Lz Lee Posted November 28, 2016 Share Posted November 28, 2016 Link to comment Share on other sites More sharing options...
electric_vehicle_lover Posted November 28, 2016 Share Posted November 28, 2016 @Lz Lee which is the microcontroller of that new boards? STMF1xx or STM32F4xx? Link to comment Share on other sites More sharing options...
BenMason Posted December 2, 2016 Share Posted December 2, 2016 @Lz Lee What size wheel is that ? How much will it cost ? Thanks Link to comment Share on other sites More sharing options...
MaxLinux Posted December 3, 2016 Share Posted December 3, 2016 https://wholesaler.alibaba.com/product-detail/Promotional-340-680wh-battery-GEEKWHEEL-DIY_60490047653.html Link to comment Share on other sites More sharing options...
Marty Backe Posted December 3, 2016 Share Posted December 3, 2016 3 hours ago, MaxLinux said: https://wholesaler.alibaba.com/product-detail/Promotional-340-680wh-battery-GEEKWHEEL-DIY_60490047653.html It should be noted that the unit shown at Alibaba does not have the 12 mosfets. This wheel really intrigues me, but will we be able to buy it? And that shipping cost is kind of a deal killer. Link to comment Share on other sites More sharing options...
Lz Lee Posted December 3, 2016 Author Share Posted December 3, 2016 9 hours ago, MaxLinux said: https://wholesaler.alibaba.com/product-detail/Promotional-340-680wh-battery-GEEKWHEEL-DIY_60490047653.html we are thinking of selling 40A for super users. But we dont have suitable motor to match 40A. Only 500W motor is not enough for its performance. Link to comment Share on other sites More sharing options...
Lz Lee Posted December 3, 2016 Author Share Posted December 3, 2016 6 hours ago, Marty Backe said: It should be noted that the unit shown at Alibaba does not have the 12 mosfets. This wheel really intrigues me, but will we be able to buy it? And that shipping cost is kind of a deal killer. shipping to US, 1 pc GEEKWHEEL scooter , shipping cost 138 USD now. It is expensive ? or you have better forwarder, please recommend to us. thank you Link to comment Share on other sites More sharing options...
swvision Posted December 3, 2016 Share Posted December 3, 2016 Thanks a nice looking geek. I would buy one if it had soft padding like these and a better motor. just look how sexy these are: Link to comment Share on other sites More sharing options...
Marty Backe Posted December 3, 2016 Share Posted December 3, 2016 3 hours ago, Lz Lee said: we are thinking of selling 40A for super users. But we dont have suitable motor to match 40A. Only 500W motor is not enough for its performance. For the kind of riding that I'd like to do with a 2-1/2" wheel, etc. I'd need a more powerful motor than 500W. Link to comment Share on other sites More sharing options...
MaxLinux Posted December 4, 2016 Share Posted December 4, 2016 17 hours ago, Marty Backe said: It should be noted that the unit shown at Alibaba does not have the 12 mosfets. This wheel really intrigues me, but will we be able to buy it? And that shipping cost is kind of a deal killer. You're right; I did not notice earlier. I'm not interested in less than 12 mosfets. Also, they really need to do something about that shipping cost! Overall the concept of this wheel has potential, especially if they create a 16-inch version. Link to comment Share on other sites More sharing options...
MaxLinux Posted December 4, 2016 Share Posted December 4, 2016 12 hours ago, Lz Lee said: shipping to US, 1 pc GEEKWHEEL scooter , shipping cost 138 USD now. It is expensive ? Considering this is coming from China, I think that's a fair price for shipping. The website states: "Note: 30C controller (Lastest controller ) supports iOS system, Use bluetooth 4.0 connecting phone" Does this mean you do not have an android app yet? Link to comment Share on other sites More sharing options...
RolluS Posted December 4, 2016 Share Posted December 4, 2016 On 28/11/2016 at 4:29 PM, electric_vehicle_lover said: @Lz Lee which is the microcontroller of that new boards? STMF1xx or STM32F4xx? I'm going to look if I can read, because I've received some goods recently: I already have the same as the one pictured by @Lz Lee . Unfortunatly I've bought the 30B just before 30C were released. What are the differences between 30B and 30C @Lz Lee please? Link to comment Share on other sites More sharing options...
RolluS Posted December 4, 2016 Share Posted December 4, 2016 @electric_vehicle_lover here you go: (tip: picture taken with OpenCamera Android App, macro mode, then cropped) My EUC shop got a sample from here. Link to comment Share on other sites More sharing options...
electric_vehicle_lover Posted December 4, 2016 Share Posted December 4, 2016 Thanks @RolluS. So is the same microcontroller as 30B4 boards. Link to comment Share on other sites More sharing options...
