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Post by satamax on May 30, 2013 8:42:20 GMT -8
Hi everybody.
Well, daft question. I've searched, but didn't find an answer. Can a bell be made of normal bricks? I know if the rocket is in it, the top at least should be refractory.
Thanks a lot.
Max.
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Post by peterberg on May 30, 2013 10:02:01 GMT -8
Yes, could be done with normal bricks. And concrete blocks, cob, granite or whatever. The top part, in general everything above the mouth of the riser do need something fireproof. A liner of fire bricks, split fire bricks (the thin variant), superwool, steel, etcetera. Or simply an oil barrel.
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Post by satamax on May 30, 2013 11:34:51 GMT -8
Thanks a lot Peter.
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Post by sibelius on Nov 1, 2018 0:58:58 GMT -8
How about a 4 cm slab of normal beton for the top ou the bell? Would it resist the trawler?
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Post by coastalrocketeer on Nov 4, 2018 15:34:29 GMT -8
I'm not sure what beton or trawler mean in your question
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Post by peterberg on Nov 5, 2018 2:10:55 GMT -8
Beton is another word for concrete, trawler in this sense I don't know.
But... don't use normal concrete for the top of a bell, that cap can easily reach 500 ºC, at which temperature the silicium christals in there goes from one shape to another. Together with a large expansion of the material, so it will surely crack spectacularly.
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Post by etownandrew on Nov 5, 2018 16:27:08 GMT -8
I'm about halfway done building my bell with small red clay bricks. It is taking a long time and I am wishing I had gone with a larger brick or block shape to speed things up.
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