Hello everyone,
inspired by Daxxie (https://endless-sphere.com/forums/viewtopic.php?f=6&t=96212 ) and JPC6000 (https://endless-sphere.com/forums/viewtopic.php?f=28&t=95671&hilit=bafang+ultra) I decided to build something similar. I have a nice workshop with machines etc. as I have been restoring classic motorcycles for decades (here's a link to a build thread of my seeley racer: http://forums.sohc4.net/index.php/topic,171911.0.html).
Why an E-bike? Same reasons as many of my age have: some overweight, need of physical training...
The building is always the fun part, therefore I made myself a jig and startet to build an aluminum-frame from scratch
Main profiles are standard 80x30mm U-profiles with 2,5mm thickness, no fancy 6066 or something. Seat tube came from a german supplier, head is 6061, made on the lathe.
I wanted flexibility with the battery, therefore the huge "box" as frame-triangle.
View attachment 1
The battery is from ali, 14s7p (52V, 19,2Ah)
Here is the raw frame after welding ( I did heat treat it already)
Edit:
Geometry is
Reach 440mm
Stack 626mm
Head Tube Angle 66,5°
Seat Tube Angle 74°
Wheel Base 1246mm
The forks is a DNM USD-8, damper DNM RCP-2 and the rear suspension parts came from an old Intense M1 downhill-bike. I know that this taiwanese damping stuff is heavier than Fox or suchlike, but I had to be careful with the costs for the project. I tested the forks and the damper in my old Cannondale Prophet and they worked really fine, both are good to tune and sturdy.
The whole process went fine until here. Now I'm struggling with the electrics
Without the great work of Daxxie and JPC6000 I wouldn't come far, that's for sure. I will post details later...
inspired by Daxxie (https://endless-sphere.com/forums/viewtopic.php?f=6&t=96212 ) and JPC6000 (https://endless-sphere.com/forums/viewtopic.php?f=28&t=95671&hilit=bafang+ultra) I decided to build something similar. I have a nice workshop with machines etc. as I have been restoring classic motorcycles for decades (here's a link to a build thread of my seeley racer: http://forums.sohc4.net/index.php/topic,171911.0.html).
Why an E-bike? Same reasons as many of my age have: some overweight, need of physical training...
The building is always the fun part, therefore I made myself a jig and startet to build an aluminum-frame from scratch
Main profiles are standard 80x30mm U-profiles with 2,5mm thickness, no fancy 6066 or something. Seat tube came from a german supplier, head is 6061, made on the lathe.
I wanted flexibility with the battery, therefore the huge "box" as frame-triangle.
View attachment 1
The battery is from ali, 14s7p (52V, 19,2Ah)
Here is the raw frame after welding ( I did heat treat it already)
Edit:
Geometry is
Reach 440mm
Stack 626mm
Head Tube Angle 66,5°
Seat Tube Angle 74°
Wheel Base 1246mm
The forks is a DNM USD-8, damper DNM RCP-2 and the rear suspension parts came from an old Intense M1 downhill-bike. I know that this taiwanese damping stuff is heavier than Fox or suchlike, but I had to be careful with the costs for the project. I tested the forks and the damper in my old Cannondale Prophet and they worked really fine, both are good to tune and sturdy.
The whole process went fine until here. Now I'm struggling with the electrics
Without the great work of Daxxie and JPC6000 I wouldn't come far, that's for sure. I will post details later...