Good Lock ?

[burncycle]

Im looking for a good lock for my ebike (when I get it ).
Im thinking of either the............

Abus Diskus 20/70 Chain Lock

or

ABUS Granit 54 X Plus U Lock

Which is generally prefered, D lock or chain?

Also I've heard a few people saying in the forums about electronic alarms.
I've seen these.............

Chaperone® Bike Alarm | Bicycle Security

Bicycle Alarms - Bicycle Alarm

Anyone got one?

 

[flecc]

I don't know those two locks, but generally a D lock is less easy to cut than a chain lock, so preferable. Many of us in here think two locks are best if the bike is to be left for any length of time.

Those two alarms both look a bit more robust than the one I have, but all these suffer from using a PP3 9 volt battery. At best they last 3 months, but perform poorly when the weather is very cold and can fail much earlier, the PP3 suffering more than larger batteries in this respect.

Many e-bikes have larger section and/or oval frame tubes so the alarm clamps might not fit. In general the triggering is only reasonably effective when very high on the bike to get the maximum reading from a movement. I have mine mounted on the handlebar stem and it's just about sensitive enough there.
.

 

[burncycle]

I don't know those two locks, but generally a D lock is less easy to cut than a chain lock, so preferable. Many of us in here think two locks are best if the bike is to be left for any length of time.

Those two alarms both look a bit more robust than the one I have, but all these suffer from using a PP3 9 volt battery. At best they last 3 months, but perform poorly when the weather is very cold and can fail much earlier, the PP3 suffering more than larger batteries in this respect.

Many e-bikes have larger section and/or oval frame tubes so the alarm clamps might not fit. In general the triggering is only reasonably effective when very high on the bike to get the maximum reading from a movement. I have mine mounted on the handlebar stem and it's just about sensitive enough there.
.

Are you able to tell me which alarm you use Flecc?

 

[flecc]

It's the Ducharme Canadian one, but the original site vanished and only Amazon had them at that time. I think those other two look better though, particularly the red job, though perhaps not a thing of beauty.
.

 

[keithhazel]

Many of us in here think two locks are best if the bike is to be left for any length of time.


.

--------------------------------------------------------------------------
call me a pesimist but i leaving i tend to fold it down and use my three chain locks, keeping as little free play from the ground fixed object i fasten it to as possible,the chain locks are weaved in and around all movable parts befor locking ends.....terrible when you feel this insecure isnt it... ..yet i was doing an exit survey yesterday in sainsbur's and several young men on bikes rode up to the shop, propped it up to the fence...no chain or anything and came and did some shopping. ..the bikes in question where not rust buckets either ...even if the bike wasnt brand new or valuable they would stil;l have the annoyance of walking home...but do they care...not at all !!!!..why is it the rough looking ones who look like they are rouges and would steal a bike in the first place dont worry, yet us honest ones have to take precautions....

 

[john]

Perhaps they think that if their bike gets nicked they will just nick someone else's to replace it