"dUTCH" LOCKS

[QUIST]

Are the locks known as Dutch locks any better than U bar locks -I say this as local criminals seem to have found a way of busting open good quality U bar locks in a busy local supermarket car park.

These are the ones which are usually fitted to the rear brake nut and bolt

Thanks in advance

[mjr]

If both are used properly, probably not. Horseshoe/dutch/nurses locks are convenient because they're always on the bike, but only a cable or chain locks the bike to an immovable object. They also had their "Kryptonite Bic moment" a few years ago - newer models are OK but:
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Can you tell any more about how the D-locks are being busted open, please? Are there any common features in the busted locks, such as O-keys, the keyhole being on one end, thin bars, the D not being filled, or the lock being movable too close to the floor?

I combine a D-lock through seatstays, back wheel and parking stand with a cable lock through vulnerable parts, sometimes alarmed if I'm likely to be within earshot. It won't stop them, but I might get there in time!

[[XAP]Bob]

They're virtually unknown to uk thieves...

[Elizabethsdad]

I have two bikes with these locks - A Rose bike from Germany and a Dutch Bakfiets Long John. The lock on the Bakfiets is made by AXA and has a socket on the side which an optional chain or cable can be fitted to allow locking to a stand. I recently got the heavyweight chain option which according to makers info rates as 5/6 for security and is approved by insurers. It does make for a neat tidy and easy to use locking system - certainly less faff than using a separate D lock which I had been doing. I think someone did try to take the Bakfiets once when it was parked in our driveway, as I came out to find it on its side - the stand is too big and stable for it to have just fallen over. It was only on the frame lock then which I guess the potential thief didn't realise until they tried to move it at which point they clearly gave up. The size and weight of this bike makes very unwieldy to move with an immobilised wheel.

[[XAP]Bob]

I used two of these on a bike that I knew would be left around - left it outside a station for several days quite happily - both wheels were rather firmly attached to the frame, the top tube was wrapped into a thick cable lock with a sheffield stand, no way to get anything in there.
The bike itself was also somewhat tatty - different coloured cranks etc..