@@AndrewJacksonDesignStudio Each rotation is averaged, but a single one is not. You can find that for a single rotation, the first half and the second half have different distances.
If I understand you correctly, you are saying the inside half of each revolution and the outside of each revolution has a different resultant length helical path length, per pitch length/revolution? That is expected though, as the pitch is the driven input. If instead of sweeping a helix along the spiral, we swept a circle of the same diameter as the outside of the helix along it, then split the spiral tube in half, the inner edge length of the spiral is shorter than the outside. If you want the inside and outside of the helical path to be equal, that means the spiral has to be a line. Another thing that I was thinking that proves out in the CAD model is that the helical path for each revolution gets shorter from the inside of the spiral to the outside, which is because the curvature of the spiral is reducing. Again, the centreline pitch is the driving geometry, so the helical path is resultant.
@@AndrewJacksonDesignStudio Each segments/centreline still not equal. Make a face curves you can find one segments is same not equal pitch problem. I hope I can make it clear this time.😂
The spiral path segments are equal in length. You can measure them in the spiral sketch that has been split into segments. The person that posted this issue wanted equal length pitch on the spiral centreline and this ended up working for them so that’s good right?
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But each half circle has a different length
Not sure what you’re referring to?
@@AndrewJacksonDesignStudio Each rotation is averaged, but a single one is not. You can find that for a single rotation, the first half and the second half have different distances.
If I understand you correctly, you are saying the inside half of each revolution and the outside of each revolution has a different resultant length helical path length, per pitch length/revolution? That is expected though, as the pitch is the driven input. If instead of sweeping a helix along the spiral, we swept a circle of the same diameter as the outside of the helix along it, then split the spiral tube in half, the inner edge length of the spiral is shorter than the outside. If you want the inside and outside of the helical path to be equal, that means the spiral has to be a line.
Another thing that I was thinking that proves out in the CAD model is that the helical path for each revolution gets shorter from the inside of the spiral to the outside, which is because the curvature of the spiral is reducing. Again, the centreline pitch is the driving geometry, so the helical path is resultant.
@@AndrewJacksonDesignStudio Each segments/centreline still not equal. Make a face curves you can find one segments is same not equal pitch problem. I hope I can make it clear this time.😂
The spiral path segments are equal in length. You can measure them in the spiral sketch that has been split into segments. The person that posted this issue wanted equal length pitch on the spiral centreline and this ended up working for them so that’s good right?