Homemade Resistor Disc - Or How to Make Any 6v/7.2v Mod into ~5v Modularly

**Wireguy** · 11-29-2009, 06:18 AM

Yea, I've built power supplies and power regulators with them but they get to hot for my liking for this
application. Rather inelegant also.

I was thinking that this may not get too hot because it has the entire system to use as a heat sink unlike the regulator. As long as the batteries don't get to hot.

**lunaras** · 11-29-2009, 06:34 AM

Originally Posted by doots

lol. how did you ever come up with this? Does it really lower to about 5v output?? pretty cool.

How big of hole in the center does it have to be? does it matter?

I used a washer that had a inside diameter just slightly smaller than the ID of my Chuck, about .75", so the disc would fit easily down the tube. The thickness and graphite content are the main constituents in how much resistance disc ends up having, the diameter of the disc is pretty much determined by the size available in the mod.

I have also tried this with a nylon washer that had a hole about 3/16", which was the perfect match to the button on my battery. In this case, I left the washer surrounding the resistor disc attached and trimmed the washer to fit down the tube since its diameter was too wide. I didn't have much success getting a good contact with this since the mixture shrinks a bit when drying, and left the top side with a bit of a depression.

I don't recommend using the nylon washer right now for those reasons, but I may find some way to do it well and if so, I'll post it here.

**smonomo** · 11-30-2009, 02:17 AM

Thanks lunaras,

Definitely gonna play around with this.

**Jason365** · 11-30-2009, 08:50 PM

Wow that sounds great. If this really works, I will be making me one. I will keep cheking back here to find any updates, and of course Pics or it diddnt happen.

**HippyGirl** · 11-30-2009, 11:55 PM

OK, stooooopid question...

Can this be adapted for a nicostick somehow?

**NickJuice** · 11-30-2009, 11:56 PM

is that 5v's loaded or unloaded voltage? If unloaded...what does it do loaded? Loaded voltage is the Actual Voltage you are vaping at...

**lunaras** · 12-01-2009, 04:09 PM

Originally Posted by Jason365

Wow that sounds great. If this really works, I will be making me one. I will keep cheking back here to find any updates, and of course Pics or it diddnt happen.

Sorry about no pics yet, I can't find the camera atm and haven't had time to do a thorough search. My wife stashes it somewhere different after every time she uses it and then can never remember where she put it.

Hopefully I can find it tonight and get some posted.

Originally Posted by HippyGirl

OK, stooooopid question...

Can this be adapted for a nicostick somehow?

I'm assuming you are referring to a nicostick with two cells in it to give 6.0v or 7.2v since the original nicostick just used one 3.7v cell and pairing a resistor with this would be rather pointless. Theoretically, you should be able to, as long as you have enough room to put a 1-2mm thick disc between the batteries or one of the batteries and a contact. I know that in some boxes the spring ends up being really tightly compressed, and in this case you just may not have enough room.

You will have to find a washer that has an ID close to the same diameter as your battery, or you could use a bigger one and cut the disc down to size. Heck, given that a nicostick boxy shaped, you could use a squareish/rectangularish one instead, as long as it fits.

Originally Posted by NickJuice

is that 5v's loaded or unloaded voltage? If unloaded...what does it do loaded? Loaded voltage is the Actual Voltage you are vaping at...

This is the unloaded voltage, just like all other 5v mods I've seen. I don't have the parts yet to make a way to test the load voltage on a mod like the Chuck, but I'm sure that the voltage drops to something like 4.5v under load, again, just like every other 5v mod out there. Once I rig up something to test the load voltage (may be a while before I get time and/or parts), I'll post the results.