In the interests of stealth, we've seen small packs inserted into frame tubes, and commercial ebike frames are built with a recess or box section to house packs.
On conversions, where possible (hardtails), packs are braced within the frame triangle.
Otherwise, packs are cantilevered from a frame tube. This is obviously not ideal, especially a flat pack or mount against a round tube.
Has anyone built or considered building a pack of cylindrical cells as a (partial) shell directly onto and around a frame tube? Each radial segment would be a parallel string, with multiple "rings" connected in series longitudinally down the frame tube to reach system voltage.
-No cell holders or pack structural members necessary -- strong and light.
-Since the resulting pack would be a simple cylinder, it would be easy to protect with a sectioned fiberglass tube.
-The frame tube would look much oversize, but otherwise the lines of the frame would be maintained -- not stealth, but not conspicuous.
-Since the pack is built onto the frame, removing it would not be possible without complete disassembly. But since every cell is accessible, replacement of a single cell would be easy. Battery theft would also not be a concern.
Thoughts?
How would you make parallel and series connections?
On conversions, where possible (hardtails), packs are braced within the frame triangle.
Otherwise, packs are cantilevered from a frame tube. This is obviously not ideal, especially a flat pack or mount against a round tube.
Has anyone built or considered building a pack of cylindrical cells as a (partial) shell directly onto and around a frame tube? Each radial segment would be a parallel string, with multiple "rings" connected in series longitudinally down the frame tube to reach system voltage.
-No cell holders or pack structural members necessary -- strong and light.
-Since the resulting pack would be a simple cylinder, it would be easy to protect with a sectioned fiberglass tube.
-The frame tube would look much oversize, but otherwise the lines of the frame would be maintained -- not stealth, but not conspicuous.
-Since the pack is built onto the frame, removing it would not be possible without complete disassembly. But since every cell is accessible, replacement of a single cell would be easy. Battery theft would also not be a concern.
Thoughts?
How would you make parallel and series connections?