Stretched@Birth Posted April 5, 2021 Share Came across this on YouTube this morning, interesting piece of tech. Link to comment Share on other sites More sharing options...
100Tours Posted April 5, 2021 Share cool idea, I have questions about the proprietary cluster that seems to be needed - I doubt it was entirely necessary. otherwise looks very cool. Link to comment Share on other sites More sharing options...
Jbr Posted April 5, 2021 Share Not really a 1x, you still get two times 11 gears. But great idea, I'm surprised it took so long for someone to come with something beter than this utter **** that front derailers are... Edited April 5, 2021 by Jbr DieselnDust 1 Link to comment Share on other sites More sharing options...
FirstV8 Posted April 5, 2021 Share Yes i agree i wonder why its taken so long for this concept to be built and perfected . In the 60s when i started cycling i had a Raliegh carbon steel 26' bike with Sturmey Archer 3 speed rear hub gearing as my school transport . When i got my first DHC racing bike the Raliegh became my experimental toy . I adapted a 5 speed cluster ( Cassette ) with a rear Simplex Derailleur onto the Sturmey archer hub which gave me a bigger ranch of gears than my then DHC with a 52/48 X15 to 18 cluster . The problem with it was that all my mods on it were homemade in my dads workshop and were not that precise ,so axles extension broke and the little pulling rod that went into the axle and changed the inner planetary gears was always snapping . Needless to say i had a unique piece of kit that was the envy of my mates . Stretched@Birth 1 Link to comment Share on other sites More sharing options...
Shebeen Posted April 5, 2021 Share Not really a 1x, you still get two times 11 gears. But great idea, I'm surprised it took so long for someone to come with something beter than this utter **** that front derailers are...i don't see your issue with front derailleurs. easiest bit of bike tech to adjust and maintain NickGM and Gerhard765 2 Link to comment Share on other sites More sharing options...
DieselnDust Posted April 5, 2021 Share planetary gearboxes have more viscous drag so absorb more power from the rider. Not exactly something pros and other marginal gains folks including golfers would leap at. Its also a lot heavier than a front derailleur with cable...... Shebeen, NickGM, Prince Albert Cycles and 2 others 5 Link to comment Share on other sites More sharing options...
Jbr Posted April 6, 2021 Share i don't see your issue with front derailleurs. easiest bit of bike tech to adjust and maintainThey tend to fail you at the worst possible time (at the bottom or at the top of a climb, in a race preferably), then you must go remove that chain from between your blades and your frame, what an absolute pleasure. Link to comment Share on other sites More sharing options...
FondTF2 Posted April 6, 2021 Share Sure it will cost lots of Randellas. Link to comment Share on other sites More sharing options...
lechatnoir Posted April 6, 2021 Share planetary gearboxes have more viscous drag so absorb more power from the rider. Not exactly something pros and other marginal gains folks including golfers would leap at. Its also a lot heavier than a front derailleur with cable...... IIRC, the video points to pretty high efficiency. the weight too, is pretty competitive when compared to a DT Swiss 240 hub. DieselnDust 1 Link to comment Share on other sites More sharing options...
Martin PJ Posted April 6, 2021 Share planetary gearboxes have more viscous drag so absorb more power from the rider. Not exactly something pros and other marginal gains folks including golfers would leap at. Its also a lot heavier than a front derailleur with cable......Also for 1 x you need a derailleur with stronger spring, even a clutch is preferable. Front chain ring must be narrow wide, and then the chain still falls off. The front derailleur is actually a pretty good chain guide preventing the chain from falling off. I made 1x arrangement on a road bike and in the end had to put a rather large chain guide on it, even with the narrow wide and MTB derailleur. DieselnDust 1 Link to comment Share on other sites More sharing options...
FondTF2 Posted April 6, 2021 Share Googled the price. Looking at +/- 2400 Euro (R42000) for the wheelset and gearing. Guess that is going to be way out of reach for most of us Saffas. DieselnDust 1 Link to comment Share on other sites More sharing options...
Jbr Posted April 6, 2021 Share Googled the price. Looking at +/- 2400 Euro (R42000) for the wheelset and gearing. Guess that is going to be way out of reach for most of us Saffas.Some people pay 40k just for a wheelset, so for the wheelset + drivetrain (at least most of it), it is not such a bad starting point. If it takes off and they start producing/selling more prices might drop a bit as well (or not, because we're talking cycling parts here) DieselnDust 1 Link to comment Share on other sites More sharing options...
DieselnDust Posted April 6, 2021 Share IIRC, the video points to pretty high efficiency. the weight too, is pretty competitive when compared to a DT Swiss 240 hub.Watch the marketing material carefully. The weight is for the wheel set without the planetary system installed. They don't give you weights with it installed but claim its "competitive"... Efficiency is also a loose term. Planetary systems have high torque (mechanica) efficiency but still lower than a simple chain and sprocket set. Edited April 6, 2021 by DieselnDust Link to comment Share on other sites More sharing options...
Shebeen Posted April 6, 2021 Share i rode with some (very silly) municyclists a few years back, they all had geared unicycles. the concept is not really new..https://www.krisholm.com/en/gear/component/kh-schlumpf I'm guessing the 100% high gear will be efficient, but the 70% lower gear will be where this product will be viable or not...no one wants to spend lotsa cash and then throw away drivetrain watts They tend to fail you at the worst possible time (at the bottom or at the top of a climb, in a race preferably), then you must go remove that chain from between your blades and your frame, what an absolute pleasure.that's a setup issue. A and B limit screws on a 2x FD are the easiest things in the world. DieselnDust and Long Wheel Base 2 Link to comment Share on other sites More sharing options...
MudLark Posted April 6, 2021 Share planetary gearboxes have more viscous drag so absorb more power from the rider. Not exactly something pros and other marginal gains folks including golfers would leap at. Its also a lot heavier than a front derailleur with cable...... Land Rover owner thinks... keep the FD and have 44 gear options to choose from, from super low through to super high.... Stretched@Birth and DieselnDust 2 Link to comment Share on other sites More sharing options...
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