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can you replace the rice hulls to burst?


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Posted
yes with black powder or granulated charcoal willow best of balsa but uses more powder
Posted
It appears to be wood shavings. Depending on how big they are, it migh tbe difficult to coat them with meal powder.
Posted
I know someone who uses coated pet bedding for burst. It works, but it leaves lots of embers hanging in the sky which I find distracting.
Posted
I second what Nate said. Don't use it, even vermiculite is a better alternative. Stick with rice hulls, cork, cotton seed, or ground corn cob.
Posted

if you know spike

in France they sell in garden of "vermiculite" which is perfect for powder coat;)

Posted
If rice hulls are unavailable to you, try spelt hulls instead. They are larger but quite similar. Some tweaking in the burst fineness or choice is definitely necessary to compensate for the larger granules, but it will work with trial and error.
Posted
Are "Rice Krispies" available to you they work well.
  • 1 year later...
Posted (edited)

I use puffed rice(PR).

And I do "turn" the ratio :ph34r:

 

I use 50g of BP, on 100g of PR.

And add a 2 gram flash bag in the center of my 4" ball shells. (70/30 KP/AL flash)

 

Here you got a video of the result: http://www.youtube.c...?v=3OFXBy-g6RM. (and some mines)

 

Kalle.

Edited by TiE
  • Like 1
Posted
can i use barley ? or rice ? between why we need BPCRH , does it more faster than granular bp ?
Posted (edited)
-deleted- Edited by nater
Posted

can i use barley ? or rice ? between why we need BPCRH , does it more faster than granular bp ?

 

They wouldn't be ideal. The purpose of the rice hulls is to take up space while being light weight, when making a shell you only need a certain amount of powder for the burst but the amount of space in the shell is more than that so you need some sort of filler. You can't just mix the filler in with the burst because it would slow it down so you coat the burst charge onto the filler. You still get good propagation and don't waste BP like you would if you just filled the shell with pulverone, and you want it to be light because otherwise you have to waste BP in your lift.

Posted
i had search up and down , local store , i cant find any rice hulls.
Posted

Hi superspike,cool thing to see you back here ;)

 

I use the same thing on the picture,I use Rabbit litter,it to do the job ! And it's cheaper and more fluffy than rice hulls ! (where i live) I use 4part of bp to 1part of saw dust ;) I get powerfull break in canister and ball shell

 

Val77,Vermiculite is good but compressible,less fluffy and very xpensive in france (8.99€/500GR)

Posted

look at shops which are selling things for home made heat pillows. (Maybe also art stores or more likely sewing stores). They sell all kinds of hulls like, barley, millet as fillings for them.

 

They also carry canola seeds

Posted
Try suppliers that sell ingredients for home made beer. Not your typical local pre-made fast brew concoction stores - they probably won't have a clue what you are talking about. Rice hulls are used in the more traditional methods of beer making, so do some searching for those suppliers. That's where I get my rice hulls from.
Posted
Can I use hamster litter. Something similar like the photos you post
  • 1 month later...
Posted

An old topic but it seemed like the best place for this. I've just been checking out the density of chopped wheat straw 1/4 inch (chopped but not crushed) and I'm getting a density for it at 0.07 against rice husks at 0.12. Wouldn't a lower density carrier work better? It seems as though everyone has their ideas but no facts.

Posted

I'd be worried that the material is too compressible to be all that great of a burst carrier. From some images I pulled up it also looks to be quite long strands still. This might make things sort of difficult. I'd also be worried about the material smouldering in the air, detracting from the effect at best or causing fallout issues at worst.

Posted

Roll BP onto Rice Krispies as cores -Budget or store own brand Krispies are cheaper.

Posted

Krispies are attractive but my experience with eating them is that they go soggy ... :wacko: For sure the test I did on chopping the straw gives a non-compressible matrix when dry. I haven't tried it damp though. As for smouldering - could be but if it's less dense isn't it going to be less material to burn - unless the ash content of rice husks is about 45%. Hmm a quick web search indicates upto 20% ash for rice husks and 6% for straw.

  • 4 weeks later...
Posted (edited)
Hi everyone, I have been using BP (ball milled) on Rice Krispies for 2yrs. & it works like a charm...get yourself a spray bottle of alcohol water mix, same mix for making stars...put them in a bowl about halfway up a big mixing bowl, spray them lightly enough so that they don't stick to each other,then put them into a separate container that has a lid, put the moist Rice Krispies in , then put about 3 to 4 tablespoons of BP, close the lid and shake it up for about a minute(they all should be coated well),then put them on a paper towel to dry if you have a drying screen, then put the paper towel on top of the drying screen to absorb any moisture, let it sit for about 2 days or so(until they're dry, test a few first to see how fast it burns)works great for any shell...I primarily use 3 inch shells. Hope this helps...please let me know how it turned out Thanks. Edited by BPgorilla
Posted

Krispies are attractive but my experience with eating them is that they go soggy ... :wacko: For sure the test I did on chopping the straw gives a non-compressible matrix when dry. I haven't tried it damp though. As for smouldering - could be but if it's less dense isn't it going to be less material to burn - unless the ash content of rice husks is about 45%. Hmm a quick web search indicates upto 20% ash for rice husks and 6% for straw.

you're right about the soggy part, if you dampen them too much.
Posted

The cheaper generic puffed rice cereals (not the same as rice krispies) don't go soggy nearly as easily. Unfortunately for smaller shell builders they also are somewhat larger. The size does shrink if you get them wetter, so maybe you could just do that intentionally. With puffed rice I always had to wet and coat several times until they would take up enough burst. I typically used around a 4:1 ratio. I actually just shake them over a 4 mesh screen. Everything that sits I use for bigger shell burst, and everything that falls through I use for smaller shell burst and inner petals.

Posted
I've also seen people using grass seeds instead of rice hulls.
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