A heavy duty hook,chain, block and tackle that I used to lift a 1300cc engine out of a mk2 Ford Escort.
I dont know what it weighed but it was awful. I borrowed it from a mate.The block was in one Karrimor pannier while the chain ran out of the bag, over the rack and down into the other pannier with the hook. My big mistake was trying to ride it. I got about 10 yds when the horrendous rear whip got the better of me and flung me into the road. When some bloke passing by had stopped laughing, he helped me lift the bike up and I walked the rest of the three miles home.