EBMX

eBMX
Participants	User:buzz
Skills
Status	Planning
Niche	Mechanics
Purpose	Fun
Tool	No
Location
Cost
Tool category

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What

A study and try-out of the current available techniques for propelling bikes with electricity. This has nothing to do with my lack of car :)

Basically I want to convert a normal bike to a nice electric one, and aim to find the cheapest/easiest/most current way to do so.

Features that would be nais :

• Regenerative braking
• Cruise Control
• Rear wheel propulsion, bike trailer ready
• Gears :)

Not much in the case of innovation, but a fun project and something not many people consider to be an option.

Buildlog

Woop, motorkit and batteries arrived \o/.
Dropped of bicycle & motor at local bikeshop for them to respoke the wheel with motor inside. Hopefully done in ~2 weeks.

Meanwhile i'll wait for BMS before starting to make a batterypack.

--buZz (talk) 17:37, 30 May 2017 (CEST)

Just mathed max speed (at 300 RPM as stated on aliexpress and with 0 friction or losses (unlikely))

(300*(508*3.1415)/1000/1000)*60

300 rpm
508mm wheel diameter (20*25.4)

--buZz (talk) 10:29, 30 May 2017 (CEST)

Charger ordered \o/

• https://nl.aliexpress.com/item/Xin-Sheng-Li-2a-36-V-10-series-of-42-V-Lithium-Battery-Charger-Lithium-Battery/32712762232.html

--buZz (talk) 01:47, 28 May 2017 (CEST)

Annnd ordered a pile of batteries:

• 20x Samsung INR18650-35E 3450mAh - 10A
• 2x Samsung INR18650-29E 2900mAh - 8.25A (for welding practise)
• 2 meter of nickel strip 10mm*0.15mm

--buZz (talk) 00:22, 28 May 2017 (CEST)

Ordered a 10S BMS to make my own battery.

• https://nl.aliexpress.com/item/E-bike-36V-lithium-ion-battery-BMS-3-7V-cell-10S-36V-37V-40A-BMS-with/32771635628.html

--buZz (talk) 13:08, 26 May 2017 (CEST)

• 

Added a bananasaddle \o/

--buZz (talk) 13:39, 25 May 2017 (CEST)

Ordered a conversion kit, almost the cheapest i could find :)

• https://aliexpress.com/item/24V36V48V-250W-Electric-Bicycle-Front-Wheel-Conversion-Kit-With-LCD-display-E-bike-Front-Brushless-Hub/32791789080.html

--buZz (talk) 02:02, 19 May 2017 (CEST)

• 

Scored a free BMX to start, and looking at (cheap chinese) parts to order.

--buZz (talk) 19:58, 15 May 2017 (CEST)