I ordered a long-john (namely, a Bullitt Clockwork) and - the official folding seat/composite honeycomb bottom being way too expensive for my budget, I am now in the process of building a passenger seat for my son (1,5 years old).
I wish my seat to:
- Be safe
- Be cheap to build
- Have the possibility to tilt backwards (or anyway having it designed in such a way that when my son falls asleep during longish rides his head won't bounce all over the place).
My first impulse was to build something akin to the box the bakfiets comes with:
But while being cheap to build and relatively safe (the kid is enclosed in a solid structure) there is no support for the neck/head, nor the seat can be reclined.
My second idea was to still build the box but enclose/fix on the bottom of it a forward-facing child seat designed for cars. Not owing a car, I'm not sure of how that works, but I know as a fact that my friends children routinely sleep in them.
However this solution is relatively expensive/heavy, and in addition I either fix permanently the seat to the box (and then I need to always shelter the bike from rain/snow) or I make it releasable (and then I'll have to carry it around if I don't want to get it stolen / be soaked by rain).
Finally, the last idea I had was to mould a box-cum-integrated-seat in FRP (fibre reinforced plastic, think "fiberglass"). I have some experience with previous projects and the end result is light and durable, but getting it done is a labour-intensive process.
So, my question is: does anybody have an alternate idea on how I could build the seat for my son? Or an off-the-shelf solution that won't cost me an arm and a leg?