Wire/coil gauge efficiency testing

[Boden]

Test methodology: I built each coil with the same ID 4mm and width 8.4mm. Measured out 5ml of 70vg and vaped through it using timed 4 second puffs at 66W. Puffs were taken in sets of three. Each puff was marked down so I could count how many puffs it took to vape the 5ml. Then I divided 5ml by the number of puffs.

All tests done twice at 66 Watts on a Velocity rda.
All coils made with Kanthal A1
Radiator coils have equivalent surface area of a 4mm ID x 8.4mm Wide round coil.

The left side is the most vapor produced, the right is the least vapor produced.

The left side is the cooler puff, right side is the warmest puff

26/32 fused Clapton and 30ga parallel Radiator

30ga triple parallel

28ga parallel

28ga parallel Radiator

28ga triple twisted

26ga parallel

 

[Boden]

Saved for additions

 

[Rixsta]

Good work Boden !

 

[Boden]

Good work Boden !

Did I explain everything well. I'm good at science but bad at explaining things sometimes.

 

[MikeyConti]

Did I explain everything well. I'm good at science but bad at explaining things sometimes.

Looks very straightforward and simple too me.

 

[Rixsta]

Did I explain everything well. I'm good at science but bad at explaining things sometimes.

I think you did a grand job, as Mikey said, seems pretty straightforward

 

[73neb]

Looks good. Thanks for putting on its own thread. I'm intrigued by the radiator coil, will try to make some if I can find the time.

 

[Boden]

Looks good. Thanks for putting on its own thread. I'm intrigued by the radiator coil, will try to make some if I can find the time.

This may help

 

[DavidOck]

Is the quenching needed, or just done so you can get the vid done in a reasonable time? (Obviously the coil and rods will be hot for some time! )

And would it vape better if quenched in, say, the blood of the FDA?

 

[AzPlumber]

I hope you didn't do all this in one sitting

Great job and explained very well.

 

[Boden]

Is the quenching needed, or just done so you can get the vid done in a reasonable time? (Obviously the coil and rods will be hot for some time! )

And would it vape better if quenched in, say, the blood of the FDA?

I quench the wire to keep it from forming a thick oxide layer. You could cool it slowly in a oxygen free environment if you wanted it really soft.

Would you vape on a coil dipped in that toxic quagmire?

I hope you didn't do all this in one sitting

Great job and explained very well.

Thanks, I've been working on this since June 27th.

 

[AzPlumber]

Do you have a theory on the parallel vs radiator?

I suspect the radiator is more aerodynamic allowing better airflow across the coil.

 

[Boden]

Do you have a theory on the parallel vs radiator?

I suspect the radiator is more aerodynamic allowing better airflow across the coil.

You are correct. Given the same circumference the radiator shape has less than half the drag coefficient of a round coil.

 

[Boden]

Mr. Dean the Vaping Biker just gave me an idea of something new to test. A SS 28ga parallel build. I have no idea what the results will be.

Excellent

 

[DavidOck]

And would it vape better if quenched in, say, the blood of the FDA?

Would you vape on a coil dipped in that toxic quagmire?

Well, no, but I'd get a lot of satisfaction anyway!!

I suspect the same or similar oxide layer would form on kanthal w/o quenching? (Note to self: put water and vodka in different shaped glasses when trying this.)

 

[Boden]

I suspect the same or similar oxide layer would form on kanthal w/o quenching?

All the coils so far are Kanthal A1. With SS it would not matter as much but you might get scale which would be brittle.

You just need a cup of water.

 

[Boden]

Under test tomorrow parallel 28ga 430SS

Nice even glow

Shiny

 

[Boden]

I am genuinely curious about this test but more importantly I don't care what the results are. So many people have said SS acts differently than Kanthal. Heats up faster or slower, different flavor etc.

With this testing protocol I'm getting very consistent results +/- 0.0002mL/puff resolution. So if there is a diference this should find it.

Starting off the flavor and the heat is about the same as the 28ga Kanthal round build. Having done this 14 times with the same juice I'm getting pretty honed in.

Let the game begin

 

[Boden]

For anyone reading this, the test takes about 4-6 hours to complete depending on the effiency of the coil.

 

[DavidOck]

Vape faster