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05-23-2011, 06:08 PM
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#1 | | Senior Member Join Date: Aug 2010 Location: NYC
Posts: 140
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I adapted the Digital Potentiometer for the TI PTR08100w regulator being that the reg needed a pot resistance of 200 ohms and the smallest D.P. is 10k ohms. Actually got it to work Grin in a range of 2.05v Shocked to 5.66v
3 Bullets have been used to build it. .44 cal magnum rim for the touch sw base and two .22 cal casings to connect the caps and route wiring through.
I put in a Mosfet touch switch. Bench testing revealed that using an N-Channel Mosfet can not be used. N-Channel's break the negative circuit. Removing the negative from the PTR08100w still produces an output so the N-Channel won't work.I used a P-Channel Mosfet and it worked perfectly. Being that I am using two 18350, 1200mah's totalling 7.4v to 8.4v's and most of the Mosfet's have a Gate Threshold Voltage or 2v to 4v to fully turn on the chip, I used a 100meg ohm resistor across the Gate to Source pins and it worked perfectly. I could possibly have used a 20 meg ohm which I did not have on hand and putting two 10m in series would have taken more precious space.
This is absolutely the best working mod I have made to date and the most labor intense mod I have made.
The Physical look of the Side x Side: Inspired by Asdaq, Parallex2 and Scubatdan. Thanks guys.    
More Details: Bullet Mod Details and Circuits
Last edited by breaktru; 06-11-2011 at 06:16 PM..
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06-04-2011, 10:32 AM
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#2 | | Senior Member Join Date: Aug 2010 Location: NYC
Posts: 140
| The tubes are adjustable by just sliding in or out. They can hold many types and size batteries. You can fit two 18650's (18mm diameter) down to 18350's. For smaller diameter batteries such as 17500 (17mm), 16340 & RCR123a (16mm) and 14500 (14mm), a filler tube can be placed around the battery.   Photo to left has the 18650's | |
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06-04-2011, 11:05 AM
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#3 | | Couldnt take it anymore Join Date: Sep 2010 Location: Mod impersonation carries a stiff penalty YKWYA
Posts: 10,769
| that is really sweat BT..I suppose you could also use other piping materials with the proper connectors caps etc. as well..but obviously copper is the most readily available and workable with hand tools at the local hardware store or HD..
Very nice job!...thanks for sharing your work..
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06-04-2011, 09:19 PM
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#4 | | Modder Join Date: Nov 2010 Location: rhode island usa
Posts: 2,957
| i really love the spin you have put on this mod, it looks cool.
a few months ago i took some brass plating and some 3/4 copper tubing and made a very similar unit, but very different at the same time, and using a 1k ohm pot on a regulator got 1.3v to 7.4 using two 18650s and a bit higher using 4 cr123s @ 3.7v each. yours however is a step in the direction of awsomeness that only cool people can achive  | |
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07-31-2011, 04:41 PM
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#5 | | Vapo-Tized! Join Date: Nov 2010 Location: Seattle
Posts: 464
| That is a sweet sweet mod and I want one. Or one for each hand...
__________________ When I die, distill my essence, and breathe my vapor to the winds. Steam me up, Scotty!
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07-31-2011, 05:17 PM
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#6 | | Senior Member Join Date: Aug 2010 Location: NYC
Posts: 140
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Originally Posted by tek  i really love the spin you have put on this mod, it looks cool.
a few months ago i took some brass plating and some 3/4 copper tubing and made a very similar unit, but very different at the same time, and using a 1k ohm pot on a regulator got 1.3v to 7.4 using two 18650s and a bit higher using 4 cr123s @ 3.7v each. yours however is a step in the direction of awsomeness that only cool people can achive | Wow Tek, don't know how I missed your reply, just noticed it.
Thank you for the kind words. Sounds like you built your self a real power house as well. Did you post any pix? | |
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07-31-2011, 05:22 PM
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#7 | | Senior Member Join Date: Aug 2010 Location: NYC
Posts: 140
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Originally Posted by Flashwitt That is a sweet sweet mod and I want one. Or one for each hand... | Ha, Ha, Flash. Thanks. Each hand, you wouldn't want more than one. This thing vapes like a champ. All my mods have been retired since I built this. | |
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07-31-2011, 09:14 PM
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#8 | | Modder Join Date: Nov 2010 Location: rhode island usa
Posts: 2,957
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Originally Posted by breaktru Wow Tek, don't know how I missed your reply, just noticed it.
Thank you for the kind words. Sounds like you built your self a real power house as well. Did you post any pix? | long story short was reposted in the post below, sorry..
Last edited by tek; 11-23-2011 at 06:52 PM..
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11-23-2011, 06:51 PM
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#9 | | Modder Join Date: Nov 2010 Location: rhode island usa
Posts: 2,957
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Originally Posted by breaktru Wow Tek, don't know how I missed your reply, just noticed it.
Thank you for the kind words. Sounds like you built your self a real power house as well. Did you post any pix? | I missed some too huh, no i did not, it was sent to some one to produce 6 more units, but it lies in a desk drawer, so i am going to build another, i love how you made the body, and i am going to take the look and twist it. Probally going to use lt1083 or lt1084 and maby dual barrels, but i love the look, Also going to make a locking bottom mech, like i did befor, and i plan on putting pics here and on ya forum.. | |
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