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Tomorrow's Bicycle Drive?
See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. |
#2
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Tomorrow's Bicycle Drive?
On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote:
See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers |
#3
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Tomorrow's Bicycle Drive?
On Sun, 2 Jun 2019 04:42:01 -0700 (PDT), Sir Ridesalot
wrote: On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers In the latter part of the narration he explains the shift. It is a bit complex as it apparently uses different "Paths" on the "cassette" depending on the speed of rotation. see https://www.youtube.com/watch?v=UFAQ6CzNm7s for a repeat of the above reference or google on "CeramicSpeed Driven chainless drivetrain" for about 11,000 hits. Apparently they have built at least one complete bike as one of the sites has a picture of someone riding one https://hiconsumption.com/2018/07/ce...ss-drivetrain/ In reading the fantastic claims for reduced friction one should remember that a chain drive may well have as high as 98% efficiency. https://www.cyclingpowerlab.com/Driv...fficiency.aspx So essentially the Ceramic system may provide 1% greater efficiency than a well functioning conventional system. -- Cheers, John B. |
#4
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Tomorrow's Bicycle Drive?
On Sunday, June 2, 2019 at 8:18:56 AM UTC-4, John B. Slocomb wrote:
On Sun, 2 Jun 2019 04:42:01 -0700 (PDT), Sir Ridesalot wrote: On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers In the latter part of the narration he explains the shift. It is a bit complex as it apparently uses different "Paths" on the "cassette" depending on the speed of rotation. see https://www.youtube.com/watch?v=UFAQ6CzNm7s for a repeat of the above reference or google on "CeramicSpeed Driven chainless drivetrain" for about 11,000 hits. Apparently they have built at least one complete bike as one of the sites has a picture of someone riding one https://hiconsumption.com/2018/07/ce...ss-drivetrain/ In reading the fantastic claims for reduced friction one should remember that a chain drive may well have as high as 98% efficiency. https://www.cyclingpowerlab.com/Driv...fficiency.aspx So essentially the Ceramic system may provide 1% greater efficiency than a well functioning conventional system. -- Cheers, John B. But HOW DO YOU SHIFT? Is it a lever, a grip shifter? What? Cheers |
#5
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Tomorrow's Bicycle Drive?
On Sun, 2 Jun 2019 05:36:35 -0700 (PDT), Sir Ridesalot
wrote: On Sunday, June 2, 2019 at 8:18:56 AM UTC-4, John B. Slocomb wrote: On Sun, 2 Jun 2019 04:42:01 -0700 (PDT), Sir Ridesalot wrote: On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers In the latter part of the narration he explains the shift. It is a bit complex as it apparently uses different "Paths" on the "cassette" depending on the speed of rotation. see https://www.youtube.com/watch?v=UFAQ6CzNm7s for a repeat of the above reference or google on "CeramicSpeed Driven chainless drivetrain" for about 11,000 hits. Apparently they have built at least one complete bike as one of the sites has a picture of someone riding one https://hiconsumption.com/2018/07/ce...ss-drivetrain/ In reading the fantastic claims for reduced friction one should remember that a chain drive may well have as high as 98% efficiency. https://www.cyclingpowerlab.com/Driv...fficiency.aspx So essentially the Ceramic system may provide 1% greater efficiency than a well functioning conventional system. -- Cheers, John B. But HOW DO YOU SHIFT? Is it a lever, a grip shifter? What? Cheers The first reference I gave said that the "drive shaft" contained a remote receiver device which allowed shifting without wires or cable. No reference seems to have been given regarding the actual shift button, lever, whatever. -- Cheers, John B. |
#6
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Tomorrow's Bicycle Drive?
