The picture shows roughly the split of the weight of the unicycle. Shows that the motor is the most heaviest component. The most efficiently the motor can be designed the better.

The picture shows roughly the split of the weight of the unicycle. Shows that the motor is the most heaviest component. The most efficiently the motor can be designed the ...

The battery casing should not be biting into the battery pack. This can puncture the battery pack over time leading to potential fire.

The battery casing should not be biting into the battery pack. This can puncture the battery pack over time leading to potential fire.

This is the amount of dust that was found on the ninebot after using it at Jaaga farm for a month. The board should be designed to take this amount of abuse.

This is the amount of dust that was found on the ninebot after using it at Jaaga farm for a month. The board should be designed to take this amount ...

Patent by Janick and Marc Simeray - http://www.google.com/patents/US20090266629
Patent by Solowheel - https://www.google.com/patents/US20110220427

Patent by Janick and Marc Simeray - http://www.google.com/patents/US20090266629
Patent by Solowheel - https://www.google.com/patents/US20110220427

First place to look is the Github repo.
https://github.com/KiCad/kicad-library

Others
https://github.com/octopart/CPL-KiCad-Library
http://www.kicadcloud.com/
http://kicadlib.org/
http://kicad.rohrbacher.net/quicklib.php
http://smisioto.no-ip.org/elettronica/kicad/kicad-en.htm
http://library.oshec.org/
http://gramlich.net/projects/pcb_footprints/index.html
http://cyclerecorder.org/footprintbuilder/
http://embeddedprogrammer.blogspot.in/2012/06/3d-and-footprint-libraries-for-kicad.html
http://www.jave.de/docs/kicad/image2module.html
http://projects.qi-hardware.com/index.php/p/xue/source/tree/master/modules

First place to look is the Github repo.
https://github.com/KiCad/kicad-library

Others
https://github.com/octopart/CPL-KiCad-Library
http://www.kicadcloud.com/
http://kicadlib.org/
http://kicad.rohrbacher.net ...

Might need a lot of this soon.

http://www.banggood.com/Airwheel-Electric-Unicycle-Bumper-Strip-Wheelbarrow-Protective-Strip-p-957046.html

Might need a lot of this soon.

http://www.banggood.com/Airwheel-Electric-Unicycle-Bumper-Strip-Wheelbarrow-Protective-Strip-p-957046.html

https://www.facebook.com/groups/ElectricUnicycle/766725430092089/?ref=notif¬if_t=group_comment_follow

https://www.facebook.com/groups/ElectricUnicycle/766725430092089/?ref=notif¬if_t=group_comment_follow

When you run out of power, user should able to replace battery pack. This will allow us to have lesser battery pack inside the device. This will also reduce initial cost of the device.

If the user goes on long distance, the user can carry multiple battery pack in the backpack and swap batteries as they run dry.

When you run out of power, user should able to replace battery pack. This will allow us to have lesser battery pack inside the device. This will also reduce initial ...

In case of tire puncture, wheel should be easy to remove

In case of tire puncture, wheel should be easy to remove

https://www.facebook.com/groups/ElectricUnicycle/763508877080411/

https://www.facebook.com/groups/ElectricUnicycle/763508877080411/

The STM32 board however has only one 16 bit PWM timer, so I wonder how the brushless motor is being controlled

The STM32 board however has only one 16 bit PWM timer, so I wonder how the brushless motor is being controlled

towards the end of the video the person drops the unit by more than a meter.
https://www.youtube.com/watch?v=sy0tMrEEE18

towards the end of the video the person drops the unit by more than a meter.
https://www.youtube.com/watch?v=sy0tMrEEE18

Kaifu Cheng dropped a ninebot and damaged it. That guy shared all the pictures of the same over here.
https://www.facebook.com/photo.php?fbid=10152795161882933&set=oa.755744061190226&type=1&theater

Image credits to Kaifu Cheng

Kaifu Cheng dropped a ninebot and damaged it. That guy shared all the pictures of the same over here.
https://www.facebook.com/photo.php?fbid=10152795161882933&set=oa.755744061190226 ...

According to Austin Marhold, the power he consumes per km is 14wh/km.

The number of Wh you need are determined by how far you go and how fast your wheel is (you can go further on a faster wheel as your fatigue is based on hours not km).

According to Austin Marhold, the power he consumes per km is 14wh/km.

The number of Wh you need are determined by how far you go and how fast your ...

