Research Stage 1 19/11/18 - 25/11/18:
I began by researching the different types of e-bikes and the history of e-bikes overall. After settling on the friction drive as the variant which best fits my project, I looked into the existing friction drive offerings, both D.I.Y. and commercial. I found friction drive designs from the late 1800s until now. I particularly noticed the recent trend in popularity of small friction drive kits being released, often through crowdfunding. I think this recent popularity is due, at least partly, to the recent decrease in price in battery and motor technology. These offerings are still quite expensive for many, as a result, some detailed, open, D.I.Y. versions have arisen. I have found these to be very useful the research for my project as well as the commercial versions.
Starting References:
http://easykitsport.blogspot.com/2013/02/sport-1st-image-shows-main-frame-body.html?view=mosaic
Metal 3D Printed RC Friction Drive - Development / Build Log:
https://endless-sphere.com/forums/viewtopic.php?t=91293
Standard formula for Calculating E-Bike Range:
https://endless-sphere.com/forums/viewtopic.php?t=93794
RC-ESC vs E-Bike controllers:
https://endless-sphere.com/forums/viewtopic.php?t=23882
E-bike motor/ESC problem:
https://endless-sphere.com/forums/viewtopic.php?t=87146
Research Stage 1:
https://www.instructables.com/id/Bicycle-BoosterPack-a-3D-Printed-Portable-Electric/
Friction Drive New Kepler carbon build:
https://endless-sphere.com/forums/viewtopic.php?f=6&t=74269
Kepler Friction drive comes of age:
https://endless-sphere.com/forums/viewtopic.php?f=28&t=84905
Commuter Booster - <1kg Friction Drive:
https://www.endless-sphere.com/forums/viewtopic.php?f=28&t=22187
UrbaNext: front wheel all in one conversion
https://www.kickstarter.com/projects/934648866/urbanx-convert-any-bike-to-an-electric-bike-in-60
Go-E: A frictiojn roller add-on
Patent no. WO2015005757A1 - Electric friction bicycle drive:
https://patents.google.com/patent/WO2015005757A1/en?oq=e.+WO+Patent+App.+PCT%2fLT2014%2f000%2c010
Relodrive - Middrive conversion:
https://www.german-design-award.com/en/the-winners/gallery/detail/8715-relo-steckantrieb.html
New Approach for an Easily Detachable Electric Drive Unit for … - MDPI:
https://www.mdpi.com/2032-6653/9/3/37/pdf
Notes:
Various references relevant to me for further reading
the EN15194 standard [8] to decide if an electric bicycle is still accounted as such
“Pedalling sensing is possible as the chain movement can be directly sensed at the rear wheel” - [pg.3]
“there is a strong trend towards e-bikes [19] with a compound annual growth rate (CAGR) of 55% in Europe,” - [pg.4]
“y (94.4% in 2014) of the bicycles sold are still non-electric off-the-shelf bicycles [2]"- [pg.4]
" to define a target customer group based on their requirements. It was concluded that an electrification solution is more appropriate for commuters and entry-level leisure cyclists, as other users would be willing to spend higher amounts to obtain a bicycle that is more suitable for their individual applications” - [pg. 5]
PU Wheel Friction Drive E-Bike:
https://www.instructables.com/id/PU-Wheel-Friction-Drive-E-Bike/