RolluS Posted December 4, 2016 Share Posted December 4, 2016 You're welcome It seem's there is some connectivity for the ship on the board: Link to comment Share on other sites More sharing options...
electric_vehicle_lover Posted December 4, 2016 Share Posted December 4, 2016 Seems the same bluetooth module as on 30B4. What I see as different on that board, are the current sensor ICs that seem to be a "bigger" version probably to handle higher motor currents. Link to comment Share on other sites More sharing options...
RolluS Posted December 4, 2016 Share Posted December 4, 2016 I've bought the BT module separatly. The architecture seems very close Link to comment Share on other sites More sharing options...
lizardmech Posted December 5, 2016 Share Posted December 5, 2016 On 12/4/2016 at 3:21 AM, Lz Lee said: we are thinking of selling 40A for super users. But we dont have suitable motor to match 40A. Only 500W motor is not enough for its performance. Does microworks make the motors? There's a few easy ways to make much more powerful motor than existing designs, but would need a supplier to build parts. Link to comment Share on other sites More sharing options...
Carlos E Rodriguez Posted March 23, 2017 Share Posted March 23, 2017 So do they have a 12 MOS design or not? Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted April 15, 2017 Share Posted April 15, 2017 On 2016-12-05 at 5:20 AM, lizardmech said: Does microworks make the motors? There's a few easy ways to make much more powerful motor than existing designs, but would need a supplier to build parts. What easy ways are there to make much more powerful motors? Larger magnets, wider stator windings? I'm curious how they determine how many batteries to use, how thick the copper wiring needs to be, etc to get the characteristics they want from motors. What makes a 1000w motor different than a 500w? Also some motors have three sets of 3 hall sensors with each group spaced apart. Is that for safety redundancy or was it just an older design that isn't needed any more as three alone is plenty? Link to comment Share on other sites More sharing options...
Carlos E Rodriguez Posted April 16, 2017 Share Posted April 16, 2017 @Hunka Hunka Burning Love. the winding core work like a car cylinders. you fire one, the motor core advances to the nearest magnet and aligns the next core at the right position, the the second core fires to move a little farther forward and align the third core to the next magnet. and it is done in a linear sequence of three 1,2,3 1,2,3 and so on to make the motion or 3,2,1 3,2,1 to go reverse. Now you ask "but we have more than 3 cores and more than three magnets!". Very well. one core is not strong enough to turn the wheel around with enough force so two or three or four cores are wired in series with each phase to make each phase have more power per firing. If you count the number of cores it is a multiple of three always. and Each Hall sensor tells the computer which core is in the right position to fire and achieve the desired direction of motion. Does it make sense. For example let say we want to fo forward. Hall sensor-1 is on because core is in the ideal position for it so the computer will fire 1 then 2 then 3 to go forward. But lets say hall sensor-2 is on the the computer will fire 2 then 3 the 1,2,3,1,2,3 and so on. If Hall sensor 3 is on then it will fire 3 the 1,2,31,2,3 and so on. Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted April 16, 2017 Share Posted April 16, 2017 Would you effecively double the torque capabilities if you had two rows of magnets side by side or half offset and had two sets of stators? Imagine if you took the magnet hub and doubled it up along with a dual stator arrangement. You could fit the same width tire on, but the motor housing would be wider. Or if there is a wider tire available that would protect the motor better. I would imagine that the speed might not be improved, but torque would be doubled? Or say you just used double wide or 1/2 wider magnets and wider stators.... that would be simpler with less to go wrong. How would that affect the motor properties? What makes for 1000w motor versus a 500w? Are there more windings/thicker wire/larger magnets? I remember someone explained that when you design a motor for high speed you have to sacrifice on torque snd vice versa. Is there no way to have the best of both worlds? How about a dual motor design that has a high torque and a high speed side? The controller could vary the power to one or the other side as needed, but I suppose that would create some inter-motor instability? Link to comment Share on other sites More sharing options...
Carlos E Rodriguez Posted April 16, 2017 Share Posted April 16, 2017 You could. When you trade speed and torque, you can get it back with more winding, bigger cores and such. The magnets are important also. Bigger magnets, bigger magnetic force for the stators to pull and push against. You just have to find a combination that meets enclosure maximum enclosure dimensions available, maximum power available, maximum weight allowed. It has to fit, it has to be light, it has to carry its own power and the cost. you can have huge power inefficiencies by increasing the tolerances on the distance between the stators and the magnets, but hat would require perfect wheel balance, stronger assemblies that dont flex and such. But that would increase the cost. Link to comment Share on other sites More sharing options...
electric_vehicle_lover Posted April 16, 2017 Share Posted April 16, 2017 You may like to read Shane Colton documents, as he developed a motor, board controller and firmware. That is very good quality information on his documents!! Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted April 16, 2017 Share Posted April 16, 2017 That guy is amazing! Lots of interesting things to read about... http://scolton.blogspot.ca Link to comment Share on other sites More sharing options...
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