Trying to get a 1.5 ohm coil with 28g?

[Altaire Versailles]

Question to those who are knowledgeable about building, I'm trying to rebuild some protank heads for a friend I'm gonna give an old vamo to, and all I have is 28 and 34 guage wire. With the 28 I do a 4 wrap and can't get it above an ohm, and with the 34 I cant fit the coil in the housing. Any suggestions besides buying new wire??

 

[dbrandt01]

Try this site Coil wrapping | Steam Engine | free vaping calculators

Not sure what diameter you need for a protank head

but at 2.0mm diameter try 9 wraps if it'll fit. I don't remember what these look like, sorry.

With 34g you'd need 2 wraps at 2.0mm diameter which I wouldn't advise.

 

[SleeZy]

I use the little blue screwdriver 28g, 8-9 wrapps should net you 1.4-1.5 or so.
I usualy do 6-7 wraps of 28ga for 1.2-1.3ohm range on my kayfuns.

Edit: I missed that its for the protanks.
Then you should use 30awg realy, atleast i used 30-32 for my protanks back in the days.

28ga will be quite hard to get it right in the small area due needing more wrapps.

 

[Cool-breeze]

I'd say take your 34 and twist it to get something comparable to a 30/32. If you have a drill doing twisted wire is pretty easy.

 

[Robert Cromwell]

I use a 1/16 drill bit for protanks/T3 and Evods. About 5 wraps should work for ya using 32 ga. I would not use anything larger than 30 ga too big for the chamber and could burn you little insulator thingy too.
You would need about 11 wraps of 28 ga and I do not think it would fit in there.

 

[DingerCPA]

I wrapped one or two PT heads with 28 - 1/16" drill bit and about 9-10 wraps. It's a tight fit, but I got it to work. What diameter are you using with the 34g? If you have enough 34, try twisting it to "lower" the gauge. Steam-Engine looks to be about 3 wraps on a 1/16" bit to get you near 1.5....

ETA - sorry Cool-Breeze - I was mid edit and went away before you posted. Forgive the duplicate

 

[Robert Cromwell]

I wrapped one or two PT heads with 28 - 1/16" drill bit and about 9-10 wraps. It's a tight fit, but I got it to work. What diameter are you using with the 34g? If you have enough 34, try twisting it to "lower" the gauge. Steam-Engine looks to be about 3 wraps on a 1/16" bit to get you near 1.5....

ETA - sorry Cool-Breeze - I was mid edit and went away before you posted. Forgive the duplicate

How did those 28 ga coils work out?

 

[VHRB2014]

Ya, you really need 30 gauge for PT heads, IMHO. That`s all I ever used in them and it made it pretty easy.

 

[bussdriver]

Ah, the good old protank heads. Single coil I assume. I'm too lazy to try and rebuild one of those things as a dual coil.

28 gauge is probably too big. You can do it, but you'll probably have to make it big diameter, flatten it, play with the upper gasket to make the oblong wick fit, etc. When I would rebuild protanks, 30 gauge seemed to be the choice.

Other posters have mentioned burnt insulators. Again, being OCD, mine would have NR-R-NR wire construction. To make 1.8 ohms I would use about 60 mm of 30 gauge Kanthal, with NR welded on each end. Overkill for most? Probably. I still rebuild some for a friend who loves the protank with cotton wicks. He tells me the factory heads last 1 day, but mine last a week or more.

Another reason not to go larger wire than 30 gauge is the watts. A heavier wire will require more watts to do the heating stuff, but the protank doesn't have the airflow to support this kind of power. Probably best to limit the protank to 10 to 12 watts. The way the protank heads are designed better airflow just isn't possible.

 

[Robert Cromwell]

I drill out 2 of the air holes on my protanks to 1/16. Helps about all you can with the airflow. I have been doing 30 and 32 ga coils. Prolly going to go with 32 full time because of the legs staying cooler and not tending to burn the insulator. The airflow seems to cool the 32 ga legs down better than the 30 ga ones. 32 ga heats up a bit faster too.

 

[DingerCPA]

How did those 28 ga coils work out?

I only did one or two - 28g was VERY tough for me. They tended to touch the sides of the coil base.... I prefer 30g for my PT2 heads. Most of my other coils are 28. I may invest in some 26g, but I think I'd rather get dual coils down pat first.

 

[Bunnykiller]

28 ga. on a 2.5 mm shaft at 5-6 wraps will do 1 ohm.... 8 wraps will be 1.5 ohms

 

[Robert Cromwell]

I only did one or two - 28g was VERY tough for me. They tended to touch the sides of the coil base.... I prefer 30g for my PT2 heads. Most of my other coils are 28. I may invest in some 26g, but I think I'd rather get dual coils down pat first.

I wondered how you got them to fit. And I suppose every time you rewicked you had to adjust them away from the sides of the base again?

 

[DingerCPA]

I wondered how you got them to fit. And I suppose every time you rewicked you had to adjust them away from the sides of the base again?

Never rewicked 'em. Too much of a PITA (by then, I had my stash of 30g)

 

[IMFire3605]

Question to those who are knowledgeable about building, I'm trying to rebuild some protank heads for a friend I'm gonna give an old vamo to, and all I have is 28 and 34 guage wire. With the 28 I do a 4 wrap and can't get it above an ohm, and with the 34 I cant fit the coil in the housing. Any suggestions besides buying new wire??

32awg, 1/16th inch ID, fold in half, 10 wraps, floats in around 1.45 to 1.65ohms most times (this is a parallel coil build, 10 wraps each wire for a total of 20, makes a very snug fit in the housing)

 

[Altaire Versailles]

ok thx everybody I figured it out...did 8 wraps with the 28 gauge and got a couple 1.5 ohm coils...it was just a pain adjusting them so they werent touching the sides and shorting... had to crimp the coil with tweezers while firing the torch on it to get it to stay compacted...we'll see how it vapes once I get it to my friend

 

[crxess]

Resistance is a value of the Diameter and length.

You need to learn how to calculate needed wraps according to Wire Guage and Wrap diameter to determine the number of wraps needed...........
or..............use this:

Coil Toy - Online calculator for e-cigarette resistance coil building

 

[joesquid]

Looks like your questions been answered and you've figured it out. Did you use a 1/16th bit? That's the largest I could find to fit in the slot. I like to keep the bit inserted to stabilize the coils until I've reassembled the bottom half of the head.

 

[93gc40]

Twist 2 strands of the 34 wrap it 5-6 times around a 1/16" form. Mount Verticaly in the protank head and pack cotton or rayon around the coil. Vape-On.