Elektrickery help required

  • Thread starter Thread starter Davo
  • Start date Start date
Dellortoman said:
You've most likely got a short in only one of the new horns. You'd be dead unlucky to get a short in both of them.

I dunno where you bought them from or whether it's practical to return the faulty one for replacement. Sometimes not worth the hassle if you bought them on ebay from Timbuktu.
If you want to fix it yourself, Voxbell horns come apart reasonably easily by drilling out the rivets. It's probably just a bad bit of insulation or an errant wire touching the inside of the case.

I'd be interested to know how well the 1000cc kit works on the Lemon.

Cam
Click to expand...

Tried them separately and still blew the fuse.

I actually wonder if they are 6v horns as the originals are marked ****90/12v and the new horns are ****90. Certainly am not going to spend time drilling rivets out at the moment, just don't have the time.
 
I suppose 6V is possible, A lot of Italian bikes were 6V, such as Ducati singles for example. Even so, I still wouldn't expect the resistance to be low enough to blow a fuse. I've used 6V horns on a 12V system and they still work. They're just a lot louder on 12V  :D

Don't chuck the faulty horns away. Put them on the shelf until you feel motivated to investigate their internals.
 
Well there you go, if anyone is still interested.

The Voxbells I have are 6v, tested resistance is less than 1/2 that of my original horns. Rigged up a bench test and ran them in series rather than parallel and the worked perfectly.

Also, the new pair arrived from Mario at Thunderbikes in a box marked 12 volt. They are identical to the other new pair that I have in every way, including the fact they are also 6v horns unless run in series.

So, will take Mario's horns back and let him know they are actually 6v, and will rewire the horn circuit to run the horns in series rather than parallel.

 
 
Just wondering, will the horns work if wired in series; don't they have contacts that are energised by an electromagnet and rely on the make and break of the contact to produce sound, won't the two working in series cause all sorts of wierd noises?
 
Terry Dymond said:
Just wondering, will the horns work if wired in series; don't they have contacts that are energised by an electromagnet and rely on the make and break of the contact to produce sound, won't the two working in series cause all sorts of wierd noises?
Click to expand...

They work perfectly.

 
Dellortoman said:
Just use a bigger fuse and go for maximum noise  :D
Click to expand...

They were blowing a 30amp fuse when bench tested in parallel, ran perfectly through a 5amp fuse when in series.
 
Davo said:
They work perfectly.
Click to expand...
Glad to hear it Davo, discuussed it at work with an electronics engineer and he agreed that it could cause wierd effects. But if they are working, all's good. Will give him a rev-up tomorrow, bloody engineers, what would they know, as bad as mechanics :D :D
 
I'd put a soundbite of them working up on the forum for you to hear, but they are so loud I can't bear to be in the shed when they are switched on.
 
Ha ha.

Cleaned the rust off my tatty old horns and can now read all the writing on the front

Clearly marked "12 volts" and "MOD 90/12"

new horns just have "MOD 90"
 
You must log in or register to reply here.
Back
Top