Lou L Posted July 5, 2018 Share Posted July 5, 2018 That sucks so much, I’m jealous! Quote Link to comment Share on other sites More sharing options...
JHCC Posted July 5, 2018 Author Share Posted July 5, 2018 On 6/30/2018 at 9:07 PM, arkie said: Your outside double elbow might be restricting the flow a little (maybe none at all) Yeah, I’m going with “none at all” — or least, not enough to make a difference! Quote Link to comment Share on other sites More sharing options...
JHCC Posted July 8, 2018 Author Share Posted July 8, 2018 In actual use, I found that the hood was sitting very low on the fire and coke was accumulating inside it. I decided to try raising it up about an inch to see if that helped. The initial plan was just to use sand, but that was a bit unstable. Then I remembered salvaging a heavy ring that should work. Here it is sitting on the tuyere: This would obviously be unstable in actual use, so I filled up the space with some sand: And here's the view from inside the flue: If this works as hoped, I'll make up some adobe to replace the sand, just to be a bit more durable and secure. Quote Link to comment Share on other sites More sharing options...
JHCC Posted July 9, 2018 Author Share Posted July 9, 2018 UPDATE: Didn't like the extra height. Going to go back to the way it was before, maybe just with a little sand covering the tuyere. Quote Link to comment Share on other sites More sharing options...
Glenn Posted July 9, 2018 Share Posted July 9, 2018 It is called tweeking the system to your likes. Do not tighten down the bolts until you have what fits you best. Quote Link to comment Share on other sites More sharing options...
JHCC Posted October 30, 2018 Author Share Posted October 30, 2018 Further update: decided to go with the extra height after all, since it allows one to pile the fire higher. I made a spacer out of a 2” tall section of scuba tank, set it on top of the tuyere, and filled it with sand: This works very well. Very stable. Also, since I decided to convert my slack tub into a gas forge, I needed the gasket back for that. It has now been replaced with a stainless steel pot lid salvaged from the side of the road (as my daughter rolled her eyes at her dad’s antics): Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted October 30, 2018 Share Posted October 30, 2018 My daughters have fond memories about dumpster diving with Dad---or at least that is what they tell me! (Tip diving in the UK, IIRC) Quote Link to comment Share on other sites More sharing options...
JHCC Posted October 30, 2018 Author Share Posted October 30, 2018 My parenting goal is to make sure that whatever my kids end up spending on therapy is money well-spent. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted October 30, 2018 Share Posted October 30, 2018 Can I send them a brochure for "Fast Turnaround Acres" a nursing home for your aged parents that won't deplete your inheritance. Quote Link to comment Share on other sites More sharing options...
JHCC Posted October 30, 2018 Author Share Posted October 30, 2018 They already know the folks on the Bequest Acceleration Squad. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted October 30, 2018 Share Posted October 30, 2018 Telling them you are leaving it all to the college; could make home baked goods less stressful. Quote Link to comment Share on other sites More sharing options...
kjbarth Posted January 10, 2019 Share Posted January 10, 2019 I really like this idea but I can't say I understand the principles for how this works well yet. Is the size of the helium tank ideal for this or will a different size tank work just as well as long as it's not too big? I've got 8 old 20lb propane tanks and an old expansion tank from my furnace that is about 10" diameter by 19" long that I collected when I was planning to make propane forges to use before deciding to go with coal. I prefer forging in my garage but have to roll the coal forge out to my driveway. Could this work as well with a propane tank or my expansion tank or are they too big? I've read some comments on other "super sucker" posts that larger volume cubes don't work as well. Quote Link to comment Share on other sites More sharing options...
JHCC Posted January 10, 2019 Author Share Posted January 10, 2019 19 minutes ago, kjbarth said: I can't say I understand the principles for how this works well yet The key is in this paragraph from the top post: Quote The original Super Sucker was designed for use with a 12" dia. flue, with a 10" square opening. On the scaled-down version, that opening is about 8" square, which is roughly the same proportion. The key design concept -- a smaller opening connected to a larger volume that creates a stronger draft -- remains the same. In other words, the cross section of the flue and that of the hood should be approximately the same, and the area of the opening should be about 65-70% of the flue's cross section. So, if you're planning to use a 12" diameter flue (recommended), make your hood from one of the propane tanks, with a 10" square opening. If you are going to use a 10" flue (as I did here), then use the expansion tank and make an 8" square opening. Quote Link to comment Share on other sites More sharing options...
kjbarth Posted January 10, 2019 Share Posted January 10, 2019 Got it and thank you for the re-explanation. Quote Link to comment Share on other sites More sharing options...
JHCC Posted January 10, 2019 Author Share Posted January 10, 2019 My pleasure. Quote Link to comment Share on other sites More sharing options...
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