- http://i306.photobucket.com/albums/nn27 ... C00080.jpg[img
The wires going in and out of the unit split. It,s allowed the output wires to make contact and argh, nearly caught fire whilst attached to me bike.
Warning Oxford Oximiser
Warning Oxford Oximiser
This is what happened to me. Check yours ? BAtch No :PQR02744 2007
-
bikerpiker
- Posts: 1823
- Joined: Sun Mar 23, 2008 9:59 pm
- Location: Ayrshire - Scotland .
-
clayderman
- Posts: 253
- Joined: Sun Jul 15, 2007 3:59 pm
- Location: Surrey
Now I'm confused 
if you were so concerned that took a picture of the lead coming out of it when the outer protection had come off but the inner insulation was still intact, why did you do nothing about it and continue using it?
Also the lead that goes off to the bike is still wrapped up with the freezer bag tie thing round it, the leads should always be extended fully so air can flow around them and keep them cool. We nearly had a fire at work due to someone not extending an extension lead fully, so in future always unwrap it fully.
if you were so concerned that took a picture of the lead coming out of it when the outer protection had come off but the inner insulation was still intact, why did you do nothing about it and continue using it?Also the lead that goes off to the bike is still wrapped up with the freezer bag tie thing round it, the leads should always be extended fully so air can flow around them and keep them cool. We nearly had a fire at work due to someone not extending an extension lead fully, so in future always unwrap it fully.
-
RedStormV
- Posts: 1372
- Joined: Thu Jun 07, 2007 9:41 pm
- Location: West Yorks (Bronte Country) - Home of the Negro Lesbian Cornet Players
- Contact:
Not wanting to cast aspersions, but looks to me to be the result of operator error matey 
I think Georg Ohm and Michael Faraday might have summat to say about it if they were still here
Perhaps you have wound the mains and 12v leads too tightly around the unit when not in use? It's always good idea to leave a bit of a loop first to prevent too much strain on the wires as they exit the unit.
Pretty sure if you sent unit or photos to Oxford they'd say something similar.
As for the nicely 'bundled' 12v wire, it is bad practice to use any electrical wire while it is either coiled or 'bundled' together, especially mains wire (extension leads etc) which should be totally un-coiled before use.
This is partly because of the risk of induction / resistance, creating heat, which in turn melts the insulation which causes short circuits and ultimately 'Bang' or flames.
All may not be lost though, it looks like it may have been caused by the 12V side shorting out.
Cut the 12v wire back to leave as long an 'insulated' tail from the unit as possible. Plug the unit into mains and check for 12 or 13V DC output from the unit with a meter or 12V bulb.
As long as you're getting DC out, you should be able to connect some fresh 12V wire to the o/p and still use it. Ideally use soldered and insulated joints or use some terminal or 'domino' block.
Oh, and tape the mains input side up to protect them also.
*
I think Georg Ohm and Michael Faraday might have summat to say about it if they were still here
Perhaps you have wound the mains and 12v leads too tightly around the unit when not in use? It's always good idea to leave a bit of a loop first to prevent too much strain on the wires as they exit the unit.
Pretty sure if you sent unit or photos to Oxford they'd say something similar.
As for the nicely 'bundled' 12v wire, it is bad practice to use any electrical wire while it is either coiled or 'bundled' together, especially mains wire (extension leads etc) which should be totally un-coiled before use.
This is partly because of the risk of induction / resistance, creating heat, which in turn melts the insulation which causes short circuits and ultimately 'Bang' or flames.
All may not be lost though, it looks like it may have been caused by the 12V side shorting out.
Cut the 12v wire back to leave as long an 'insulated' tail from the unit as possible. Plug the unit into mains and check for 12 or 13V DC output from the unit with a meter or 12V bulb.
As long as you're getting DC out, you should be able to connect some fresh 12V wire to the o/p and still use it. Ideally use soldered and insulated joints or use some terminal or 'domino' block.
Oh, and tape the mains input side up to protect them also.
*
Actually guys, It was working ok.
The damaged lead on the ouput side had split ( not noticing ) and this allowed the cover of the inner wires to split and make contact to which caused the short circuit. This then melted the lead and short circuited on the metal frame of the bike.
Plumes of smoke, sh1t meself as only just repainted sodding bike.
The unit was never hung , or the cables stretched beyond there limits.
The damaged lead on the ouput side had split ( not noticing ) and this allowed the cover of the inner wires to split and make contact to which caused the short circuit. This then melted the lead and short circuited on the metal frame of the bike.
Plumes of smoke, sh1t meself as only just repainted sodding bike.
The unit was never hung , or the cables stretched beyond there limits.
-
bikerpiker
- Posts: 1823
- Joined: Sun Mar 23, 2008 9:59 pm
- Location: Ayrshire - Scotland .
A lesson learned 
Ive got one o those,it's fine ,but must admit,i never completely unravel the cables, but do make sure cables are not bundled tightly together.
I dont,as yet,have electricity in my garage,so charger is used in house, overnight to charge battery when required Will make sure they are unravelled now
Ive got one o those,it's fine
,but must admit,i never completely unravel the cables, but do make sure cables are not bundled tightly together.I dont,as yet,have electricity in my garage,so charger is used in house, overnight to charge battery when required
Will make sure they are unravelled now -
RedStormV
- Posts: 1372
- Joined: Thu Jun 07, 2007 9:41 pm
- Location: West Yorks (Bronte Country) - Home of the Negro Lesbian Cornet Players
- Contact:
Timbo wrote:Induction causes the heat, rise in heat causes rise in resistance, higher resistance causes even more heat as charger still trying to draw same current etc etc thermal runaway, fire!!
How eloquently and susinctly put Tim
I thought about typing a fuller explanation, but thought that would suffice, as the end result is the same, combination of the 2 causes bang / fire
I also knew there'd be some geek out there who knew (or remembered) far more about the Electrical and Electronic Principles than I .... Hated that subject a college!
By the time I'd typed that lot, Clayderman had beaten me to the punch
p.s. only posted this cos you is a girly SWAT
Hey bikerpiker i,m happy knowing that you now are aware of the possible prob with this product.
Funny, but thats what I told the plonker from oxford, it might be possible that some one could be using this in there house at nights while they sleep.
At least it brought it to some ones attention how some products are not as good as there made out to be and are easily damaged .
Funny, but thats what I told the plonker from oxford, it might be possible that some one could be using this in there house at nights while they sleep.
At least it brought it to some ones attention how some products are not as good as there made out to be and are easily damaged .