• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies living kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market permies.com all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • raven ranson
  • paul wheaton
  • Jocelyn Campbell
  • Julia Winter
stewards:
  • Burra Maluca
  • Devaka Cooray
  • Bill Erickson
garden masters:
  • Joylynn Hardesty
  • Bryant RedHawk
  • Mike Jay
gardeners:
  • Joseph Lofthouse
  • Dan Boone
  • Daron Williams

8” system with 6” hole in cieling?  RSS feed

 
Posts: 74
Location: North Idaho at 975m elevation on steep western slope, 60cm annual precipitation, zone 4
1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Anyone have experience? I know you can do this with normal wood stoves. The previous owner did stuff I need not explain but basically secured that only a 6” pipe can go through the cieling, but I want an 8” system. Will it work? How much vertical draw will I need for the transition to not throttle it and back draft?
 
gardener
Posts: 2706
Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
93
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
If you search well, there is a subject about the exact same situation, may be two years old. Or more.
 
gardener
Posts: 1258
Location: latitude 47 N.W. montana zone 6A
113
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Planning on doing that this summer.
  Replacing my old standard double barrel stove in the shop with an 8" J tube and a double brick bell. It will have a 20' rise up to the roof with most of it being 8" but the roof has a 6" metal bestos chimney so reduce to 6" for the last 2'.
I know that Matt Walker and others have done this.  I expect/ hope for , no issues with it.
 
gardener
Posts: 2581
Location: Upstate NY, zone 5
92
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You would want a smooth, gradual reduction to reduce the throttling effect. I would say that an 8" to 6" reducer 6" long would probably be enough.
 
Posts: 5
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
This thread describes a J type rocket where the flu goes down from a 8" to 5" before it exits the house:
http://donkey32.proboards.com/thread/2439/tell-burning-clean
 
when your children are suffering from your punishment, tell your them it will help them write good poetry when they are older. Like this tiny ad:
Would you replace your oven with a rocket oven?
https://permies.com/t/90099/replace-oven-rocket-oven
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!