Secondary Locks

I haven't used it, but our forum boss was mighty impressed by it.

It will keep professional thieves away, but the thieves that don't realise how secure atomic22 locking is, will try hard to break it, and probably ruin the frame/forks in the process. From a distance, it's not as obvious as a U-lock.

Atomic22 doesn´t answer my e-mails. I´m not sure if they really want to sell their stuff. It´s a pity ...

For me, personally, I'd want obvious physical deterrents, and security hub skewers don't guarantee that. Unless it's a u-lock or something obvious, chancers and amateurs would try attacking the bike and damaging it. No point protecting mangled forks and a wheel IMO.

Ok, I haven't done this for a long time, but after 4 years, I've added a new section here.

Its U-shaped disc locks. From 14mm (stated) to 16mm alarmed monstrocities.

Handy for locking rear or front wheel to frame. Or crank to frame. Although it cuts down on space, the very best ones are still very heavy. But potentially, one could use a 16mm and a 14mm pair of disc locks, and still be as securely protected as with any of the main locks....in the Locks That Work thread.

Any thoughts on the Otto lock as either a secondary lock (suspect not in a high risk area) or a cafe stop lock. It has the advantage of lightness for the latter and can be positioned to minimise open space in the lock.

Because it looks insignificant, I think it will practically invite attacks, and thereby the risk of damage to bikes. I wouldn't recommend it. Part of lock security is the psychology that tells thieves that a lock looks strong. The opposite would apply here.

Did I miss something or were all the cutting methods they showed bolt cutters or similar. Surely with a flexible material like that the vulnerability would be to a shear force (or I would at least like to see that disproved before buying). Could be potentially be ok for a touring lock / cafe stops.

Thanks for the opinion. I hadn't considered the inviting attacks issue; I'd rather avoid that.

It does look a little more substation than the thin cable cafe stop locks though. I still haven't got a lock I can lug around on long rides that would cope with me being out of sight for a short time which limits the available stopping points.

@Cranky

https://www.amazon.co.uk/Kabrus-Alarmed-Motorbike-Lock-Motorcycle/dp/B00331QXJK

https://www.lfgss.com/conversations/150684/#post792503

Might give you an alternative solution.....maybe combined with the Otto Lock.

Special thanks again to @clefty

Thanks @GA2G. That looks interesting I'll look into this and have a good read through the post by @clefty.

This forum is full of excellent information and advice.

Thanks again GA2G. I have read through the conversation started by Clefty and have a few concerns about the suitability of the lock but will probably get one or the Krabus. Whilst doing an internet search for the Xena lock I came across the following post which shows a broken Xena disc lock.

https://mandrado.wordpress.com/2013/02/24/don-t-buy-xena-disc-lock-with-alarm/

The poster lost a motorbike and there is little detail, however I imagine motorbike thieves go a little better prepared/equipped than the average bike thief given the value of the items. Still it's a little disconcerting.

Edscoble's comment about covering the sensor is also a little worrying with no lock to try on the bike. I imagine the Krabus and similar locks work in the same fashion and will have the same issue. Maybe an alarmed padlock would be better but do they have a similar sensor?

Looking at the Krabus disc lock on Amazon I read the questions; one query concerns the use of the item on bicycle discs to which someone has answered "dont know if it would fit bike .. wouldnt think it would be of much use anyway as bike could be lifted and carried away ". I assume this poster is poorly informed as wouldn't the shaking created during carrying set the alarm off.

I assume from your post (#134) that these are still the best option as far as alarms go.

Bar battery life I think I prefer the Krabus for the locks levels of sensitivity as opposed to the Xena's war on the ears for 10 seconds as a warning which seems to be the big complaint in the conversation started by Clefty.

ignore

^Hmm, don't know what I posted there.

Does anyone here use a motorbike disc lock around the wheel and frame? What sort of size are they inside, typically?

do pragma make a secondary lock? also atomic22 went bust so may need to be removed from the list

Thought I'd post a mini review, since these two threads are getting older now and I don't know how up to date the info is.

Background:
It’s normally been quite safe to leave our bikes unlocked at work, but couple of unlocked bikes have gone walkies recently. Suspect it’s got something to do with the large number of contractors working on site at the moment. I felt like I needed a basic mini D for mine. It didn’t need to be anything seriously secure, just good enough to prevent chancers and not easily cut like a cable. For anyone reading in the future, it's currently post-Brexit and Covid period, and all prices seem to be heavily inflated due to supply and demand.

Choices were between:
-Classic Kryptonite. I already have two of these and they're a bit too big to take to the shops without a bag. The lock mechs are good but they're quite spindly.
-Kryptonite Mini Evo. Got one of these and love it, but it's quite heavy and currently EXPENSIVE (see above)
-Unbranded £10 eBay special. Probably would be fine, but not many mini D's.
-Option 4 - branded version of the above

Weighing up option 4, the OnGuard Mini series looked pretty good. £18-£20 delivered depending on shackle length. Shackles between 140mm, 175mm and 190mm from what I could work out. I went for the middle one, which I felt was just big enough to get around a bar and the frame. £17.99 delivered from Hopkinsons Cycles. Funny to then come here to post this and see it in the recommended list. That makes me happier.

Review:
-Initial impression is that it is very light for its size.
-It has a lot of sharp burrs on the plastic moulding, so I spent a little while tidying it up with a Stanley knife blade.
-The lock mech is what they call the Z-Cylinder (a slider/sidebar lock) which offers improved pick resistance, but nowhere near as good as the Kryptonite locks which require a special tool to pick.
-It comes with 5 keys. As with the lock itself, the keys are covered in sharp burrs on the plastic and at the end of the key itself. I'll have to deal with the key because it'll put a hole in my pocket. Presumably, they've cut corners here to keep the cost down.
-The shackle is secured in the lock barrel at both ends.
-It has an adjustable frame hanger which initially looks better than the wedge-type hanger the Kryptonite comes with, which easily gets jammed in.
-Maybe my only worry is the core inside the main lock tube looks like it's plastic. This is probably why it feels so light next to the Kryptonite Evo Mini. It won't be a problem for me, but it leaves it susceptible to plumbing torch attacks. I can't find the LockPickingLawyer/BosnianBill video now, but I'm sure I've seen one where they burn out the core and the lock basically drops to bits. I don't think it's going to happen to me at work or at the shops, but it's worth knowing.

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