Andrew Storlie
1 mW
- Joined
- Apr 13, 2016
- Messages
- 13
Ok this is my first post, bare with me as im new to ebikes but i do have a decent amount of electrical knowledge.
By next summer i want to have built a full ebike
I plan to use a trek marlin 7 with a 21" frame and 29er tires
I need help/advice on what parts to get.
I want to use a single rear hub motor that will get me up to about 50mph maybe little more. I plan to build my own battery packs using 3.7v 25,200mah cells (i want long long run times)
I know i want a sine wave controller that can put out about 30-35amps
I live in a desently flat area so i know a hub motor will do.
These are the parts ive KINDA put together for a build
Any advice on motors, controllers all that stuff is helpful
Bike: trek marlin 7
Hub motor: http://m.ebay.com/itm/36-80V-Ebike-Scooter-Brushless-Gearless-Brushless-Motor-Hub-Motor-Up-To-2500W-/162002124910?nav=SEARCH
Controller: NEED TO FIND
Batteries: http://www.batteryspace.com/polymer-li-ion-cell-3-7v-12-6-ah-8570170-2c-46wh-25a-rate---ul-listed-un38-3-passed-dgr.aspx
No need for lcd screen or anything. Just half twist trottle
My math... the motor listed says 410rpm at 36v so roughtly 11.38rpm per volt. At 66.6v (18s) i should get 758.5rpm at full throttle. A 29er tire is 7.3ft circumstance so full trottle would be ~63mph no resistance so i would assume about 50mph in real life flat ground... am i right or way off.
Idk about all the motor specs and what not so if someone can help with that too... very helpful thx in advance.
My budget is 2500ish, can be more... for everything including the $700 bike.
All advice will be noted as im a real noob and i want to make something that will last and i can ride everyday
By next summer i want to have built a full ebike
I plan to use a trek marlin 7 with a 21" frame and 29er tires
I need help/advice on what parts to get.
I want to use a single rear hub motor that will get me up to about 50mph maybe little more. I plan to build my own battery packs using 3.7v 25,200mah cells (i want long long run times)
I know i want a sine wave controller that can put out about 30-35amps
I live in a desently flat area so i know a hub motor will do.
These are the parts ive KINDA put together for a build
Any advice on motors, controllers all that stuff is helpful
Bike: trek marlin 7
Hub motor: http://m.ebay.com/itm/36-80V-Ebike-Scooter-Brushless-Gearless-Brushless-Motor-Hub-Motor-Up-To-2500W-/162002124910?nav=SEARCH
Controller: NEED TO FIND
Batteries: http://www.batteryspace.com/polymer-li-ion-cell-3-7v-12-6-ah-8570170-2c-46wh-25a-rate---ul-listed-un38-3-passed-dgr.aspx
No need for lcd screen or anything. Just half twist trottle
My math... the motor listed says 410rpm at 36v so roughtly 11.38rpm per volt. At 66.6v (18s) i should get 758.5rpm at full throttle. A 29er tire is 7.3ft circumstance so full trottle would be ~63mph no resistance so i would assume about 50mph in real life flat ground... am i right or way off.
Idk about all the motor specs and what not so if someone can help with that too... very helpful thx in advance.
My budget is 2500ish, can be more... for everything including the $700 bike.
All advice will be noted as im a real noob and i want to make something that will last and i can ride everyday