It's essentially a framework of 22mm overflow pipe and fittings (except that you can't get stopped ends, so I 3D printed some

The foam 'pool noodle' is actually 20mm ID 70mm OD pipe insulation. The central box is a bit of 6mm laser cut liteply.
Motors are a pair of 2826/10 1400Kv motors and a pair of 30A esc's from HK for the Bushmule twin foamy. They're reversing - which was one of the points I wanted. All running off a ubiquitous 3S/2200. Rx is an el cheapo orangerx 618XL v2 and one of the brilliant OrangeRx Tx6i transmitters. A bit of mixing for everything on the RH stick and Robert's your auntie's husband.
This all started because I picked up a real bargain at one of our local B&B's - an eflite Carbon Z Cub - 2.1m - only 1 flight under it's belt too. I've always fancied a go at floatplane flying - bottom of my garden is literally in the river Forth


Anyway, it works fine on wet garden grass - still to get a soaking on the real stuff

Neil