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Enviolo system is a good idea but the shifter tends to destroy cables very quickly. They aren't hard to adjust correctly but I think from factory (UA) they are left a bit loose so the cables can get some air time as the shifter is turned = seems to fray the cables at the heads really quickly, like within 2 months of family use quickly.
Latest HDD ultra X cargo beefy boy version of the Enviolo is hopefully more rugged than previous versions, though if you are a mechanically sympathetic person and use the full range without just leaving it in one spot the whole time you will not encounter as many problems. Its partly due to most bikes that have the Enviolo hub fitted are family use or courier use and get blasted. Latest version is hopefully the ideal though, always going to be saggy and mushy feeling.
I worked briefly with a guy who was making a different version of an infinite IGH, cool idea, very cool design, but only moderately efficient in the mid range like many others, as you get outwards from direct drive the efficiency was basically unsuitable for manual bike use, mid drive or hybrid hub direct drive would have been ideal, but still lossy. From an engineering perspective though would have certainly been harder wearing than Enviolo's hubs, but more expensive than a Rohloff, hence never made it to market.
Envolio automatiq: anyone got one and rate it/hate it?
Seems it might make sense for someone who doesn't know how to use gears. Can they shift when stopped?