they would also make built-in charging, that if you pedal and charge on the way, it would be cool for example, you drive from a mountain, and it charges, and then it helps uphill =)
In der Anschaffung schon nicht ganz günstig, aber man braucht hier dann auch immer eine spezielle Bremsscheibe? Wäre interessant, was die dann kostet, weil man die auch häufiger mal tauscht, wenn man das Rad regelmäßig nutzt. Und bei Lieferproblemen müsste man solange auf den E-Antrieb verzichten, weil andere Hersteller nicht kompatibel sind. Immer etwas, was bei kleineren Produzenten durchaus risikoreich ist
they would also make built-in charging, that if you pedal and charge on the way, it would be cool for example, you drive from a mountain, and it charges, and then it helps uphill =)
they would also make built-in charging, that if you pedal and charge on the way, it would be cool for example, you drive from a mountain, and it charges, and then it helps uphill =)
@@philipkern6774 There was no mention of a range of power levels either, so presumably there is just one level. For 550 Euros I converted my cheap road bike into a reasonable facsimile of an e-road bike, by fitting the Revos friction drive kit. The appearance is virtually unchanged, and the all up weight compares very favourably with something like the Orbea Gain at 13.5kg. Obviously it is less refined than the Mahle system in having only one power level - which can be quite well accommodated by judicious use of the gears - but it does the same job very well. It provides excellent assistance on the hills - my reason for the purchase. This new system seems very pricey for what it is.
So it's constantly engaging and disengaging the disk - there can't be continuous engagement because of the stays. That's ripe for mis-alignment or fouling or wear over time and would seriously concern me. Plus it's way too expensive, anyway. Good luck guys but my spider senses tell me this isn't going to last.
Also it's not clear how it works with the brakes. There's no link to the brake system and instead relies on crank movement, but the brakes can be applied whilst moving the cranks so are the two systems going to clash?
It doesn´t constantly engage and disengage, the motor is constantly connected to the DiscDrive (through the 3 pins), and pulses back-and-forth (because of the chainstay), instead of making full, consecutive circles/rounds... With each pulse, the Diskdrive is being turned 5cm further, what seems to be 1/6th of a full rotation. The Diskdrive, embedded in the Brakedisc-Rotor, has an one-way-clutch at its circumference. Of course, when you brake, the brake turns the motor off, so, no clashing. I´d critisize, that the motor changing direction every 5cm it has moved to one direction, is not very efficient overall, but of course, it still works. Probably don´t use a motor, but another electromagnetic device, like solenoids. Imagine your right foot on the front pedal, and your left on the back pedal. Now, instead of pushing to the bottom with your right, and thus bringing your left to the top, in order to subsequently push with your left to the bottom, instead, you keep the starting positions of your feet/pedals, and make short strokes with your right, reciprocating back-and-forth, for 1/6th of a full revolution each time. In skarper, you have 2 pins accomplishing the same, one-after-the-other (when the 1st pin has pushed and now disengages to go back to its starting position, the 2nd pin is engaging and pushing. So, 1 out of 2 pins is always engaged, no fear of rolling backwards, when hillclimbing ;-) At least, that´s my understanding.
@@klausbrinck2137 What you're describing is a continual engagement/disengagement with the disk, which is what I said. The way you describe the action is that each pin moves in and out and drives a partial revolution, which is probably right. However, there are still the issues of fouling and wear. Plus that method seriously restricts the drive power as there's only partial engagement. A single pin or even two are not strong enough to handle the power to push a bike plus rider without bending or snapping the pins. Also, just to clarify, there's no connection to the brakes at all - the 'motor' is self-contained and clicked onto the bike, so there is indeed the potential for a clash between the 'motor' and the brakes. The more I hear about this thing the more sceptical I am. There's no way it can deliver sufficient power and also not be hampered by the serious technical issues.
@@garymitchell6372 The pin neer has to disconecct (unless u remove the whole mechanism). It is enough if the pin pulls the disc upwards,while the one-way-clutz engages, and then moves the disc downwards, but without the one-way-clutch engaging. There´s no connection and disconnection, but just a back-and-forth-ratcheting, which I find inefficient enough... But the forces are too small, to bent anything with time, I guess it´s about 1/10th-wheel-revolution each time, that´s too tiny of a torque/force. There´s also something else that´s strikking: E-motors are more efficient, not just cause it´s electromagnetism, but partly cause it´s not a reciprocating movement (to turn something), but a continuous rotary movement (to also turn something, which would finally make sense). Here, we have a reciprocating movement, which is primitive and, as said, inefficient enough. Utilizing electromagnetism like a caveman would conclude that it is ought to be utilized (the same caveman that invented internal combustion engines before), is a sign or regression, that´s mindblowing to me. It´s like given nuclear power, and instead of producing electricity, u use it all to build nukes. They could build in V-brakes on same bike, and replace the brake-rotor with a similarly dimensioned gear (with small teeth-modulus 1,5), turned by a much smaller gear, that´s driven by a motor. That would be more viable, and the solution I was expecting, before I watched the video.
