Bell Reducer or Flush Hub Bushing

1 post • Page 1 of 1

mick04u: Recruit; Posts: 2; Joined: Mon Mar 17, 2025 9:26 pm

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Thu Mar 20, 2025 12:25 pm

Hello, I’m building a potato gun with a 4” combustion chamber and a 2” barrel. What would be a stronger transition from the 4” to 2” pipe, a bell reducer coupling or a flush hub bushing?

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: Bell Reducer Coupling

: Flush Hub Bushing

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Okay my eyes burn now. Someone please help.

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Bell Reducer or Flush Hub Bushing

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