elliptical coil calculator?

[useus]

as the title suggests, I want to build one but I think it is necessary to rely on a calculation for the elliptical dimensions. I have not found anything online.

[Skippy]

There is plenty of discussion about this subject on the forum. Here are two recent threads:
https://www.geotech1.com/forums/show...nd-square-coil
and:
https://www.geotech1.com/forums/show...oil-Calculator

In summary: either:

( a ) Work out the circumference of your elliptic coil. Calculate the radius of an equivalent circular coil with that circumference. Use this calculated radius in the Forum "Coil Calculator" , but allow for a small percentage drop in L, due to the shape. Approx 4% for a very elliptic shape, like 2.5:1; or 2% for 1.5:1 ratio. That is - theoretically aim for 2% greater than required, so that the finished coil is the correct value.

( b ) Calculate the value: 0.25 x ( longest diameter + shortest diameter ) , and use this as the radius in the "Coil Calculator".

[useus]

There is plenty of discussion about this subject on the forum. Here are two recent threads:
https://www.geotech1.com/forums/show...nd-square-coil
and:
https://www.geotech1.com/forums/show...oil-Calculator

In summary: either:

( a ) Work out the circumference of your elliptic coil. Calculate the radius of an equivalent circular coil with that circumference. Use this calculated radius in the Forum "Coil Calculator" , but allow for a small percentage drop in L, due to the shape. Approx 4% for a very elliptic shape, like 2.5:1; or 2% for 1.5:1 ratio. That is - theoretically aim for 2% greater than required, so that the finished coil is the correct value.

( b ) Calculate the value: 0.25 x ( longest diameter + shortest diameter ) , and use this as the radius in the "Coil Calculator".

it is not clear to me, I use a translator.
can you help me calculate a 5" circular coil? use 1.5: 1 , 2:1 and 2.5:1 ratios then I evaluate the best option


thanks!

[useus]

I prepared everything!


now I just have to wrap. In your opinion, instead of doing a multilayer wrapping, can you do flat spiral?

[Skippy]

I know nothing about flat spiral coils, they are for P.I , and I have never made a P.I coil.
Maybe someone else on the Forum can assist you ?

[6666]

Here is a shape generator https://www.blocklayer.com/oval-templates.aspx

[Carl-NC]

Wow, there's some useful stuff on that site.

[useus]

Here is a shape generator https://www.blocklayer.com/oval-templates.aspx

very nice link!

[useus]

I know nothing about flat spiral coils, they are for P.I , and I have never made a P.I coil.
Maybe someone else on the Forum can assist you ?

I already have one but it's bigger and more circular, it works which is a marvel!
for this reason I asked if it is also feasible to build it in an oval shape

[Carl-NC]

You can make a flat spiral in any shape you want.

[surfdetector]

@6666
That is indeed a very useful tool. Thank you for sharing the link.
Cheers