New Litelok X locks “offer unparalleled resistance to angle grinders”

Agree - I'd go with your idea combined with an addition - the plug-in chain lock.  That just stops the nuisance of kids wheeling it down an alley then dumping it.  As you say maybe a (cheap-ish, cable) second lock for the front wheel.  After all if the owner *has* used a hundred-pound lock, maybe what's locked is valuable?

Edit - this chap agrees with you.

For best effect the simple frame lock should be combined with a simple Dutch bike (English Roadster).  So that's heavy and if a step-through is awkward to carry.  Not "cool" (mostly...).  Ideally should be old and beat up.  Or a "bike-shaped-object" e.g. bottom of the range hard-tail mountain-style bike.

If you're a thief with transport / are looking to grab several bikes every day I imagine you move around to maximise your rewards - the above won't cover your costs!

It's easy to angle grind a frame lock cut it on the left hand side and the spring pulls the bar back into the lock.

Maybe on some, but I'm told the better ones lock at both ends, so you would have to make two cuts. Depending on how it's mounted, it could be quite delicate manoeuvring a beefy angle grinder in there without slicing the frame.

Never seen one like that but the standard AXA locks i've cut through with a plug in angle grinder loads of times without damaging the frame.(I'll leave you wondering why but i wasn't stealing bikes).

Ha!

Perhaps next we'll see a lock made of Mithril silver. A snip at just under 2 Grand

Given the weight I'd imagine it should be physically tough at least.  Always a compromise - the SAF lock is supposed to be very grinder-resistant but is massive and extremely heavy.

It's all moot 'till the LockPickingLawyer's had a chance to poke it.  Previous investigations have found locks where to get it down to a price point the "Mithril" can actually can be cut with cheap tin snips (or maybe simple croppers).  Or the Mithril's good but the lock is made out of marshmallow, or held in place with plastic, or secured by screws hidden under plastic...

Has he had a go at an abloy sentry?

Don't think so but he's done the "Enforcer" and I believe that has a more difficult / specialised core.  There are some videos out on the Sentry which appear to show it would go with "the pick which Bosnian Bill and I made".

The one to go for - given the tone on here - would clearly be the skunk lock, he's got a video on that one too.  Or maybe a Squire Stronghold and a motorbike chain - although that is apparently vulnerable to rifle-calibre armour-piercing bullets if you can get enough ammo.

Thing is, LPL himself uses a bike lock that he can pick within seconds. Because as he knows, the scum don't pick locks, they use angle grinders.
https://youtu.be/SpVOTEOMRuE

Indeed and that's why he's a good source - he understands the trade-offs and can point at the flawed examples.  Those are not always obvious to the rest of us.  For me it's a case of "all other things being equal".  I'm really paying to "keep honest people honest" with a side order of "if some opportunist (armed with the internet and stolen tools but not an angle-grinder) sees my bike, they'll go elsewhere".

After destroying one lock plus its hype LPL did point out that it could have "better than nothing" uses e.g. stopping a kid grabbing one and riding off.  I believe that has happened to a certain pro!

My first D lock (Kryptolok, 1988) was over 10% of the cost of the whole bike, even after adding a rack and mudguards. At £280, you might well go for this one for an e-bike. I suspect most £2800 road bikes are locked with much less but only left in public at cake time.

It's worse than that - I believe that stuff was called unobtanium. A classic case of blowing the budget on the special effects, and forgetting to buy a script.....

Zazz53 wrote:

I have wondered why someone can't invent a lock which is hollow and filled with a superglue that is air and/or heat activated.  It could ruin angle grinders before the lock was compromised.  If you added a permanent and traceable dye to the mix then you might be able to use it in evidence as well.  

A better tactic is for the police (or what remains of them) to use GPS tagged honeypot bikes. Put them in well known thievery hotspots, wait for it to be nicked and then go catch whoever has the stolen bike.

They do and then, as reported in Cycling Weekly a long, long time ago in what seems like a galaxy far away, the CPS slap money laundering charges on the mother's/girlfriends into whose bank accounts the n'er do well paid the funds received from selling the bikes on. That put a smile on my face but was of course in the days when we were encouraged to try fresh ideas and had a few pennies to spend on them. 

jaymack wrote:

They do and then, as reported in Cycling Weekly a long, long time ago in what seems like a galaxy far away, the CPS slap money laundering charges on the mother's/girlfriends into whose bank accounts the n'er do well paid the funds received from selling the bikes on. That put a smile on my face but was of course in the days when we were encouraged to try fresh ideas and had a few pennies to spend on them. 

In theory, it's an easy crime to foil as there are well known places that the thieves operate whereas house burglary would be harder to stop as the police wouldn't know where the burglars would be striking next.

With the police being deprived of resources, I wonder if a collective could work? Maybe get a bunch of cyclists to donate some cash and that cash would then be spent on obtaining some honeypot bikes, GPS tags and employing some people to do the legwork. Of course, there would still need to be police involvement unless some kind of vigilantism was used.

If we're happy with vigilantism, then an alternate scheme would be to obtain honeypot bikes, explosives and remote triggers. Stuff the explosives into the bike tubes/tyres and detonate some time after the bike is stolen. Maybe have it on a timer so that it explodes five minutes after the bike is stolen.

However, it's generally frowned upon by law experts to be setting traps for people and certainly I don't believe that property is more important/valuable than people's lives. It's a fun idea, though.

hawkinspeter wrote:

[...] certainly I don't believe that property is more important/valuable than people's lives.

Communist!

EDIT News just in suggests that communists may hold that certain state property is more important/valuable than people's lives.  Sorry Ivan, it's expensive to get another tank...

I think that once you're down to one key it's time for a new lock.

Bungle_52 wrote:

I think that once you're down to one key it's time for a new lock.

Completely agree - now if you can tell me how to re-aquaint a 19 year old with the common sense he was born with...............

A fair point. Patience is the only answer I'm afraid.

Gimpl wrote:

All fine and dandy until you lose the key like my Son did the other week outside the gym!

Rather worryingly I managed to cut through his with a pair of tin snips!!

That reminds me, I do need to get another spare key for my Litelok when I get back.

It's a wearable one ... I was pretty much at the tube station heading for the Eurostar to start my current trip when I realised it was still round my waist, it is currently being looked after by my local pub

Not sure about these wearable ones since Rendell pointed out the damage to yourself on coming off.

hirsute wrote:

1.9 kg !!

That's how much the Hiplok D1000 weighs.  Having said that, I was glad this morning that I had one.  My bike was untouched, but...

Second Hiplok user here. Only had it a few months. It's not got the longest range and is quite hard to secure to objects, so tend to use in conjunction with a litelok.