RSST rebuild issue

[iheartvape]

Ok, so a little background on me, I'm not entirely new to rebuilding, I have my RDA I rebuild on regularly, however I bought a RBA, the RSST, that honestly is just kicking my butt.

I can not seem to get a stable coil built on it. I get a dam good coil, evenly spaced, all glows red evenly on pre burn with out the mesh, reading at 1.4ohms. My issue though is I get it to fire once then it says it's only at like .8 ohms, then I just touch the wick or flick it and it's back at 1.4 and it will fire again. I have wasted about a good 2 maybe 3 feet of Kanthal A1 28 gauge wire and about 5 squares of SS mesh trying to figure this out.

Any ideas or anything on what the deal is? I thought maybe I wasn't wrapping enough coils, so I tried more then less then micro coils, all do the same.

[Compenstine]

Wire size, drop to 30-32 gauge Kanthal you will have much better luck. 28ga will work but you need at least 12 wraps. You want your lowest ohm reading at 1.5 to 1.7. 5 wraps with 30ga or 4 wraps with 32.

Also you want the top of the coil as close to the + post as you can get without touching it. Some people add a small washer to the post. This will allow the coil to be close to positive and still be straight.

Edited November 9, 2013 by Compenstine

[iheartvape]

Awesome, yeah I just started using 28, it works good on my RDA but like you were saying it's pretty dam hard to get 12 wraps for the RBA. I do have a washer in my top post butility it's just a small one that came with the RSST.

Question though, what does having the top of the coil so close the the + do? I was making mine straight up and down with a little distance between it and the + post. That right there might be 1 issue then.

[Compenstine]

Think of wire like a hose for electricity the bigger the hose, the more electricity can flow freely, less restriction. Ohms measure the flow of electricity in the wire like water pressure in a hose. As the hose gets smaller the more restricted the flow gets. The length also plays a factor in the Ohms, the longer the wire, the higher the ohms.

What I know about placing the wire close to positive does only one thing,. It shortens the wire in turn dropping the ohms by a very small amount. All the videos I have seen mention to do this, but none have really explained why. But I have noticed with the RBA I have (T2), it seems to make a difference in it being more stable, meaning the ohm readings don't bounce when i check it.

Edited November 9, 2013 by Compenstine

[iheartvape]

Alright I finally did it!!!! Still using the 28 gauge but I learned that my coils were too small in diameter. So using a brush wheel for my dremmel is the same size as the hole for the wick so I wrapped my coil around it, then pulled the wheel out tested coil with a 12 wrap and it was at like 2.8 ohms so I unwrapped 2 coils 're cut and retest, now I'm sitting at 2.2 ohms. Next build I will do 2 less cause I like mine at 1.8 ohms. I also learned I need a pen torch to hit the mesh with as well it's taking forever to get the nasty taste out even after pulsing the coil for about 20 minutes.

[iheartvape]

I also drilled out the air hole to 1/16 great for producing large clouds but don't get much flavor, oh well that why we have opposable thumbs now I just have a carb... Lol

[Rixter]

Try

[Proetus]

This is another great way to build genny's! I got something spiffy coming with some hemp and nickel foam. Once i get the hemp cleaned up i'll post some pics.

[WillBlack]

... all glows red evenly on pre burn with out the mesh, reading at 1.4ohms. My issue though is I get it to fire once then it says it's only at like .8 ohms, then I just touch the wick or flick it and it's back at 1.4 and it will fire again. I have wasted about a good 2 maybe 3 feet of Kanthal A1 28 gauge wire and about 5 squares of SS mesh trying to figure this out.

That usually means you haven't made good, solid wire connections to your posts. And FWIW a SS wick can be reused for many new coils.

[Proetus]

Yea ss mesh wicks can be reused for just about forever. Another thing to try if you cant get a good coil going is to take a very small amount of cotton and lightly wrap it around the portion of the wick where the coils goes. However you can not dryburn with this method.

[iheartvape]

thanks for all the info guys. it's really helping me try different techniques and methods. my recent build I did tightly compressed coil but kept the diameter about the same as the wick hole, so I wouldn't have to do 12 wraps... lol it seems to work pretty good.

[Proetus]

Good to hear!