Sigelei #20 with various rbas, way different results

[dezyner]

Got a sigelei #20, well, because for the price, it's pretty disposable, and all the mechs I really want, will cause hardships, the war department, aka my wife will freak out and we can't have that. I like knowing I will "probably" wake up in the morning. So, I figured for the experience in a very cheap mech, I did it. Here's my problem, every time I try to read about the #20 threads here, somehow, somewhere, I get way more info on the 19 arbitrarily mixed in.

I get it, it's a cheap rip off of the roller, and I kinda like the top fire more than bottom fire, so I wound up with the #20.

I have several cheap rbas that I picked up to learn with, before shelling out the cash for the good stuff. So far, no problems. coils, wicks, mesh, sub ohm, not the issue.

My question with this new mech is pretty easy to ask, finding the answer is becoming tedious.
why does it perform different with different rbas. all things being equal. same battery, same resistance. what's the deal.

Phoenix V4 Rebuildable dripper - works the best - silica wick, 1.2 ohm coil
RSST - ehh, it's ok, weak actually, I was being optimistic, - SS mesh wick, 1.2 ohm coil
AGI - same deal, ehh, ok - silica wick, 1.2 coil
Terminator C - not as well, but the coil is higher ohms, 1.4 ohms, so I kinda figured that had something/alot to do with it

I'm guessing here, but is the distance between the coil and the battery doing this? the charge has to travel further, dropping down more by the time it get's to the coil? only guess I had. this is supposed to be the updated fixed spring, but don't know for sure it is.

Anybody got any DIY modding youtube vids, or thread links (other than the threads that flip between the 19 and 20) that will help me rehab this device?

As always, thanks in advance, appreciate it.

 

[StaircaseWit]

I'd say you're on the right track. Every device has its own resistance to current flow. Drippers tend to have very short posts so little resistance -- they may even be chrome-plated brass (not sure on your phoenix) which has good conductivity. The RSST uses a spring-and-washer center post connection which may cause a bit more resistance, but mine doesn't show any different drop compared to the AGA-T2 which uses center post nuts. Wrap the wire around the post on the RSST and it's the same. The AGI has a spring in the center post -- the post is literally 'broken' by a spring connection. I'd expect that atty to have the most internal resistance. I've measured my term-c and it has very little resistance, but it can be dependent on your connections.

Most of the information I've seen on modding the #20 is in the Sigelei thread.

 

[dezyner]

I'd say you're on the right track. Every device has its own resistance to current flow. Drippers tend to have very short posts so little resistance -- they may even be chrome-plated brass (not sure on your phoenix) which has good conductivity. The RSST uses a spring-and-washer center post connection which may cause a bit more resistance, but mine doesn't show any different drop compared to the AGA-T2 which uses center post nuts. Wrap the wire around the post on the RSST and it's the same. The AGI has a spring in the center post -- the post is literally 'broken' by a spring connection. I'd expect that atty to have the most internal resistance. I've measured my term-c and it has very little resistance, but it can be dependent on your connections.

Most of the information I've seen on modding the #20 is in the Sigelei thread.

Thanks much. been skipping around on that thread for a couple days. my attention span threshold and budget is depleted for the week. would a drop in module allow me to compensate for the current flow resistance and jack it up, while dropping the coils even lower do you think? I'm probably going to try playing with the rsst and maybe get the brass screw floating around in co-ops and boards, that may help some too. the agi, needs the same kinda modding I assume. thanks again, looks like this mod now has it's own favorite aty for the near future. i can drip with it at home, no problem. cheers.

 

[coho72]

The easiest way to deal with your power issues per atty is to just drop a sigelei stomp in the tube $19.99 and that should make you happy with any atty you wanna throw in it. If you have some extra money and you want to be a little bit happier than that you can drop a crown in it for about $45. There might be a cheaper way by modding , sanding , spring replacement but this is how I dealt with the headache , lol.

 

[Thrasher]

every thing said already it comes down to the build quality of the device. and materials used. this is also the reason most of the higher end equipment try to use brass/copper as much as possible, almost all top shelf GENI use brass centerpins, some even use brass for the neg screws.

there was a post some time ago showing the voltage drop with a bunch of differnt devices and some were as high as .2-.4 volts. in a regulated mod it makes no difference as the chip offsets the difference, but in a pure mech with a slightly used battery running at 3.6 volts already .3 is a big drop