Fin rings???

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I'm guessing you mean tube fins here, and are asking about if they get too long.

If I've guessed correctly the answer is yes, you can make them so long they become just more body tube.

If you want to go fast, keep them shorter than their diameter. If you want to go slow, put them at 1.5-2x their diameter.
 
I'm guessing you mean tube fins here, and are asking about if they get too long.

If I've guessed correctly the answer is yes, you can make them so long they become just more body tube.

If you want to go fast, keep them shorter than their diameter. If you want to go slow, put them at 1.5-2x their diameter.
Thank you. Yeah, sleep deprivation leads to some interesting conversations! Just found the Apogee newsletter 335 and will continue to explore that vein. Thanks for taking the time to share
 
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