yep, just had a customer report the same thing & yep, the same thing it was
they just don`t make things like they used to
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| Sudden coil failure https://www.ausmini.com/forums/viewtopic.php?f=2&t=75074 |
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| Author: | smac [ Wed Jan 18, 2012 3:17 pm ] |
| Post subject: | Sudden coil failure |
I've had 'tired' coils before, that needed replacing, however I've just experienced very sudden failure. Driving along, constant speed of 80kph, started missing for about 10 seconds then dead. Multimeter shows dead secondary winding. Coil is less than 6 months old, maybe a 1000 k's. Anyone had this? Just bought a dud, or something can cause it? Running 45D electronic dizzy. |
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| Author: | Fiji [ Wed Jan 18, 2012 3:18 pm ] |
| Post subject: | |
Coil type? |
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| Author: | smac [ Wed Jan 18, 2012 3:53 pm ] |
| Post subject: | |
Couldn't tell you you the brand - some generic type one I bought when I was running a pulsar dizzy so 2 or 3 ohm on primary (I forget which) standard 'can' style coil. |
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| Author: | Hanra [ Wed Jan 18, 2012 3:59 pm ] |
| Post subject: | |
Secondary O/C? |
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| Author: | smac [ Wed Jan 18, 2012 4:18 pm ] |
| Post subject: | |
Yup. |
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| Author: | TheMiniMan [ Wed Jan 18, 2012 4:29 pm ] |
| Post subject: | |
yep, just had a customer report the same thing & yep, the same thing it was they just don`t make things like they used to
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| Author: | Wombat [ Wed Jan 18, 2012 6:09 pm ] |
| Post subject: | |
I always maintain that solid state devices ( and a coil is pretty "solid state") will either fail the first time it is turned on or the first time it is allowed to run "hot" ie an extended length of time. - after that it will last nearly indefinitely - only third party items will cause failure like a geko getting in the works. |
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| Author: | smac [ Wed Jan 18, 2012 6:32 pm ] |
| Post subject: | |
Wombat wrote: I always maintain that solid state devices ( and a coil is pretty "solid state") will either fail the first time it is turned on or the first time it is allowed to run "hot" ie an extended length of time. - after that it will last nearly indefinitely
Well, I guess this is your first exception. Coil has had plenty of heat cycles, and went bang under very average conditions. Annoyed the hell outta me, first time in 20 odd years of driving the things that a mini has ever left me stranded on the side of the road. Seriously. |
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| Author: | Wombat [ Wed Jan 18, 2012 6:38 pm ] |
| Post subject: | |
Voltage regulator working OK - no sharp spikes coming off the alternator ? no shorts somewhere causing voltage fluctuations? but then a dry solder joint or bad crimp in the coil could have let go. |
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| Author: | smac [ Thu Jan 19, 2012 5:05 am ] |
| Post subject: | |
Wombat wrote: Voltage regulator working OK - no sharp spikes coming off the alternator ? no shorts somewhere causing voltage fluctuations?
Yeah anything's possible I guess. I'll dig through the parts bin and carry a spare for a while and see how it goes. |
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| Author: | drmini in aust [ Thu Jan 19, 2012 6:41 am ] |
| Post subject: | |
I have seen 2 GT40-R coils fail when used in points systems with no ballast resistor. They got hot... then no worky properly. Gafmo's was one can't remember who had the other (maybe it was CD?). However, they do run fine with a Pulsar electronic dizzy, and stay cool. |
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| Author: | smac [ Thu Jan 19, 2012 9:22 am ] |
| Post subject: | |
Ya but remember this was with an electronic dizzy. I had a poke in the cupboard, have found 4 old standard coils (not tested yet). I've emailed the guy I bought dizzy from to see what he says the resistance should be. |
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