Advanced coil build advice

[mannyer]

And the twisting together wouldn't make a difference?

[tim]

Oct 29, 2015 22:19:34 GMT gm111 said:

Oct 29, 2015 15:43:43 GMT mannyer said:

So on that note, with a twisted build how do I figure that out?

If you use say 2 strands of say .4 mm you would get half the ohms of a single strand, it's like that for parallel and I'm pretty sure twisted is the same..

No, twisted is different, the parallel coils have two paths to use, with twisted, there are many, as the current moves from one to the other. The tighter the twist, the less like parallel, and more like thicker wire with *texture*.

[tim]

Oct 29, 2015 22:21:33 GMT mannyer said:

And the twisting together wouldn't make a difference?

Twisting makes a difference. *see above*

[gm111]

Deleted my post as tim answered above..

[mannyer]

Oct 29, 2015 22:28:12 GMT tim said:

Oct 29, 2015 22:19:34 GMT gm111 said:

If you use say 2 strands of say .4 mm you would get half the ohms of a single strand, it's like that for parallel and I'm pretty sure twisted is the same..

No, twisted is different, the parallel coils have two paths to use, with twisted, there are many, as the current moves from one to the other. The tighter the twist, the less like parallel, and more like thicker wire with *texture*.

So in the sense of calculating the build of a coil for a target resistance?

[tim]

Oct 29, 2015 22:48:12 GMT mannyer said:

Oct 29, 2015 22:28:12 GMT tim said:

No, twisted is different, the parallel coils have two paths to use, with twisted, there are many, as the current moves from one to the other. The tighter the twist, the less like parallel, and more like thicker wire with *texture*.

So in the sense of calculating the build of a coil for a target resistance?

You need to use a calculator.

www.steam-engine.org/coil.asp?p=roundmulti&tp=0.5&str=2&dia=0.25&id=2.5&ll=10 uses exactly the same as

www.steam-engine.org/coil.asp?p=roundmulti&str=2&dia=0.25&id=2.5&ll=10 in terms of wire and dimensions on the left, but as you see, the results on the right are very different

The difference is, the first one is twisted, the second parallel.

[mannyer]

Of course...there is a selection on there...forgot a out that. OK so let me throw some shit on the fan right now...just to be difficult hehe

Let's say I intend to make a twisted tiger coil build at a duel set up of 0.2. So obviously make one coil of 0.4 ohms (ish). How do I know what to do to make 0.4? Judging from the comments above, if I were to use the principle of making a twisted coild at 0.4 as the 'tiger' element becomes negligible right?

[tim]

Dunno what a "tiger" coil is, but if it is similar to a clapton, steam-engine has a calc for that. Check out the "Wire wizard" tab, once you get familiar with it, it can show you all you need to know. But, the more complex the coil, the less accurate the prediction, as a lot depends on how well it is twisted/braided/knitted etc. That will depend on your own expertise.

Edit: I have no idea what the outcome of twisted multiple wires, like claptons/fused claptons etc, would be. Apart from more watts to power it. Try it and let us know

[mannyer]

Oct 29, 2015 23:53:07 GMT tim said:

Dunno what a "tiger" coil is, but if it is similar to a clapton, steam-engine has a calc for that. Check out the "Wire wizard" tab, once you get familiar with it, it can show you all you need to know. But, the more complex the coil, the less accurate the prediction, as a lot depends on how well it is twisted/braided/knitted etc. That will depend on your own expertise.

Edit: I have no idea what the outcome of twisted multiple wires, like claptons/fused claptons etc, would be. Apart from more watts to power it. Try it and let us know

Dully noted and so much appreciated Thankyou for your advice!

[thatguy]

It's nearly impossible to make a calculator for coils such as the Clapton as there are so many variables to include. The pitch of the wraps and how tightly they are wound around the core wire will make a difference in the overall resistance. As for twisted wire coils, the pitch of the twists will alter the overall resistance as it varies the amount of wire being used thus altering the effective resistance.

Basic single stand coil resistances vary by 5 factors assuming all coils have the same target diameter and wraps (wire purity, pitch of the wraps, how tightly they are wrapped around the mandrel, leg length). Multi wire coils also need to consider the wrap pitch and how tightly outer wires are wrapped around the core wire. And all types have variable resistance due to temperature.

The best advise I could give is to use a calculator to approximate your coil of choice then adjust up or down by a wrap to suit how you are building your coils and/or buying your wire.

[mannyer]

Oct 30, 2015 1:17:12 GMT thatguy said:

It's nearly impossible to make a calculator for coils such as the Clapton as there are so many variables to include. The pitch of the wraps and how tightly they are wound around the core wire will make a difference in the overall resistance. As for twisted wire coils, the pitch of the twists will alter the overall resistance as it varies the amount of wire being used thus altering the effective resistance.

Basic single stand coil resistances vary by 5 factors assuming all coils have the same target diameter and wraps (wire purity, pitch of the wraps, how tightly they are wrapped around the mandrel, leg length). Multi wire coils also need to consider the wrap pitch and how tightly outer wires are wrapped around the core wire. And all types have variable resistance due to temperature.

The best advise I could give is to use a calculator to approximate your coil of choice then adjust up or down by a wrap to suit how you are building your coils and/or buying your wire.

Wicked thanks bud!