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Steverino, I'd stick with the Abus 59. I believe there is no better lock. But I'd combine that with a disc alarm, and remove the front wheel, and or, attach it to the rear wheel for most secure locking.

Of course this is my recommendation for locking up in London. It would not need to be as severe in Durham for example.

Thanks GA2G, I'll stick with it then, and add a disc alarm if I find a cheap good one.

I think its large 'back to the future' factor must be a bonus though!

Great Scott Marty! It does look nice, but I'd be worried that it would attract attention in the wrong way "Look at that funny thing, it doesn't look strong, let's have a crack at it" - rather than "Jeez, look at the size of that lump of metal, it'll take ages to get through that." It doesn't look like the shape of the casing allows for a particularly thick shackle underneath.

I'd also be concerned that the casing would get tatty of fall off, even if the lock underneath is sound.

I've also seen price suggestions at $150 ( ~ £95), at which point it becomes very likely that there will be many better locks around for the money. For that money you could probably get a couple of very decent D locks, and maybe even accessory locks if you shop around.

ooh i haven't seen any videos, but why not a good idea?

Well it does look like it's made of plastic and chrome - more like an iPod accessory than a security device.

The fact that it's "pick proof" presumably won't help much when someone belts it with a 12lb sledgehammer. Maybe it's stronger than it looks though.

Very useful thread - thanks :)

I'm currently using my old motorbike lock - an Abus Granite Extreme 59 D lock. I got it because with an engine, the weight was a non-issue, and it seemed like the biggest most awkward lump of metal for a thief to get through.

On my cycle, I use it through the rear wheel and the seattube, usally locking througha heavy duty post, or bike rack - also using locking skewers, and a cable lock for the saddle/seatpost and the front wheel. This method seems to fill up the interior of the lock quite well.

I'm just wondering about the break time quoted for that lock @ 2 mins - firstly which tools were used, and secondly, whether that was for 1 or two cuts (it needs 2 cuts to remove the lock due to the twin locking and square profile.) -ie. is it 1 minute per cut or 2?

I'd love to see a destruction test of a granite extreme 59 - not knowing the details worries me slightly.

From what I can see, a square profile 16mm shackle has slightly more material than a round profile 18mm, so I'm just wondering which is in principle stronger, assuming the same materials. I've also read comments that 16-18mm is "essentially uncroppable".

I would consider changing to a mini fahg, but I'm not sure if there are significant benefits, and whether I would have more trouble finding suitable locking sites with the smaller locking area. I'm also pretty broke at the moment (all the more reason not to get a bike nicked though...)

thanks,
steverino