Clunkerbike

This is the beast I'll be building as the weather in Melbourne begins to improve with the impending spring, the Triceratops Two. For now, T-One is DOA because I think there will be less tweaking involved to get the tracking aligned on T-Two and the cornering will be as tight as a road bike under Cadel Evans' captaincy. The preliminary OpenSCAD code for the design resides on my GitHub.

I'm wondering if building a conventional tadpole trike, with "sports car" steering geometry is the right way to go. For the last few days I've been trying to reverse engineer the lean steering of an AR-3 trike, yeah, maybe for shits and giggles, but seeing the basic frame parts "move!" Wow! Update: I'm now seriously considering this steering pattern for my trike build. A decision that pretty much throws out everything but the parts list. Update 2: I'm sold! This is it. Not shown is how to lean the front wheels, but that's just horizontal kingpins at the end of the transverse beam and tie rods from the chassis to an upright wheel boss at each end of the transverse beam that pivots on the horizontal kingpins. In theory. Still some work to do, but I've cracked it! This is parametric, too. I enter a turning angle and it calculates the pitch of the transverse beam in order for it to stay horizontal. I might be making some design changes before ...

I bought a welding machine, a handyman grade, solid state, gasless MIG welder, to be precise. I already have a mini oxy-acetylene rig, too, but I've never managed to get it alight. I think the bottles may have been empty from the start. ¯\_(ツ)_/¯ Yeah, I could spend 2 grand on a KMX Kolt and get a fully functioning 1x8 speed recumbent trike with a warranty, but I think I can spend a grand all up building something similar and get 2 items crossed off the bucket list - own a trike and build some sort of bike/trike thing. Maybe it won't be as good as the KMX, maybe it'll be better. It'll be better in one way, at the very least, "I built this." Enter "Triceratops One." (That's it, up top, sitting on the baseboard for the jig I'll be building it on.) "Expense" is my main motivation. AU$2k isn't expensive as bikes and trikes go, but I'm a retiree on a "super" pension and I'd rather try and keep a bit of that cash i...