I've been building a DSR2 batch rocket core using Superwool HT board for the heat riser and top box lining. Superwool is biosoluable, which is why I am using it.
This board was rated at 1300C by the seller. However the datasheet says Classification Temperature: 1275C Continous use temperature: 1177C
When I pulled the core out of the bell after the first burn, I noticed that *some* edges of the Superwool board were 'fluffy' and disintegrating. I noticed this on *one* of the two very small pieces to either side of the top box exit port (the piece on the other side was OK!). I didn't notice this kind of damage in the heat riser, even though I've heard this is the hottest part of the system.
Anyone got any experience of using Superwool HT board in a batch rocket or DSR2? Any one seen this kind of damage?
The edges of the piece of Fibrefrax duraboard brand CFB I bought a few years ago were so fragile and easily abraded that I ended up wrapping the board in clingfilm until the stove was ready for the first firing. It's done 2 full winters in the stove since and been fine otherwise.
Wondering if it's anything like the stuff I just tested. Posted a 40 second video of my results here youtu.be/lwmUGAVHQtk and started a new thread about it. Have you continued to use your questionable material with ok results?
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
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mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
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topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
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ahansen: photos under 1 mb not possible?
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belgiangulch: Photo's are possible. They must be downloaded elsewhere and the image url (adress) is copyied.
Sept 14, 2020 7:26:15 GMT -8
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Sept 14, 2020 7:29:27 GMT -8
deadstarsstillburn: Hi there. I was directed this way by folks on the Permies.com website and am hoping I can get some information on how a total newbie can get started designing, siting, building, and not-dying-in-a-horrible-house-fire with a new RMH in a 160-year old home
Oct 21, 2020 6:52:10 GMT -8
deadstarsstillburn: The people over there recommended either a 6" batchbox or an 8" J-tube. I don't know what those are but am going to try to figure that out. What I need is a blueprint that I can scale to fit the need for my house. I have something likne 5000 square feet
Oct 21, 2020 6:53:00 GMT -8
deadstarsstillburn: but I do not need to heat all of it by any means. probably only need to heat half of that, maybe less.
Oct 21, 2020 6:53:15 GMT -8
deadstarsstillburn: moreover, the house has 3 storeys (large attic) so I assume if I get very efficient heating on the ground floor, that will go a long way toward heating the upstairs as well, no?
Oct 21, 2020 6:53:59 GMT -8
BenAlexanderT: Happy new year everybody. I wish you the best
Dec 31, 2020 15:06:14 GMT -8
Solomon: Anybody in Southern Oregon, in Jackson or Josephine counties?
Jan 16, 2021 21:54:43 GMT -8
gnomedome: i realsie this is from 2009
Apr 14, 2021 8:30:44 GMT -8
gnomedome: i realize this is from 2009 id love to see the photos from this ..as im looking to build a sauna soon similar to this .... if anyody sees this post firstname.lastname@example.org..... the photos in this post did not show up
Apr 14, 2021 8:32:00 GMT -8