crossbreak
1 MW
Hi guys,
since I was disappointed from my 900Watts converted Bafang middrive (as I was from my 500Watts TongXin :? ), I have decided to grip the duck by the balls and push 5kW+ into my second (non-commuting) bike, keeping it simple and go for a single speed setup, for the first time.
Edit: Even with 5kW, i'm still stuck with Middrives and will continues that But I keep the coaxial jackshaft!
I wanna use:
-80cc turnigy rotomax 193KV, terminated in WYE to get it down to 112KV, 80mm PC Fan for cooling (still on its way from china since weeks :?)
-420A 24S ESC from Alien Power Systems (didn't order yet)
-20S/4p 74V/20ah Zippy Compact Lipos (on it's way)
-5amps BMSbattery charger
-2xSmartBMS from BMSbattery, beefed up using 4110 FETs (not modded yet)
-Ardoino Nano V3 Throttle adapter/bike computer, to throttle phase current down to 200amps (selfmade)
- 20x4 characters LCD to display speed, amps, motor temp etc, no buttons or stuff, wanna keep it simple, firmware and daughter-board/ shield-PCB sketch will be posted here
-cheap $2 hall trottle
-2 stage reduction, using a BB-coaxial Jackshaft (or in better terms Jackhub), using 16/76T 8mm chain primay, 18/44T bicycle chain secondary, 11.6:1 reduction
-centurion 26" 4-link fully frame, 100mm travel (front and rear), 26x2,1 tire inch front, 24x2,5 inch tire on the back wheel
-pedal setup: 53T front, 11-34T rear
What I wanna gain:
-Get up 30%hills without pedals Edit: 30degree hills
-35mph+
-good efficiency
-lightweight bike, will keep the huge batt in a huge backpack, I know that it will weight 10kg including BMS & shockproof housing
I'm still not sure weather I should use a bike or RC ESC. If the Alien doesn't do fine, I'll send it back. I have some modded 12FET KU123 controllers for testing, hope the 80CC wont melt it too soon.
This is what it should look like in the end. My former bafang build shows where the motor should fit in (still the same frame), but the drive will be different, like shown in the CAD picture.
What are your opinions? anything I should change before I start?
This is build thread, not scientific, so I wont be in a snit if you guys fool around or post OT stuff this time
since I was disappointed from my 900Watts converted Bafang middrive (as I was from my 500Watts TongXin :? ), I have decided to grip the duck by the balls and push 5kW+ into my second (non-commuting) bike, keeping it simple and go for a single speed setup, for the first time.
Edit: Even with 5kW, i'm still stuck with Middrives and will continues that But I keep the coaxial jackshaft!
I wanna use:
-80cc turnigy rotomax 193KV, terminated in WYE to get it down to 112KV, 80mm PC Fan for cooling (still on its way from china since weeks :?)
-420A 24S ESC from Alien Power Systems (didn't order yet)
-20S/4p 74V/20ah Zippy Compact Lipos (on it's way)
-5amps BMSbattery charger
-2xSmartBMS from BMSbattery, beefed up using 4110 FETs (not modded yet)
-Ardoino Nano V3 Throttle adapter/bike computer, to throttle phase current down to 200amps (selfmade)
- 20x4 characters LCD to display speed, amps, motor temp etc, no buttons or stuff, wanna keep it simple, firmware and daughter-board/ shield-PCB sketch will be posted here
-cheap $2 hall trottle
-2 stage reduction, using a BB-coaxial Jackshaft (or in better terms Jackhub), using 16/76T 8mm chain primay, 18/44T bicycle chain secondary, 11.6:1 reduction
-centurion 26" 4-link fully frame, 100mm travel (front and rear), 26x2,1 tire inch front, 24x2,5 inch tire on the back wheel
-pedal setup: 53T front, 11-34T rear
What I wanna gain:
-Get up 30%hills without pedals Edit: 30degree hills
-35mph+
-good efficiency
-lightweight bike, will keep the huge batt in a huge backpack, I know that it will weight 10kg including BMS & shockproof housing
I'm still not sure weather I should use a bike or RC ESC. If the Alien doesn't do fine, I'll send it back. I have some modded 12FET KU123 controllers for testing, hope the 80CC wont melt it too soon.
This is what it should look like in the end. My former bafang build shows where the motor should fit in (still the same frame), but the drive will be different, like shown in the CAD picture.
What are your opinions? anything I should change before I start?
This is build thread, not scientific, so I wont be in a snit if you guys fool around or post OT stuff this time