@@garymitchell6372 In their site, they tell that they use a brushless motor: So, they turm rotational movement to reciprocating movement, in order to turn it again in rotational movement, which is complete bollocks... It will work, and nothing is gonna break, but that´s so inneficient, that the 200Wh will be sucked out of that battery in no time...
Unfortunately, they priced themselves out at that price. Good concept but the cost is more than enough to buy 2 foldables at Costco. Most larger ebikes are also less than that.
This actually is for turning expensive bikes into ebikes. Those including that Cannondale cost from 2500 to 12000 dollars. Sharper cost about the same price as a set of power meters.. which are a set pedals... that measure your pedaling power.
For an expensive 5k and up bike, I wouldn’t put on these strap on kits with a dinky battery. There are high end bikes that are motorized and those that buy expensive bikes to begin with would just buy the real deal.
No free lunch. Light weight, small size attachment will give you little power, short distance. Not counting the expensive price. This one has no chance to be popular.
Awesome idea and engineering, bring price down to 300. Dollars I'd probably buy one.
How much is it?
@@glennpells9712 expected to be 1200 usd
Brilliant concept . Game changer . Can't wait for mark2
Do you guys sell in india
Indeed, good concept. But the price...
Hmmm £1000??? Will wait for china version then
Qual o valor
Qual o valor
Wat are specs and are their different levels
where is the link to buy?!
It's actually no less work than sliding a geared hub motor wheel into the rear dropout. I was thinking it would be very cheap.
they would also make built-in charging, that if you pedal and charge on the way, it would be cool
for example, you drive from a mountain, and it charges, and then it helps uphill =)
how the price you could give for philippines,?
Great idea but expect it will be perpetually on offer for 50% off like the swytch bike
😮👏🏻😲🙂
In der Anschaffung schon nicht ganz günstig, aber man braucht hier dann auch immer eine spezielle Bremsscheibe? Wäre interessant, was die dann kostet, weil man die auch häufiger mal tauscht, wenn man das Rad regelmäßig nutzt. Und bei Lieferproblemen müsste man solange auf den E-Antrieb verzichten, weil andere Hersteller nicht kompatibel sind. Immer etwas, was bei kleineren Produzenten durchaus risikoreich ist
they would also make built-in charging, that if you pedal and charge on the way, it would be cool
for example, you drive from a mountain, and it charges, and then it helps uphill =)
Interesting concept, compact, light but 200wh battery is not enough to use it more than in short urban commuting in flat areas...
they would also make built-in charging, that if you pedal and charge on the way, it would be cool
for example, you drive from a mountain, and it charges, and then it helps uphill =)
ስንት?
Price skarper
Geared hub motors don't have any drag and they are very light so this isn't necessary
Can get a whole ebike fir £1k.
Agreed! And not all bikes have disc brakes. I’ll stick with my Swytch kits!
@@philipkern6774 There was no mention of a range of power levels either, so presumably there is just one level. For 550 Euros I converted my cheap road bike into a reasonable facsimile of an e-road bike, by fitting the Revos friction drive kit. The appearance is virtually unchanged, and the all up weight compares very favourably with something like the Orbea Gain at 13.5kg. Obviously it is less refined than the Mahle system in having only one power level - which can be quite well accommodated by judicious use of the gears - but it does the same job very well. It provides excellent assistance on the hills - my reason for the purchase. This new system seems very pricey for what it is.
So it's constantly engaging and disengaging the disk - there can't be continuous engagement because of the stays. That's ripe for mis-alignment or fouling or wear over time and would seriously concern me. Plus it's way too expensive, anyway. Good luck guys but my spider senses tell me this isn't going to last.
Also it's not clear how it works with the brakes. There's no link to the brake system and instead relies on crank movement, but the brakes can be applied whilst moving the cranks so are the two systems going to clash?
