Thanks for the info,
I live in hot/cold climate down to minus 30 upto 100.
I want to build rocket outside in my ply walled In gazebo,no insulation(as of yet). It's not a big space 200sf, but it gets real cold. Have a tin roof. 50' of horizontal exhaust would be too much. Should I go with a smaller riser diameter?
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''