-I agree with other commenters that the headtube steelwork is a bit bulky. I think the frame design might be stiffer and more elegant if the two plywood elements actually join round the headtube, leaving out the steel.

-I’m thinking another evolution of this design would address the steel plate/bolted construction round the joins. I think that’s going to be a weak spot in time, as the bolts will eventually loosen in the plywood. Perhaps the bolts could be made more secure by shrink-fitting a steel bush into the frame and then bolting into the bush with thread-lock compound (like you would use on motorbike bolts).

-Having made sculptures in the past using laminated plywood, I reckon you could add aesthetic interest, and remove some weight from the frame, by chamfering/rounding the frame edges. I like the effect of the  varying widths of the laminates this gives.

Not intending to sound over-critical, just my 2p on possible evolutions to explore. I totally admire the idea and the commitment required to produce this prototype. Well done.

Oh my good lord, you actually said that…these are obviously the best parts he could afford for this concept, so any comment about them is pretty much irrelevant. And yeah, all these design pundits going on and on about design…whatever next? You’d almost think that they would just shut up about all these things that don’t meet/match your personal aesthetic…how inconsiderate.!