pguk wrote:Seriously considering doing this for my next build. I hope the op is able to give some feedback about how it the enclosure copes with frame flex? I run a steel frame trek mtb and a see loads of flex going on between my knees as a motor along. With the rigid mounting method this is all transferred to the enclosure- how has it faired over time? Have any cracks appeared?
Sorry my late answer.
No cracks have appeared. The bicycle endured a couple of falls/crashes but on low velocity which I believe were stronger stress tests of the construction than a potential bending of the frame.
I believe also that you can't call the mounting completely rigid, as the holes I drilled through the enclosure are granting some clearance around the screws. I also installed some rubbery spacers on the inside of the enclosure, the spacer tubes between frame and enclosure are some sort of hard plastic.
Actually I can't really imagine a deformation of the frame which could harm the enclosure if you (idealized) look at it as a triangle. the bending then must happen in tube direction and can probably be neglected. But maybe I am totally wrong here.
Then I have to say also I use this bicycle nearly every day but not on a rough terrain (city).
Hope this helps a little.