On 6/2/2019 5:47 PM, John B. Slocomb wrote:
On Sun, 2 Jun 2019 05:36:35 -0700 (PDT), Sir Ridesalot wrote: On Sunday, June 2, 2019 at 8:18:56 AM UTC-4, John B. Slocomb wrote: On Sun, 2 Jun 2019 04:42:01 -0700 (PDT), Sir Ridesalot wrote: On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers In the latter part of the narration he explains the shift. It is a bit complex as it apparently uses different "Paths" on the "cassette" depending on the speed of rotation. see https://www.youtube.com/watch?v=UFAQ6CzNm7s for a repeat of the above reference or google on "CeramicSpeed Driven chainless drivetrain" for about 11,000 hits. Apparently they have built at least one complete bike as one of the sites has a picture of someone riding one https://hiconsumption.com/2018/07/ce...ss-drivetrain/ In reading the fantastic claims for reduced friction one should remember that a chain drive may well have as high as 98% efficiency. https://www.cyclingpowerlab.com/Driv...fficiency.aspx So essentially the Ceramic system may provide 1% greater efficiency than a well functioning conventional system. But HOW DO YOU SHIFT? Is it a lever, a grip shifter? What? The first reference I gave said that the "drive shaft" contained a remote receiver device which allowed shifting without wires or cable. No reference seems to have been given regarding the actual shift button, lever, whatever. Don't know but any of a dozen setups would work fine for that. Those of a certain age are thinking something like an electric solenoid overdrive switch: https://www.hemmings.com/blog/articl...ive-solenoids/ In our brave new world a wireless control stepper motor in side the chainstay with a handlebar up-down switch probably. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#7
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Tomorrow's Bicycle Drive?
On Sunday, June 2, 2019 at 5:36:38 AM UTC-7, Sir Ridesalot wrote:
On Sunday, June 2, 2019 at 8:18:56 AM UTC-4, John B. Slocomb wrote: On Sun, 2 Jun 2019 04:42:01 -0700 (PDT), Sir Ridesalot wrote: On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers In the latter part of the narration he explains the shift. It is a bit complex as it apparently uses different "Paths" on the "cassette" depending on the speed of rotation. see https://www.youtube.com/watch?v=UFAQ6CzNm7s for a repeat of the above reference or google on "CeramicSpeed Driven chainless drivetrain" for about 11,000 hits. Apparently they have built at least one complete bike as one of the sites has a picture of someone riding one https://hiconsumption.com/2018/07/ce...ss-drivetrain/ In reading the fantastic claims for reduced friction one should remember that a chain drive may well have as high as 98% efficiency. https://www.cyclingpowerlab.com/Driv...fficiency.aspx So essentially the Ceramic system may provide 1% greater efficiency than a well functioning conventional system. -- Cheers, John B. But HOW DO YOU SHIFT? Is it a lever, a grip shifter? What? Cheers The mechanism is an electronic solenoid inside of the drive shaft. It would be simple and reliable. I like the idea but I don't think that we'll ever see them. |
#8
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Tomorrow's Bicycle Drive?
On Sunday, June 2, 2019 at 4:42:04 AM UTC-7, Sir Ridesalot wrote:
On Sunday, June 2, 2019 at 5:49:03 AM UTC-4, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. -- Cheers, John B. Seems to be a concept bicycle not an actual bicycle. I'd like to see how the bicyclist initiates a shift. I'd also like to see it in actual use. I wonder what the cost will be? Cheers The problem is that it requires a specially constructed frame. |
#9
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Tomorrow's Bicycle Drive?
On 6/2/2019 5:48 AM, John B. Slocomb wrote:
See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. I estimate that a New! Innovative! Revolutionary! Better! bicycle transmission has been invented every two years or so. -- - Frank Krygowski |
#10
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Tomorrow's Bicycle Drive?
On 6/2/2019 11:18 AM, Frank Krygowski wrote:
On 6/2/2019 5:48 AM, John B. Slocomb wrote: See https://www.youtube.com/watch?v=-9gQ1KRhesM In the narration he mentions that a 24 speed gear set, or even more, would be perfectly feasible. No wires, no cables, either. I estimate that a New! Innovative! Revolutionary! Better! bicycle transmission has been invented every two years or so. I would expect a hypoid gear set in an oil bath to be relatively efficient compared to a chain. Any ME comments on an open crown & pinion set? -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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