Mutant Clone owners warning
- Thread starter Mark
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gords1001
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Forgive me for rolling around on the floor laughing.
I have one of the same batch as the one that sparked all this off........
The venting issue is the same on ANY mechanical mod, point cell vents at mod vents, ensure things are adjusted on the mutant (the switch design incorporates a throw adjustment, there must be a touch of space between the contact and the delrin).
The mutant clone in question is as vented as any other mod I have cast an eye over, but it is imperative in any mod at all that the cells positive post (and thus cell vents) are as close to the mods vents as possible, cells swell before they vent. That swelling can close the cells body tube against the mod tube and close off the cell vents from the mod vents.
I can assure you if I had any questions I wouldn't be using the device myself, but I would say the main issue is people not knowing what actually happens if a cell vents.
The other obvious point is buy good cells from a trusted vender, coil within their continuous current limits and do not fuck about with insulators and switches unless you truly know exactly what you are doing.
I have one of the same batch as the one that sparked all this off........
The venting issue is the same on ANY mechanical mod, point cell vents at mod vents, ensure things are adjusted on the mutant (the switch design incorporates a throw adjustment, there must be a touch of space between the contact and the delrin).
The mutant clone in question is as vented as any other mod I have cast an eye over, but it is imperative in any mod at all that the cells positive post (and thus cell vents) are as close to the mods vents as possible, cells swell before they vent. That swelling can close the cells body tube against the mod tube and close off the cell vents from the mod vents.
I can assure you if I had any questions I wouldn't be using the device myself, but I would say the main issue is people not knowing what actually happens if a cell vents.
The other obvious point is buy good cells from a trusted vender, coil within their continuous current limits and do not fuck about with insulators and switches unless you truly know exactly what you are doing.
Chegs
Veteran
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I wish the vaping world would use the term "thermal runaway" rather than "vent". 1, "thermal runaway" is more descriptive of what is actually happening. 2. "vent" sounds too much like arse.
But if you're like me and type 1 fingered, the best term to use is the shortest.
Doodlebug
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- Sep 6, 2012
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Hi, all,
Sorry for the long absence. Struggling to find time for ANYTHING at the moment! *sigh*
Anyhoo, we did some testing on the Mutant Clone, and have published the results on our blog: Battery venting and mod design 2 | ECITA Blog
As we've said in the blog, we are doing further tests, with a view to finding out what WILL work safely for these types of mods, in the event of the battery going into thermal runaway (which can happen to any battery, even really good ones. A dead short or a short circuit will do what it will do to the chemistry in the battery no matter how well made it is).
This is no kind of witch hunt; we simply want to do what we can to make vaping as safe as it needs to be so that EVERYONE can enjoy it, irrespective of whether they have a working knowledge of battery safety, electronics, chemistry, or anything else.
Cheers,
Katherine
Sorry for the long absence. Struggling to find time for ANYTHING at the moment! *sigh*
Anyhoo, we did some testing on the Mutant Clone, and have published the results on our blog: Battery venting and mod design 2 | ECITA Blog
As we've said in the blog, we are doing further tests, with a view to finding out what WILL work safely for these types of mods, in the event of the battery going into thermal runaway (which can happen to any battery, even really good ones. A dead short or a short circuit will do what it will do to the chemistry in the battery no matter how well made it is).
This is no kind of witch hunt; we simply want to do what we can to make vaping as safe as it needs to be so that EVERYONE can enjoy it, irrespective of whether they have a working knowledge of battery safety, electronics, chemistry, or anything else.
Cheers,
Katherine
gords1001
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- Oct 12, 2013
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- 2,031
@<a href="http://www.planetofthevapes.co.uk/forums/members/doodlebug.html" target="_blank">Doodlebug</a>.
I have a few issues with how those tests are conducted though someone has already highlighted that on your actual blog page.
As I point out above, I have one of thr same batch as thr one that failed, bought from the same batch and quite frankly if the venting is inadequate on this, then it is inadequate on any mechanical mod I have seen.
Coulf I suggest that this might be a better way of conducting your tests?
[video]http://m.youtube.com/watch?feature=youtu.be&v=Xjjscec3HuI#[/video]
I feel that the oven test, heating the entire mod to 260°c then add the heat generated by the cell going into thermal run away is muddying the results and certainly is not representative of what is actually happening with these failures.
All that said, in over ten years of li ion/li polymer use, including smashing lipo packs into the floor at over 100mph, I have never had a violent failure of a cell yet. Both mutant failures have in common that the owner has messed with the insulators/switch assembly without knowing what they are doing and I wonder if the heating in your test is melting the material that makes up the contact carrier part of the switch? If it melted it could easily seal off the vents BEFORE the cell vented. Has this been considered?
I have a few issues with how those tests are conducted though someone has already highlighted that on your actual blog page.
As I point out above, I have one of thr same batch as thr one that failed, bought from the same batch and quite frankly if the venting is inadequate on this, then it is inadequate on any mechanical mod I have seen.
Coulf I suggest that this might be a better way of conducting your tests?
[video]http://m.youtube.com/watch?feature=youtu.be&v=Xjjscec3HuI#[/video]
I feel that the oven test, heating the entire mod to 260°c then add the heat generated by the cell going into thermal run away is muddying the results and certainly is not representative of what is actually happening with these failures.
All that said, in over ten years of li ion/li polymer use, including smashing lipo packs into the floor at over 100mph, I have never had a violent failure of a cell yet. Both mutant failures have in common that the owner has messed with the insulators/switch assembly without knowing what they are doing and I wonder if the heating in your test is melting the material that makes up the contact carrier part of the switch? If it melted it could easily seal off the vents BEFORE the cell vented. Has this been considered?
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