I'm looking for a 'tank' to test the performance of a small electric outboard, (PWM speed controllers, batteries, hydrodynamic slipstreaming mods etc) so am thinking of a circular tank, possibly about 3' / 90cm in diameter so that I can set the outboard off to one side and get the water circulating around the tank, rather than just turbulating in it (as when in a dustbin etc). It would also need at least around 18" deep sides to stop the water climbing / splashing out.
So, after a bit of Googling I came across the IBC water containers and 1) wondered if anyone knows where there might be one that still holds water (at least over the lower half) near Nth London that someone might like to see the back of and 2) if you think it might be suitable for my needs please (or if not, why not etc). If not there seem to be plenty on eBay cheap enough.
Would it being nearly square (all be it with round corners) with maybe something in the middle to ensure water actually flows 'round' the container be free moving enough or do you think I'd need to fit a round liner inside it?
If the bottom (inside) isn't flat or couldn't easily be made flattish (from a water flow POV) could I use the top half upturned instead (I could fit my own drain cock etc).
Any other ideas around the above welcome of course. ;-)
Cheers, T i m