U-lock or Disc lock?

[tommyardin]

[quote author=celticdog link=topic=23101.msg268551#msg268551 date=1506034689]
[quote author=Slaninar link=topic=23101.msg268532#msg268532 date=1506007909]
[quote author=tommyardin link=topic=23101.msg268421#msg268421 date=1505844252]
Back it up with a chain and a BIG bright coloured good quality padlock on the rear wheel if its being left for any length of time, it doesn't really have to be a super heavy duty chain because it someone is going to cut it with a 18volt battery powered disk cutter they will whether it is a 8mm link or a 15mm link, but it is a visual deterrent to the little foc pigs who want to go joy riding. Make sure the chain is of a length that it cannot be laid on the ground as it is difficult to cut a hanging chain with a hammer and chisel. Always use the steering lock.
There is no way you will stop someone nicking your pride and joy if they are determined but you can make life difficult and that will stop the opportunist thief. 

In my knowledge and experience, there is a difference between an 8 and a 15 mm thick link. There is also difference between well hardened steel and cheaper, softer one.

The main breaking point, so to say, is about 12 mm of well hardened steel. From that thickness, it is very hard to cut it with tools that fit under one's jacket to stay invisible. Also, that is the thickness that requires more than a few seconds with a battery run angle grinder - so there will be more noise and light from all the grinding sparks (English term?  :/  ).

No useable system is 100% hack proof, but the goal is to make it more work and more risk for the thieves than the other bikes.

Of course, a garage is much better - out of sight, at least in my country.

Another good thing is being nice to the elderly. Those people NEVER sleep   and will always let you konw if they saw someone suspicios, or call you (or the police) if they hear some break&enter noise.



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Yes and the young women of eastern Europe are very hot too!


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A quick one on hardening from what I know is that its better to have just the case hardened because when a fully hardened link is cut with a 4foot bolt cropper the other link shatters from the energy so with a softer inside both sides of the link have to be cut. An 18/19 mm chain is too fat for the largest bolt croppers to get a purchase in the jaws to be able to cut, wich then only leaves other noisy methods
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That exactly right, that is why you do not need a really expensive chain, the cheaper case hardened chains are more resistant to bolt croppers for the very reason you state, and, a hardened and tempered chain  is more resistant to a disc cutter, but with the latest wafer thin steel cutting disks they remove a very small amount of metal, therefore they cut through so much quicker.
15 to 20 seconds will have you through a heavy duty hard chain, and as long as they have everything else in place for a quick get away before cutting the chain your are not going to be out the front door before your pride and joy disappears for ever 

Most of the scrots (Joy riding opportunists) that are going to pinch your bike are likely to be the cropper brigade and if it looks like too much of a challenge they more on.
The pros out there are going to get it what ever you do.
Just make it look as secure as you can and remember if you buy a 1 kilo heavy duty hardened and tempered chain you also have to carry the foccing thing with you. :rolleyes :eek