I think this is going to depend on the ID of the wraps...
but here is some info for you about Kanthal A1 Flat Ribbon
0.9 x 0.1 mm - 0.466 66 Ohm / in <-- stupid filter stopped me from writing three consecutive 6s
0.8 x 0.1 mm - 0.48000 Ohm / in
0.7 x 0.1 mm - 0.54833 Ohm / in
0.6 x 0.1 mm - 0.64000 Ohm / in
0.5 x 0.1 mm - 0.76666 Ohm / in
0.4 x 0.1 mm - 0.95000 Ohm / in
vs. for round Kanthal A-1 (ohms/inch):
20 0.07
21 0.09
22 0.11
23 0.14
24 0.18
25 0.23
26 0.29
27 0.36
28 0.46
29 0.57
30 0.72
31 0.91
32 1.15
33 1.45
34 1.84
Googled.
Use this: http://www.steam-engine.org/coil.asp
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