A Felt Ring Burner : A Cheap and Efficient Ring of Fire

[jreaper23]

Great video. Personally I use a chewing tobacco tin. Skoals is the brand and a chunk of carbon felt. The top of the can is steel. It is very small light and gets 2 cups of water to boil in about 5 minutes or so. I also like your setup that you have here as well. Keep up the good work.

[flyefysch]

Great video, love your use of data and controls. The tins look great. Do you know of anyplace to buy them individually?

[GDeadphans]

I am really glad you got the DIY bug, combined with your analytical approach = me being able to make well educated decisions. Appreciate the work!

[AlyxGnosis]

@ProfessorHammock I built one of these using the smaller 1 oz. container (TND1, 1.5 inch diameter) with the carbon felt ring. It boiled 2 cups of water in 9 minutes using 2/3 oz of fuel with the pot resting 1 inch above the top of the stove. Flame-out occurred at 20 minutes. The smaller TND1 stove reminds me of the bongo stove that Tinny at Minibull Designs has made.

[daddated1]

I have tried your idea before I saw your video. Just made my video showing my stove.Go to my videos to watch. Thanks for your great videos. I also got a littlbug sr after your video showed the small one. Appreciate the info you share. Ted.

[whoopieslings]

Good work Professor! I like your analytical approach. BTW, there is no cure for the DIT alcohol stove bug. I've been suffering from it for years. Your table looks like the slate from a billiards table.

[ProfessorHammock]

@whoopieslings Good eye! That's exactly what that table is. You should see the fancy iron support underneath. I don't know the history of the table, we "inherited" it when we bought the house.

[deanznz]

very frugal design you have there. What about this, get a tin that is taller and larger diameter that your stove, punch holes around the top edge and make approx 20 mm hole in the bottom, place up side down on your stove, the idea is to get the fuel container hotter, but then again that close fitting windscreen may already be achieving this effect. Love the graph too.

[hillbillybushcraft]

Nice Video. Shug mentioned you in his video. Subbed. Look forward to many more.

[morninghope1]

Professor what is the bottle size you bought?  Was it 2oz Deep Tin Container

[ProfessorHammock]

@morninghope1 Yes, the 2 oz TND2 is the one.

[btsseeker]

Thanks professor!! Another good video. I appreciate the detail and explanation. Too frequently while watching some other video an important detail is missing. Anyway, I had been wondering about the carbon felt and where to get it. Thanks!!

[ProfessorHammock]

@btsseeker yes, I know what you mean about wanting details about where to get things seen. I try to put myself in the place of the viewer and ask "What would I like to see right now?"

thanks for watching

[morninghope1]

One of the most thorough and informative video I've seen in a while. Love everything about this video. I especially love the graphs you provided. Extremely informative. Thank you!

[ProfessorHammock]

@morninghope1 Thanks very much. I noddled a while on how to present that data, and once I saw I could easily change the color of a time-series line in PowerPoint, the highlighting approach suggested itself. We left-brained types like data!

[ProfessorHammock]

@supertramp71 That's me. Ask a question, get a lecture.

[ProfessorHammock]

@symmetrydesignlab Great quote! It happens that a friend of mine from college is the President of the American Chesterton Society. They had their annual convention in St. Louis this fall, and the Mrs and I went to it. One can tell you appreciate simplicity and clean lines in your stoves as well.

[coolkayaker1]

Geez, that's awesome, Prof. Grizz. You nailed it! One of your criteria not addressed ideally: low fuel use. The excessive burn time is a concern & if one reduces fuel to avoid xcess burn time, it might reduce boil temp, aka boiling (by making it, in effect, a larger container like Fancee Feast, in essence). Thus, to truly reg fuel use efficiently, may need to add as burn (like Tinny's) by some method. Or, does Prof Grizz have other ideas? Your vids are the best, boss.

[jonfong57]

You are dead on target with all of your work. Excellent graphics, I love to see test data. The larger 1 oz fuel volume probably reduces the backpressure in the carbon felt capillaries allowing for the burn rate to increase. The larger diameter has more exposure to air and also increases the burn rate. Keep up the great work!

[ProfessorHammock]

@jonfong57 Thanks, I like the backpressure explanation. Clearly there is more surface and more air in the FF can so the ingredients are there for a hotter burn but Dang! if that's it there is some serious non-linearity going on here. Hmm. I don't suppose I can say that without a 3rd diameter tested. But still....

[Woodenarrows]

Very informative video, plenty of info to digest. Thanks!

[ProfessorHammock]

@Woodenarrows Thanks. Half the fun is doing the background research, and I like to share what I've learned.

[nchiker1971]

Excellent!

[ekhaat]

Tinkering? How do you improve the perfect?

Cheers

[ProfessorHammock]

@ekhaat remains to be seen how "perfect" it turns out to be when in the field!

[RallohE]

Good to see another Grizz production ... and I love the little tin stove ... going to have to make one or two of those for myself

[danderson8127]

i have that size can ... time to make another stove! great video Professor!

[wilemuse]

Thank you for being so thorough! I look forward to more "tinkering"

[bluejeans8001]

Thanks for sharing your results. Wanted to also comment just how enjoyable watching your videos are as you integrate the scientific approach and provide worthwhile information as well as humor and entertainment. Another well done video.

[ArsonHammockHanger]

Interesting results. I use a GSI Minimalist and a cat stove, and yes flames lick up the side. I might go out and find that little can and incorperate it into my system. Thanks.