vortex cap size

Building or modifying BB, Airsoft, and pellet types of guns. Target practice only!
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covey12
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hey i am about to make an m16 vortex cap gun, and was wondering how the diameter of the cap relates to Rate Of Fire/ Velocity

i want to go more on the faster rate of fire if there is a difference, so what would the best size be
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psycix
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Since no-one replied, I'll take my chances.

I'm not sure of it, but I could imagine that a larger vortex block/cap has a lower rate of fire as there is less chance of a BB to be at the opening at the right time.
I think it does not matter much in terms of velocity.
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Davidvaini
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3/4" cap with 3/4 pipe stuck through it.
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covey12
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Davidvaini wrote:3/4" cap with 3/4 pipe stuck through it.
k ty, and the comment above this, i see you were the first to put this idea on this forum so ill take your advice after seeing that convincing p90 you have, i thought it was funny thought that i had unknowingly built one of these with one of those little playdoh containers along time ago that you blow in
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