REO Grand current limit?

[drew_goring]

Collapsed my first spring. Took me at least half a day before I realized it was collapsed. Had to compare it to a new one to tell. The only thing I noticed was the mod misfiring and arcing a lot on top. I'm pretty sure I shorted it the previous night when I was adjusting my coils while dry burning. However, I am not certain. Using an RM2 with plastic drip tip, my coil is nowhere near contacting anything to short out.

My question is, is there a current limit to the spring? I'm thinking if it wasn't shorted out the night before, could my normal use be collapsing the spring? I'm currently running a 0.6ohm single coil. Could that have possibly caused the issue? I have been checking a few times since I replaced the spring, and the negative terminal of the battery is cool to the touch, while the positive is warm, which is what I'd expect.

On a side note, don't drop the screw holding the spring in. I ended up having to sweep my whole kitchen...which I guess wasn't a bad thing.

 

[Dturp]

I'll let the local geniuses here fill in the details on this but there has been a few of them that had their springs slowly collapse at or around .4 Ohms. I'm thinking from your description it was a partial collapse and not a full cause you wouldn't be able to keep using it with a full collapse. But once again I'm just a n00b compared to the gurus here.

 

[drew_goring]

I'll let the local geniuses here fill in the details on this but there has been a few of them that had their springs slowly collapse at or around .04 Ohms. I'm thinking from your description it was a partial collapse and not a full cause you wouldn't be able to keep using it with a full collapse. But once again I'm just a n00b compared to the gurus here.

Yeah, that's kind of what it looks like, a partial collapse. I was watching a video on how to clean up the firing spring, and noticed their spring looked a lot different from mine. No worries, I'll just have to add a wrap to my next build. (and anxiously await the sub-ohm kit)

 

[MamaTried]

I'll let the local geniuses here fill in the details on this but there has been a few of them that had their springs slowly collapse at or around .04 Ohms. I'm thinking from your description it was a partial collapse and not a full cause you wouldn't be able to keep using it with a full collapse. But once again I'm just a n00b compared to the gurus here.

actually, i think it's 0.4 ohms and the hard collapse occurs at 0.3. but someome more experienced will jump in to confirm

 

[pdib]

Ya'll got it. seems to be around 8 amps. Springs that I've had for months seem to hold up with even .3Ω coils. But more recently acquired springs seem to slowly collapse with a steady application on a .4Ω coil. Good plan, drew, add a wrap and jump on the subΩ kit!

 

[pdib]

BTW: my batteries don't get warm on top with .4Ω coils. I had noticed, in the past, that they would get warm when I had sparking to the firing pin. File it pretty firmly, swab it with rubbing alcohol and Noalox it. Clean your battery tops too, as the sparking affects them too.

 

[drew_goring]

BTW: my batteries don't get warm on top with .4Ω coils. I had noticed, in the past, that they would get warm when I had sparking to the firing pin. File it pretty firmly, swab it with rubbing alcohol and Noalox it. Clean your battery tops too, as the sparking affects them too.

Yup, a bit of sparking as well, even with the new spring. I know what I'm doing with the rest of the night. Thanks for the info.

 

[Treebeard]

On a side note, don't drop the screw holding the spring in. I ended up having to sweep my whole kitchen...which I guess wasn't a bad thing.

Lol! Been there. Little screws and wire clippings. Don't want'um ending up in someones foot.

 

[MamaTried]

Lol! Been there. Little screws and wire clippings. Don't want'um ending up in someones foot.

i've dropped so many rm2 screws i need to find a place to order them in bulk

 

[pdib]

those are my favorite moments, my wife comes out the shop and finds me on my hands and knees with one cheek almost touching the concrete. She doesn't say anything; but after 16 yrs, I know exactly what that particular . . . . .. . is saying.


. .. . that's why I try and do it at least once a week.

 

[Vapeaddikt]

As a rule of thumb just keep it at .4Ω or above as previously stated. If I got below .4Ω it slowly collapses springs.

Really w/ Cotton anyways it heats so hot I end up getting burnt hits unless I'm running Silica running that low anyways.

 

[Justice]

Clean your contacts. Even put some noalox on the screw and under the spring.

 

[UKPaul]

Mine were just dropping a few mm when I ventured into the 0.4ohms and collapsed one completely from a hard short where the coil touched the atti rim but had no issues at all since staying around the 0.55 to 0.6 ohms.

 

[darkzero]

those are my favorite moments, my wife comes out the shop and finds me on my hands and knees with one cheek almost touching the concrete. She doesn't say anything; but after 16 yrs, I know exactly what that particular . . . . .. . is saying.


. .. . that's why I try and do it at least once a week.

When ever I get down on the floor looking for a small shiny thing that I dropped, I end up getting back up with all kinds of sharp small shiny things stuck all over me! Good thing I don't put a cheek on the floor but I do come close too.

Guess I should sweep & vacuum up the chips more often but they just keep coming back!

 

[clyde2801]

Sorry to go off topic, but Dturp, have we met? Or have you met Sterno? We all live in the same city.

 

[Dturp]

Sorry to go off topic, but Dturp, have we met? Or have you met Sterno? We all live in the same city.

Nope, I'm gone most the time but it would be nice to get a chance to meet up. I was going to suggest that to Scott when i got a chance.

 

[NicoHolic]

i've dropped so many rm2 screws i need to find a place to order them in bulk

This is why my "REO Shopping List" includes a couple of them and a coupla spare RM2 o-rings.