Disc alarm going off

Fin · World Chat Champion Joined: 27 Feb 2016 Karma :

I have a cheap disc alarm and have never had any problems with it but I've never used it at night through a winter. 2 nights ago I woke up at 2am to hear the alarm going off for a few seconds. I wasn't sure that it went off so I looked out the open window for a while to see if anyone was trying to make an escape, I didn't see or hear anything so put on some clothes and went outside.

No one had been to the bike as there weren't any footprints on the grass but then there was also nothing to trigger the alarm.

All I can think of is that it was a rabbit knocking the wheel, a few times...

Like most alarms if you nudge it there will be a little warning beep, if you then hit it again within a few minutes the full alarm will go off.

Today when I went out to the bike the lock was buzzing and the batteries almost dead.

Any ideas what caused the alarm to go off? I'm hoping it was just the batteries going as It's really noisy and could keep neighbours awake (while I sleep through it).

Has anyone else had issues with disc alarms? I know at my college someone had one that would go off when I park my bike or if a fly landed on it but I've always had faith in mine for not going off unless someone's touching my bike.

edit: looks like this one but with a straight key.
https://i.imgur.com/X8uj361.png

ThatDippyTwat · World Chat Champion Joined: 07 Aug 2016 Karma :

The battery is going.

Colder weather makes them perform worse. I have the same, in addition to a number of other chains, locks.

Dave70 · World Chat Champion Joined: 21 Jan 2012 Karma :

I have a disc alarm similar to the one you posted and have experienced the same issue in the past.

I have noticed that in the colder mornings it gets covered in condensation on the outside, so presumably the inside does as well. I put this factor down to the problems I was experiencing.

This could be a completely wrong assumption though but it's been fine on the occasional times I've used it in the warmer months.
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Teflon-Mike · tl;dr Joined: 01 Jun 2010 Karma :

Yup, old batteries and/or cold and/or damp or simply chittychink electrickery.
Snowie has had a couple; did it even with new batteries.
Given that when the house got burgled for keys & I had to go cut all the locks of everything with an angry-grinder and replace; that one didn't even put up a fight... the zink-babbit alloy that only notionally passes for metal, just sort of squeeled a bit and ran for the hills at the sight of power tool!!! Dont even bother buying new batteries; save the money & put it into another 'non-alarmed' discie.. preferably one made of actual propper metal.
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Pjay · World Chat Champion Joined: 18 Jan 2016 Karma :

Maybe the short burst of alarm was a low battery warning?

winz · World Chat Champion Joined: 05 Feb 2015 Karma :

I had that exact one on my bike when it was stolen. Didn't go off and was no deterrent what so ever.
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grr666 · Super Spammer Joined: 16 Jun 2014 Karma :

Xena

/thread
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P.addy · Red Rocket Joined: 14 Feb 2008 Karma :

Fin · World Chat Champion Joined: 27 Feb 2016 Karma :

I know the disc lock is made of cheese, I use it for the alarm, it stops people fucking with my bike and might alert me if someone tries to steal it.

Sound is what will scare thieves where I live, I don't have anything solid and easy to chain the bike to and can't be arsed to get anything either.

I also use my chain and lock on my other bike.

I don't see the point in a "decent" non alarmed disc lock, this is for my NSR where the bike could be lifted.

Thanks for the replies off those who have experienced the same issue.

Teflon-Mike · tl;dr Joined: 01 Jun 2010 Karma :

ThatDippyTwat · World Chat Champion Joined: 07 Aug 2016 Karma :

Fin · World Chat Champion Joined: 27 Feb 2016 Karma :

ThatDippyTwat · World Chat Champion Joined: 07 Aug 2016 Karma :

Dave70 · World Chat Champion Joined: 21 Jan 2012 Karma :

Just a word of advice from someone who did something very silly today.

If you intend using a disc alarm like the one in the OP when out and about, make sure you don't leave the key for it at home. Embarassed

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Barnoe · Trackday Trickster Joined: 17 Aug 2014 Karma :

I have the Xena XX14 which is similar
i find if i clean the sensor with a cotton bud every once in a while it stops false alarms.

The sensors react to a moth fart at 2000 paces once dirty..... which means you have run out into the cold in your boxers at 2am!

Even so, disc alarms are a slight deterrent when parking at the shop etc but at home use something better.

I have so much security on mine, friends laugh at me... i dont care.
i had a bike stolen in 1986 and even now i still remember that shit feeling, i would rather go over the top like i have Smile

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