|
|
Post by satamax on Mar 6, 2014 22:47:21 GMT -8
|
|
morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
|
Post by morticcio on Mar 7, 2014 2:22:30 GMT -8
Max,
If it's a temporary stove and you get these for free, these are okay to experiment with, but from my experience these are totally unsuitable for 'permanent' use in a riser. I used some similar to these that I'd salvaged as a riser in a J tube - they cracked and showed signs of stress within 4 or 5 burns. A metal riser lasted longer than this!
I have to agree with Robert, the last thing you want to do is take it all apart after these have failed and rebuild it with more heat resistant materials.
They are expensive here in the UK so I'd rather spend my money on a decent product in the first place.
For anyone that's interested, here is the link to the technical info for the Schiedel liners.
|
|
|
|
Post by satamax on Mar 7, 2014 3:56:36 GMT -8
Well Morticio, i'll disagree.
I have used the equivalent from Landini SPA. and, they sure do crack, once or twice, but then, they don't move anymore. I mean, they expand and contract, but don't fail. Peter advised to make one lenghwise cut in them so they don't crack. I don't even bother. And they can cope with better than 1000C° for 30 minutes. What i do with theses i put a steel tube around, and pack the space in between with vermiculite or rockwool. It's soo simple, that it's made for dumbasses like me.
Are you sure the ones you used were Schiedel's flue liners? And not some random clay chimney pots, with no chamotte in it?
|
|
morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
|
Post by morticcio on Mar 7, 2014 4:37:20 GMT -8
They are Hanson Red Bank clay flue liners with the same rating as the Schiedel. I don't know if they have chamotte in them.
|
|
|
|
Post by satamax on Mar 7, 2014 6:33:36 GMT -8
They are Hanson Red Bank clay flue liners with the same rating as the Schiedel. I don't know if they have chamotte in them. Is it smooth, or you can see grains on the surface? It would be quite astonishing that it fails if it's grainy. In the batch rocket i have, i get the landini tubes to orange glowing with no adverse effects. |
|
|
|
Post by satamax on Mar 7, 2014 6:42:04 GMT -8
|
|
morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
|
Post by morticcio on Mar 7, 2014 11:39:44 GMT -8
Smooth... Will have to confirm what type - I'll check the markings on them tomorrow and let you know.
|
|
|
|
Post by smarty on Mar 24, 2014 8:31:36 GMT -8
I'm wondering if you couldn't make something similar out of clay slip and chopped fiberglass strand mat over a former that could be burned out, or even soak broken up pieces of ceramic fibre in clay slip of some kind? The slip needs to fire at a suitable temperature though, and I would say, preferably hotter than it will get in service so maybe fire it inside and out with charcoal in a drum or something - lit from the bottom and with air holes in the bottom. This would make it like the stuff you back ceramic shell up with but without the shell.
|
|
morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
|
Post by morticcio on May 6, 2014 2:58:42 GMT -8
|
|
|
|
Post by satamax on May 6, 2014 4:37:03 GMT -8
Well, never mind. Thoses flue liners don't have much chamote in them, and that red collor makes me thing they are just plain clay tubes, which are sure to crack. Look at the clay tubes i'm using  Realy not the same stuff, so, hanson's red bank is rulled out of rockets then. |
|
morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
|
Post by morticcio on May 6, 2014 7:47:06 GMT -8
It seems the UK hasn't discovered the benefits of chamotte in their flue/chimney products yet!
They're not redundant though - I place stainless baking racks between each tube and hang strips of marinated beef over them and use them for smoking jerky. I can go five high before it gets too unstable :-)
|
|
|
|
Post by satamax on May 6, 2014 9:09:42 GMT -8
|
|
|
|
Post by satamax on Aug 8, 2014 17:47:55 GMT -8
|
|
|
|
Post by ivehadenough17 on Nov 28, 2014 11:41:38 GMT -8
That's a pretty thin wall thickness. I have used some inexpensive ones that I think are similar. The ones I found here are 1/2" wall thickness, and come in 12" lengths. That's what I'm using on my outdoor system, and yes, they work fine and hold up fine. The risers I prefer are the same material in 2" wall thickness, 24" lengths. These are much more expensive, but I prefer them as they are much more robust and provide a lot more insulation. I've found a few suppliers who will do full custom sizes and lengths, but of course that gets real expensive quickly. One cool thing about those thin ones, they make great positive molds for your riser castings, and particularly the lower riser section that's in the core base. You leave the material in there and you have a highly insulated sleeve inside. It's been my favorite core casting trick for a while now. Would you give a link to these please? |
|
|
|
Post by matthewwalker on Nov 28, 2014 20:02:36 GMT -8
I would rather just tell you to find your nearest industrial refractory supplier. They will have all the stuff you need. It's a bit of a hunt for some folks, but it's worth sniffing around. If you want to say generally where you are located, you might find some folks have done the legwork for you. I am not here to sell anyone anything, but I do make the thicker risers available on my walker stoves site since some folks have a hard time finding them locally. They are expensive, so it's way better to find your own local supply. |
|
