Distance from floor channel vertical secondary air tube and port entrance

pollinator

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posted 4 years ago

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Working on my BB RMH and wondered what the recommended distance is from the floor channel vertical secondary air tube and the heat riser port entrance?

Many thanks for any help.

thomas rubino

master rocket scientist

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Location: latitude 47 N.W. montana zone 6A

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posted 4 years ago

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Hi John;
My secondary tubes have the 6" stub set back apx 1"
The tube itself is even with the back wall.
So I would say 3/4" - 1.5" would be acceptable.

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John Harrison

pollinator

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posted 4 years ago

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Thanks very much Thomas - I'll give that a go!

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