Gentle Friends,
I'm kinda stoked right now. Based on a plan hatched last night, I just got back from the local hardware store to get a slightly different spring (different store) than I used for the Fred Flintstone PA the other day. This one:
http://www.centuryspring.com/Store/item_detail.php?StockNumber=313]
The local store (True Value) carries them as "C-756" packaged in pairs for four bucks. It's a 3.5 inch fairly mild spring that fits inside Cera and will pass our old friend the AW IMR14500:
That's 6 dimes taped together to make them easier to handle and the cap from a Doob Tube (also items most have handy hopefully?). For those catching on to where this is going......yes, it works great! You might have to adjust the number of dimes to fine tune for yours. But when you assemble it more or less as shown (the hollow of the cap covers the spring on the tail cap converting it to a threaded plug) it comes tight just before the end (about 'a dime's worth to keep the measures topical). This pushes the top of the 14500 up into contact with the center pin on the oil cart, the minus end of the battery connects through the top dime and up the spring to the screw plate
lighting the core without using the switch or copper strap! It's lower in capacity of course, so it won't run as long as with the 18650 but it makes lots of lovely vapor in what could otherwise be a
dead Cera.....
I'd guess 10 to maybe 15 minutes of run time depending on which AW IMR you've got and your exact core. Plenty for a LL bowl or two, and LOTS and LOTS of EO use. On par with what I'm getting using a thread adapter on at TV Ultra supply using those same AW batteries.
It even gives you a 'latching switch' of sorts in the process. You turn it on and off by screwing and unscrewing the end cap.
The spring could be cut back an inch or so to make it a little easier to assemble but it only needs about 3 pounds of pressure to mate the treads so it works fine as is. IMO this (or a similar) spring is really cheap insurance if you have 14500s and Doob Tubes around.....and can scare up the sixty cents of course?
Not a permanent solution, of course, but it will keep the sessions going while you plan things out.....
OF