I've been researching middrive conversions for quite some time, but still haven't seen many people with middrives in carbon frames.
Is this generally a bad idea, even with a modern trail bike (stump fsr carbon)? Or is it just complicated to pull off and can work well with proper engineering? How would you mount it - 2 piece brackets that go around the frame and tighten or screw through the frame?
This build is giving me some confidence, that with sturdy mounting you can pull it off even jank/ziptie style: https://imgur.com/a/GGiIx#OGRNqfT
Any feedback is welcome, I'm currently deciding between an alloy and carbon stumpjumper, and 2-3kg weight saving on an ebike would be quite appreciated, I just don't want to snap it in half. Attached is my initial idea of how I can distribute enough of the forces and weight to not damage the frame, of course, once I decide on the bike, I'll make a proper 3D model as they have different geometries.
To get the sense of power I'm aiming for.
APS 8072S 50kv - 80mm motor, I will limit the current via the VESC to not overheat it, and implement active cooling if necessary.
ESCape by Stewii from esk8 builders.
12S 10Ah setup - 2x Multistar 10Ah 6S. I will try my best to fit this inside the frame, but I have have to, I'll sacrifice the looks and mount it on the outside.
Currently looking at planetary gearsets to bring the cadence to <80, though I might make a custom chain reduction.
Is this generally a bad idea, even with a modern trail bike (stump fsr carbon)? Or is it just complicated to pull off and can work well with proper engineering? How would you mount it - 2 piece brackets that go around the frame and tighten or screw through the frame?
This build is giving me some confidence, that with sturdy mounting you can pull it off even jank/ziptie style: https://imgur.com/a/GGiIx#OGRNqfT
Any feedback is welcome, I'm currently deciding between an alloy and carbon stumpjumper, and 2-3kg weight saving on an ebike would be quite appreciated, I just don't want to snap it in half. Attached is my initial idea of how I can distribute enough of the forces and weight to not damage the frame, of course, once I decide on the bike, I'll make a proper 3D model as they have different geometries.
To get the sense of power I'm aiming for.
APS 8072S 50kv - 80mm motor, I will limit the current via the VESC to not overheat it, and implement active cooling if necessary.
ESCape by Stewii from esk8 builders.
12S 10Ah setup - 2x Multistar 10Ah 6S. I will try my best to fit this inside the frame, but I have have to, I'll sacrifice the looks and mount it on the outside.
Currently looking at planetary gearsets to bring the cadence to <80, though I might make a custom chain reduction.