7970 Di2 in 2009, for road bikes, then came the XTR version for MTB, GRX for gravel bikes, and Alfine Di2 for gear hubs. First Di2, Dura Ace 7970 Di2 and newer Di2 versions are totally incompatible: the 5 plug version is very simplistic: it’s just wires connected to switches and derailleurs across junction boxes. Newer Di2 versions though, use CAN bus for communication between components. CAN bus is known for its extensive use in all modern cars, and became the norm for even the cheapest ones in late 2000’s. But CAN bus, being a data communication protocol, can be used in anything, and it is, including machinery. Unlike Sram’s eTap, which is designed to be wireless… Continue Reading What is Shimano’s Di2 in detail, first successful electronic shifting system

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wheeltop wireless derailleur mtb 12 speed

Mysterious disappearance of Chinese electronic rear derailleur, WheelTop EDS OX

I’m annoyed by electronic drivetrains, because of their vendor lock nature: you cannot use shifters from any other manufacturer, though it is perfectly OK to implement. But the most annoying part is, they are designed to make you spend more. There is no reason for an 11s electronic rear derailleur to mismatch with a 10s cassette. Anyone who knows a few about electronics already knows it’s very easy to make it work with ANY cassette. Jockey cogs will need replacement, but that’s a very easy obstacle to handle properly. WheelTop is the first manufacturer that came out with a decent design, that is advertised to work with 7 to 12-speed cassettes. Now, the product disappeared, even from the company website. I won’t be surprised to know they had troubles with Sram, maybe Shimano. Thing is, I’m sick of patent trolling.… Continue Reading Mysterious disappearance of Chinese electronic rear derailleur, WheelTop EDS OX

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dtswiss thru axle

Newer bike standards that are actually good

We started to see emerging new “standards” or “tech” especially in the last decade. Most of them are vaporware, causes more problems and confusion then to provide a solution to problems they address. I’ll try to see the brighter side today. There are some standards that are actually needed. Stupidly, most of them tries to fix some problems that were non-existant before. It’s still good to solve a problem, without thinking about the causes, or who messed it up in the first place: Thru axles: Thru axles is a nice idea, and it solves 2 problems: one is the one with disc brakes, and the other one is about cup and cone bearing hubs. QR (Quick release) is quite an old piece of ….technology, first made by Campagnolo. I never liked it a bit, because you are compressing the hub… Continue Reading Newer bike standards that are actually good

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sram force e tap axs 1x electronic groupset

Why electronic groupsets like Shimano Di2 are the future?

For years, many photographers insisted on DSLRs and ignored mirrorless cameras. Then, something very silly happened: camera makers started making mirrorless cameras with a DSLR “hunch”. Now, everybody is flocking to mirrorless cameras, selling their perfectly fine DSLRs for pocket money and grabbing mirrorless cameras at highly inflated prices. Why? People doesn’t like change. But when it’s unavoidable, or that change provides real opportunities, they follow the crowd. Electronic groupsets is good for ordinary people like you and me. The reason is not the groupset itself: they’re heavier and more expensive. Thing is, in Shimano-speak, they are capable of “syncro-shifting”. For those who don’t know what it is, it automatically adjusts gears so that each consecutive gear combination that is selected is the perfect combination. Let’s say you have hypothetical 3s chainrings, namely A,B,C; A being the biggest chainring. Then… Continue Reading Why electronic groupsets like Shimano Di2 are the future?

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