It doesn´t constantly engage and disengage, the motor is constantly connected to the DiscDrive (through the 3 pins), and pulses back-and-forth (because of the chainstay), instead of making full, consecutive circles/rounds... With each pulse, the Diskdrive is being turned 5cm further, what seems to be 1/6th of a full rotation. The Diskdrive, embedded in the Brakedisc-Rotor, has an one-way-clutch at its circumference. Of course, when you brake, the brake turns the motor off, so, no clashing. I´d critisize, that the motor changing direction every 5cm it has moved to one direction, is not very efficient overall, but of course, it still works. Probably don´t use a motor, but another electromagnetic device, like solenoids.
Imagine your right foot on the front pedal, and your left on the back pedal. Now, instead of pushing to the bottom with your right, and thus bringing your left to the top, in order to subsequently push with your left to the bottom, instead, you keep the starting positions of your feet/pedals, and make short strokes with your right, reciprocating back-and-forth, for 1/6th of a full revolution each time. In skarper, you have 2 pins accomplishing the same, one-after-the-other (when the 1st pin has pushed and now disengages to go back to its starting position, the 2nd pin is engaging and pushing. So, 1 out of 2 pins is always engaged, no fear of rolling backwards, when hillclimbing ;-)
At least, that´s my understanding.
@@klausbrinck2137 What you're describing is a continual engagement/disengagement with the disk, which is what I said. The way you describe the action is that each pin moves in and out and drives a partial revolution, which is probably right. However, there are still the issues of fouling and wear. Plus that method seriously restricts the drive power as there's only partial engagement. A single pin or even two are not strong enough to handle the power to push a bike plus rider without bending or snapping the pins.
Also, just to clarify, there's no connection to the brakes at all - the 'motor' is self-contained and clicked onto the bike, so there is indeed the potential for a clash between the 'motor' and the brakes.
The more I hear about this thing the more sceptical I am. There's no way it can deliver sufficient power and also not be hampered by the serious technical issues.
@@garymitchell6372 The pin neer has to disconecct (unless u remove the whole mechanism). It is enough if the pin pulls the disc upwards,while the one-way-clutz engages, and then moves the disc downwards, but without the one-way-clutch engaging. There´s no connection and disconnection, but just a back-and-forth-ratcheting, which I find inefficient enough... But the forces are too small, to bent anything with time, I guess it´s about 1/10th-wheel-revolution each time, that´s too tiny of a torque/force.
There´s also something else that´s strikking: E-motors are more efficient, not just cause it´s electromagnetism, but partly cause it´s not a reciprocating movement (to turn something), but a continuous rotary movement (to also turn something, which would finally make sense). Here, we have a reciprocating movement, which is primitive and, as said, inefficient enough. Utilizing electromagnetism like a caveman would conclude that it is ought to be utilized (the same caveman that invented internal combustion engines before), is a sign or regression, that´s mindblowing to me. It´s like given nuclear power, and instead of producing electricity, u use it all to build nukes. They could build in V-brakes on same bike, and replace the brake-rotor with a similarly dimensioned gear (with small teeth-modulus 1,5), turned by a much smaller gear, that´s driven by a motor. That would be more viable, and the solution I was expecting, before I watched the video.
@@garymitchell6372 In their site, they tell that they use a brushless motor: So, they turm rotational movement to reciprocating movement, in order to turn it again in rotational movement, which is complete bollocks... It will work, and nothing is gonna break, but that´s so inneficient, that the 200Wh will be sucked out of that battery in no time...
Unfortunately, they priced themselves out at that price. Good concept but the cost is more than enough to buy 2 foldables at Costco. Most larger ebikes are also less than that.
True but those bikes don't have features like someone's Cannondale or their favorite bike. Everybody can't be Walmart lol
@@soulreed I wouldn't put this on an expensive bike.
This actually is for turning expensive bikes into ebikes. Those including that Cannondale cost from 2500 to 12000 dollars. Sharper cost about the same price as a set of power meters.. which are a set pedals... that measure your pedaling power.
@@vwtoys good for you, but a lot of people would
For an expensive 5k and up bike, I wouldn’t put on these strap on kits with a dinky battery. There are high end bikes that are motorized and those that buy expensive bikes to begin with would just buy the real deal.
A ile to kosztuje ?
looked at the website £1000 starting price to rich for my budget
A Grand !!!!! Forget it
1000 pounds....i can get an e bike for that price
You can't get an electric Cannondale for that price
You can get a burger for a dollar and a hooker for ten. Good luck if that's the level you aspire to in bikes.
No free lunch. Light weight, small size attachment will give you little power, short distance. Not counting the expensive price. This one has no chance to be popular.
Very good. Hm
Ill wait till it come out kn amazon cause most of these could be scam
£1000 🙄
Too expensive . Got no chance with China
Bikeon is better
korea want it
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