Author Topic: What causes pellets to spiral?  (Read 227 times)

steveoh

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What causes pellets to spiral?
« on: May 23, 2020, 10:21:20 AM »
What causes pellets to spiral? This is another really informative video By Matt Dubber.

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Alan

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Re: What causes pellets to spiral?
« Reply #1 on: May 23, 2020, 10:45:58 AM »
This works:
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Alan

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steveoh

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Re: What causes pellets to spiral?
« Reply #2 on: May 23, 2020, 11:31:11 AM »
Doh!
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Chickenthief

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Re: What causes pellets to spiral?
« Reply #3 on: May 23, 2020, 01:55:37 PM »
This video actually shows instability:
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Alan

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Re: What causes pellets to spiral?
« Reply #4 on: May 23, 2020, 02:29:40 PM »
Ditto Doh!
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Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

rsterne

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Re: What causes pellets to spiral?
« Reply #5 on: May 23, 2020, 07:34:38 PM »
The root cause of spiralling is dynamic instability.... This often occurs at longer ranges because the forward velocity decays faster than the RPM.... This can trip a pellet over the line between being dynamically stable and unstable.... There are two common solutions to spiralling.... Reduce the velocity or reduce the twist rate.... Both reduce the RPM....

Bob
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