I need a good horn!

[XmisterIS]

I'm toying with two ideas:

1) Air Zound.

2) Car horn and 12 battery (DIY job).

WRT option 2 - has anyone here tried this? I certainly won't want to haul a big old car battery or even a motorbike battery around with me but I'm wondering if there are any small and lightweight rechargeable batteries out there that would be able to power a car horn?

A penny for your thoughts ...

 

[Jezston]

AirZound! Don't car horns need compressed air?

 

[ASC1951]

Don't car horns need compressed air?

No. The design is the same as a speaker.

 

[Jezston]

Hmm, my engineery knowledge is pretty rusty, but I guess you'd need a fair bit of power, which might explain why I've heard that those electric bike horns you can get are a bit pants.

Be interested in hearing how you get on if you do have a go, but AirZounds do weigh virtually nothing.

 

[Soltydog]

I had one of THESE years ago & it was quite loud

 

[XmisterIS]

I just did a bit of rummaging on Google and it seems that to get a 139dB car horn working, not only do you need 12V, but you also need at least 4A! The small 12V batteries produce about 40mAh - so you would get about 3 seconds out of a car horn before the battery went flat!

Air Zound it is then ...

 

[HLaB]

I'm toying with two ideas:

1) Air Zound.

2) Car horn and 12 battery (DIY job).

WRT option 2 - has anyone here tried this? I certainly won't want to haul a big old car battery or even a motorbike battery around with me but I'm wondering if there are any small and lightweight rechargeable batteries out there that would be able to power a car horn?

A penny for your thoughts ...

hackbike 666 has been running a car horn system for years, you could try pm'ing him.

 

[Scoosh]

How about one of those cannister-with-a-horn-on-top things used by sports clubs instead of a gun ? I know sailing clubs often use them and I think some of them are pump-up re-chargeable (otherwise they'd need an awful lot of the cannisters during a season of athletic endeavour ).

 

[zoxed]

1) Air Zound.

2) Car horn and 12 battery (DIY job).
...

3) Air-canister horn (often used at sport events). Main problem is fitting it to the bike and activating it, although some people have managed to rig up remote operating cables.

 

[Globalti]

You can get Fiamm "snail" type horns in 6 volt versions, you could rig these up to a 6v motorcycle battery, which is about the size of a box of chocolates. They are pretty damned loud.

 

[swee'pea99]

I used to have difficulty waking up in the morning, and rigged up a motorbike horn to a 12v adaptor and a mains time-clock. The noise one of those buggers makes in an enclosed space has to be experienced to be believed. That's one alarm you don't sleep thru'....

 

[Scoosh]

Hmmmmm ..... thinks student children .......

 

[cyberknight]

+1 on the airzound, cheap and easy to set up

Saved my bacon a few times

 

[Crankarm]

 

[Crankarm]

I'm toying with two ideas:

1) Air Zound.

2) Car horn and 12 battery (DIY job).

WRT option 2 - has anyone here tried this? I certainly won't want to haul a big old car battery or even a motorbike battery around with me but I'm wondering if there are any small and lightweight rechargeable batteries out there that would be able to power a car horn?

A penny for your thoughts ...

Right where's your penny?

My first thought. What has brought about your need for a horn, a loud horn?

How do you intend to pay ?