The image attached shows the relation between lean distance and radius of the wheel. It shows that the more the radius of the wheel, the more you will have to lean forward to overcome an incline.

x - lean angle
r - radius

Why is the torque equated?
the torque that the wheel produces creates a reaction force on the frame of the unicycle. Taking free body diagram of the frame, this torque is balanced by the moment due to the rider forward

Why is this important?
This is another constraint for wheel diameter.

Credits - John Chew( from Facebook unicycle group)

The image attached shows the relation between lean distance and radius of the wheel. It shows that the more the radius of the wheel, the more you will have to ...

The entire unicycle is modular. Following are possible modules
Wheel dia - Swap wheel dias
Motor capacity
Battery capacity and chemistry
Seat post
Lights - headlight and rear brake light
Fancy lights
bluetooth connectivity
Environmental sensors?

The entire unicycle is modular. Following are possible modules
Wheel dia - Swap wheel dias
Motor capacity
Battery capacity and chemistry
Seat post
Lights - headlight and rear brake light
Fancy lights ...

Useful for choosing our wheel diameter - http://www.municycle.com.au/selecting_a_unicycle_page.html

Useful for choosing our wheel diameter - http://www.municycle.com.au/selecting_a_unicycle_page.html

Test

Test

The shell is made of polycarbonate - This is the one that gives it its ruggedness.

The shell is made of polycarbonate - This is the one that gives it its ruggedness.

Really nice review and comparison on solowheel and gotway 14"

http://forum.electricunicycle.org/topic/43-review-of-the-gotway-14-mcm-from-the-perspective-of-a-solowheel-owner/

Really nice review and comparison on solowheel and gotway 14"

http://forum.electricunicycle.org/topic/43-review-of-the-gotway-14-mcm-from-the-perspective-of-a-solowheel-owner/

Owner/Fan/Aftermarket base – There is a large aftermarket and technically-savvy community that self-supports the GW14. This is in part because of the ease of user access to the Gotway’s internals and relative simplicity in have a modular electrical design. Additionally the relatively low initial cost gives greater courage to more folks to try to crack it open for self-service

taken from - http://forum.electricunicycle.org/topic/43-review-of-the-gotway-14-mcm-from-the-perspective-of-a-solowheel-owner/

Owner/Fan/Aftermarket base – There is a large aftermarket and technically-savvy community that self-supports the GW14. This is in part because of the ease of user access to the Gotway ...

We have a buyer in India who is primarily handling the purchases in China. He also handles shipping to India. Also AliExpress is also a pretty easy place to buy things. Just that they take about 2 weeks to get the stuff to you. If you can wait Aliexpress works.

We have a buyer in India who is primarily handling the purchases in China. He also handles shipping to India. Also AliExpress is also a pretty easy place to buy ...

http://www.airebike.com/
SBUV3 - http://focusdesigns.com/
Solowheel - http://inventist.com/index.php?option=com_content&view=category&id=8&Itemid=116
Airwheel - http://www.airwheel.net/x3.html
Mobbo - http://mobbo.co/

http://www.airebike.com/
SBUV3 - http://focusdesigns.com/
Solowheel - http://inventist.com/index.php?option=com_content&view=category&id=8&Itemid=116
Airwheel - http://www.airwheel.net/x3.html
Mobbo ...

http://transistor-man.com/flying_nimbus.html#hubmotor_wheel

Submitted by Anool

http://transistor-man.com/flying_nimbus.html#hubmotor_wheel

Submitted by Anool

http://hackaday.com/2014/09/01/thp-semifinalist-the-medicycle/

http://www.instructables.com/id/Raleigh-Chopper-inspired-self-balancing-scooter/?ALLSTEPS

The MediCycle seems very relevant to conditions in India. Every day during my commute in Mumbai, I see Ambulances stuck in traffic.

http://hackaday.com/2014/09/01/thp-semifinalist-the-medicycle/

http://www.instructables.com/id/Raleigh-Chopper-inspired-self-balancing-scooter/?ALLSTEPS

The MediCycle seems very relevant to conditions in India. Every day during my commute in Mumbai ...

The link is not active. Found the link on a web archive - http://tlb.org/eunicycle.html.

Submitted by Karthik V

The link is not active. Found the link on a web archive - http://tlb.org/eunicycle.html.

Submitted by Karthik V

Quickly collect all the data on wheel dimensions of popular cars, scooters, and bikes in India. We know these wheels work on Indian roads.

This should give us some sense of what dimensions of wheels work on Indian roads.

Quickly collect all the data on wheel dimensions of popular cars, scooters, and bikes in India. We know these wheels work on Indian roads.

This should give us some sense ...