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Here is my idea for the perfect VV mod box with 3X 18650's for a 12V supply. It has two switches due to the size so it can be used in either hand and a recessed connection point with plenty of room for just about any type of VV circuit you would like to insert. I would also add a 5V usb output to charge a cell phone or tablet as an emergency backup ;]
I smaller 3X 14500 version would probably work fairly well also.
I would call it the Clover Box.
Maybe some day I can get it molded or machined. It would cost too much for me at this point.
I smaller 3X 14500 version would probably work fairly well also.
I would call it the Clover Box.
Maybe some day I can get it molded or machined. It would cost too much for me at this point.
bstedh, do you have drawings of the "Clover" with dimensions? Maybe I can make one for you, and one for me of course.
Lee
Lee
bstedh, I like the clover shape but would recommend the 14500 version over the 18650. I did a dual tube for an 18650 and a 10ml bottle and used 2 25mm aluminum tubes for the body. One of the biggest drawbacks was it was uncomfortable to wrap my hand around the circumference. It was better with 2 22mm tubes, but that mod got broken down for packing in my suitcase and never got re-assembled. With a circumference around three 18650's and the atty tube that is really a lot. Maybe even 3 14650's to keep it slender and tall?
Urquid, could you drill and mill an aluminum block to say, at the thinnest and rounded, 1mm wall OK?
Urquid, could you drill and mill an aluminum block to say, at the thinnest and rounded, 1mm wall OK?
I made it in e machine shop. I could send you the file but I don't have the dimensions correct. I just wipped it up quick to see what it would look like. I plan on making a cardboard mock up to see how it will sit in the hand.
I chose 18650's becase I have 34 of them :].
Sent from my SPH-D700 using Tapatalk
Don't worry about the file then. If I have time I might play around milling a wood or plastic mockup. Now where did I put that can of spare time...
if you ever get to the production faze I'd be more than willing to trade half of my batteries.
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Anybody has info on machining the 510 connector? My boss is helping me with the programming side for the lathe and told me to ask what feed rate to use for the thread. I know its 7mm by .5 but all he requires is a feed rate, I'm still a newb when it comes to programming. Thanks
The feed rate is selected To cut the correct thread. There might be a selection made by swapping gears, or on a bigger lathe some other mechanism. The answer is that there is no magic number, the feed rate corresponds to how fast the lathe is moving via it's lead screw.
To hard to explain here, but if you really want the details google lathe thread cutting.
To hard to explain here, but if you really want the details google lathe thread cutting.
Yeah I know that, we are going to do it on a yama seiki cnc lathe because our manual is a hardinge with No threader, he can figure it out off my mating part but he just told ask if anybody had done it to not go through all the trouble lol, I really wouldn't want to press in a connector from MV but if I can't figure it out I just will
Are you running a canned threading cycle like G92? To get your feed rate you need to convert mm to inches...unless your machine is already running the metric scale. So .5mm / 25.4" = 0.0196 for your feed rate. What surface speed is depends on what your cutting. Sorry...just stuck my nose in quick but will be back later....hope this helps. Maybe another machinist here can verify it...I have been out of it for years.
Oh...I thought you were cutting threads not tapping...sorry. For rigid tapping, feedrate (in inches per minute) = thread pitch x revolutions per minute. So say your tapping at 250RPM...0.0196 x 250 = 4.921 IPM feedrate.
Will discuss tomorrow with the boss, I know he can do it, 20 yrs. Aerospace experience lol. He just busy all day. Here are a couple of pics of ny progress, I'm working on two at the moment.
Both still in rough stages but its getting there. Thing is gonna be huge!
Both still in rough stages but its getting there. Thing is gonna be huge!
Huge is OK 
In case you haven't considered it, make sure you provide an escape path for any unruly batteries.
A small direct vent to prevent a slow pressure build up and a larger vent or weak blow out for catastrophic battery failure.
No matter how strong you make it there will be a spot that will give it up if a Li-ion cell were to go thermal.
Pick an end that you would rather have blow out (maybe NOT the face end) and plan ahead.
The eGo in your photo will blow the whole bottom plug out. Sometimes that isn't enough and the switch melts and blows out also.
Just know which end will go first.
In case you haven't considered it, make sure you provide an escape path for any unruly batteries.
A small direct vent to prevent a slow pressure build up and a larger vent or weak blow out for catastrophic battery failure.
No matter how strong you make it there will be a spot that will give it up if a Li-ion cell were to go thermal.
Pick an end that you would rather have blow out (maybe NOT the face end) and plan ahead.
The eGo in your photo will blow the whole bottom plug out. Sometimes that isn't enough and the switch melts and blows out also.
Just know which end will go first.
Well I was gonna do a push button on the bottom, now I'm just scared lol. I guess less threads will do? I'm gonna do holes towards the bottom of it around the tube, how does that work? The more the better or what? I was actually going to skip the threads and use set screws to hold the caps I thought it would make it look nice. Confused now
Well, we all 'hope' nothing ever goes wrong, but it could.
A mod that doesn't have provisions for severe venting, in a planned direction could cause severe injury.
Just ask the flashlight folks. The guys doing 40 watt lights powered by stacked Li-ion cells.
If the cell goes thermal, do you want the sharp edge of a mega carto blown down your throat?
Sorry about sounding like a Debbie Downer, just plan ahead with your design.
Search for threads about mods blowing up. Or flashlights blowing up.
A mod that doesn't have provisions for severe venting, in a planned direction could cause severe injury.
Just ask the flashlight folks. The guys doing 40 watt lights powered by stacked Li-ion cells.
If the cell goes thermal, do you want the sharp edge of a mega carto blown down your throat?
Sorry about sounding like a Debbie Downer, just plan ahead with your design.
Search for threads about mods blowing up. Or flashlights blowing up.
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