Building an Offroad Fixed Gear on the Cheap

Theres been an old steel, triple triangle (not GT though), MTB/trekking bike parked in exactly the same place (not locked, just standing), for a week now. By the nusery my nippa goes to. 90% sure its been dumped.

Really want to to take it home and corrupt it into a fixie mud bike. But its blatently way too big for me :(

Kinda sucks that no-one esle round my parts has bothered to do it TBH.

there is no way you live in London. would be gone in seconds, even if it is rubbish.