This week is all about test riding and figuring out where the frame still tries to misbehave. On top of that, I’ve started sketching a new head lug for the indoor frame.
So, how’s the testing going so far? I’ve put about 10 km on the bike now, and honestly, it’s going pretty well. There’s still no rear brake on this version, which makes riding it… let’s call it “character-building.” The old cassette paired with a new chain is rattling a bit too, so a new rear wheel has officially made it onto the shopping list.
Aside from that, the ride feels surprisingly smooth, and the frame actually seems to be getting stiffer as time goes on. I’m guessing the resin just needs a bit more curing time than the datasheet promises. I’ve tried a few bits of off-road, some cobblestones, and mostly regular asphalt.
My biggest fear was (and honestly still is) the strength of the 3D-printed lugs. But so far, they’re performing way better than I expected.
Meanwhile, the list of things I want to improve has become impressively long. I’m even considering starting the whole design from scratch again, but with everything I learned from Prototype 0.2.
The dropouts definitely need a better mounting system. I’m thinking about laser-cut reinforcements that I can embed into the print to help spread the load and make everything more reliable. A chain tensioner would also be a welcome upgrade.
The seat lug needs a rethink too: I want a system that lets me adjust saddle height without turning the whole area into a mechanical puzzle. I also want the two bamboo tubes there to sit closer together, because there’s still a bit more flex than I’d like.
The head lug is in decent shape, though I might make it a little larger to give the bearings more breathing room and simplify the assembly.
But first: the indoor frame. That’s the main priority for now. Besides, it’s way too cold outside to ride anyway.