Collapsed spring with 2.3 ohm coil in A7 Mini

[gbojar]

I built a 2.3 ohm coil in my new A7 mini and put it on my Reo mini 2.0 and collapsed the spring. Both the Reo and A7 are new to me so I don't know what if anything I did wrong? I was told avoid LR but had no probs with a 1.7 mini cart. Now I'm afraid to use the rba on the Reo again (after I get the new spring). Any thoughts? i really had no need for yet another rba!

 

[super_X_drifter]

The A7 has been known to cause problems. Check the thread above in the stickies section called "dealing with the A7"

 

[davelog]

Make sure the center post on the bottom of the A7's connector is flush with the outer shroud where the threads are. If that center post is protruding out past the threads, it can unseat the insulator that keeps positive and negative separate in the connection, which can cause a short that collapses your spring.

I love the A7, but you gotta look at that center post EVERY TIME you screw it on a REO.

 

[JC Okie]

Those A7s have caused more collapsed springs than anything else I've ever read about. The ^^^above posts are right on. I finally put my A7 aside because I was afraid to put it on any REO I owned. Up in that thread that super_x_drifter mentioned, there's a "fix" of sorts that will help. Like davelog says, make sure your look at that center post every single time and make sure it's screwed in flush with the outside sleeve. It's wobbly, and it very easily gets screwed out a little too far. Here's the link to that thread. http://www.e-cigarette-forum.com/forum/reos-mods/401265-dealing-a7.html

 

[Honigschmidt]

I have an A7 also, and it really gets me pondering if saving a few bucks have been worth it.

2 collapsed springs and a mechanical issue I could not fix myself, so I had to send it in. (Thanks again Reo makers for fixin that!)

All of it I attribute to my A7. The spring shorts, I believe, were caused by the atty wires touching the metal base. Heated up way too much, then..... Boing goes the spring.

No idea if the same could be happening to you but just another tip to look out for.

 

[Honigschmidt]

Bah! I have to do this.

100 posts!!!!!

 

[rouxdoo]

I'm sorry that happened to you. The same thing happened to me the day I got my REO. I had read about it the A7 problems, but figured that I would just be careful with it. I was until it shorted

Be prepared to grind off the thick oxide layer that your firing pin now has when you get your new spring. I would really suggest you just get the RM2. Best. RBA. Ever.

 

[supertrunker]

What i have always done with mine is to screw that center pin up as far as it goes. Because it stops it wobbling and that is the problem. If it touches the outer case thru wobbling - pop!

It means you cannot measure the coil and RBA on a little box resistance device - unless you wind that pin down again to do so, but if you can use a multimeter, that's no problem.

The advice to get an RM2 is sound - i have rather a lot of those and my A7s don't much get used now.

T

 

[Justice]

The a7 is finicky. Definitely not one I'd recomend to someone new to RBAs. Curious why you've been told to stay away from Lr ?

 

[Commie]

Reo can definitely handle LR. I'm running 0.8 coil on one of my SS atomizers, and I've heard of some silly people going even lower. The unmodified center post on A7 puts you at a dead short though, which is likely what collapsed your spring

 

[gbojar]

I'm sorry that happened to you. The same thing happened to me the day I got my REO. I had read about it the A7 problems, but figured that I would just be careful with it. I was until it shorted

Be prepared to grind off the thick oxide layer that your firing pin now has when you get your new spring. I would really suggest you just get the RM2. Best. RBA. Ever.

Thanks for this! After the collapse it kept misfiring so after reading this I just went over the pin with a small file and bammo, hits like Mike Tyson ... Thanks again!

 

[rouxdoo]

Thanks for this! After the collapse it kept misfiring so after reading this I just went over the pin with a small file and bammo, hits like Mike Tyson ... Thanks again!

Hey, cool. I'm glad you're up and running again.

 

[davelog]

Thanks for this! After the collapse it kept misfiring so after reading this I just went over the pin with a small file and bammo, hits like Mike Tyson ... Thanks again!

Wait a minute - you replaced the collapsed spring, not just stretched it back out again, right?

RIGHT?

That collapsed spring, even when stretched back out, will never collapse again. It only has one shot at doing its job - protecting your REO from the damage a short can and will cause - and if re-used, the next short will melt your button and quite probably take out the mechanics of the firing pin assembly, as well as letting the battery go on runaway discharge. VERY bad scene. Springs are cheap and easy to replace on the metal REOs, well worth having a few spares lying around.

If you didn't do this, good for you. If you did, fix it right now.

 

[JC Okie]

Wait a minute - you replaced the collapsed spring, not just stretched it back out again, right?

RIGHT?

That collapsed spring, even when stretched back out, will never collapse again. It only has one shot at doing its job - protecting your REO from the damage a short can and will cause - and if re-used, the next short will melt your button and quite probably take out the mechanics of the firing pin assembly, as well as letting the battery go on runaway discharge. VERY bad scene. Springs are cheap and easy to replace on the metal REOs, well worth having a few spares lying around.

If you didn't do this, good for you. If you did, fix it right now.

Yes, yes, yes. Words to live by. Good for you, davelog.