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My new 30mm 250 shot Cake


Coil

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A Few Fotos:

http://www.piro.projektas.in/forum/uploads/2_saliutai.jpg

http://www.piro.projektas.in/forum/uploads/2_bombetes.jpg

http://www.piro.projektas.in/forum/uploads/2_cake.jpg

And video:

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That was quite amazing! You are really perfecting these!

 

If you don't mind, can I ask how much flash you used in each and how you fused them?

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I really enjoyed watching that, great job "Cake Boss"
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that was excellent,you must put a lot of work in to making those cakes.very repetative, are they plastic shells I would hate to paste that many shells maybe over a year or something or with some help 10/10
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Ventsi: I use 2g of KNO3 50 S 30 Al(dark) 20 flash in each bombete. Fusing is simple: I just ram visco into kitty litter. This is how my bombete look like:

http://www.piro.projektas.in/forum/uploads/2_bombete.jpg

Sorry for my bad english. :rolleyes:

Coil.

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WOW!! That's awsome. Just curious, why do you use a wood plug on top??? Also, how many hours does it take to make something like that? I'm sure you get to a point where you just have basically a manufacturing line lol.
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I wasn´t able to watch the vid, but here are a few questions:

 

- is it right that you´re using low-quality paper, as found in consumer cakes, to roll the units? I found that they´re never made from kraft...

- what´s their wall thickness?

- did you ever use a thinner wall and did you see an improvement in the breaks when swichting to thicker walls?

- why are you using nitrate flash, it´s rather uncommon?

- the wooden top plugs are nice. I found it hard to sufficiently plug the top. The clay bottom plug is something that spoils the case balance in these bombettes, but it´s necessary for the delay.

- what kind (rolled etc.) and size of stars are you usually using for both tailed and color stars? What are they based on, chlorate or perc?

 

Hope you reveal a few details! I´d appreciate a future personal talk by the way, I´ve also been into bombettes for quite a while.

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that was excellent,you must put a lot of work in to making those cakes.very repetative, are they plastic shells I would hate to paste that many shells maybe over a year or something or with some help 10/10

they were paper tubes (take a look at the pics)

 

I wasn´t able to watch the vid, but here are a few questions:

- why are you using nitrate flash, it´s rather uncommon?

 

nitrate flash is fairly common among armatures for breaking cake inserts I have seen it done a few times and do it my self for my 2" sky puke shells and they break well enough

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Hello all, sorry for slow response. I will try to answer to your questions.

 

Portfire: To fuse this cake i use Visco, Fast Visco and Quick match

 

AdmiralDonSnider:

-Yes, I am using low-quality paper.

-About 2 mm

-No, I always use tubes with 2 mm wall thickness.

-I use nitrate flash, because it is powerful enough to me. And in my country perchlorate is not very cheap.

-I use only tailed stars because like i sayed perchlorate is not very cheap for me. Now i am trying to use chlorate stars but i am just starting :) In my cakes i usually use rolled TT (5-6mm) and pumped Win23 (6mm) stars.

 

Sorry for my bad English.

Coil.

Edited by Coil
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yeah, didn't realise they were the bombettes bunched up at first, sorry thought they were something else. Edited by jimbo
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  • 2 weeks later...
BAD ASS, VERY WELL DONE
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  • 5 weeks later...

A Few Fotos:

http://www.piro.projektas.in/forum/uploads/2_saliutai.jpg

http://www.piro.projektas.in/forum/uploads/2_bombetes.jpg

http://www.piro.projektas.in/forum/uploads/2_cake.jpg

And video:

 

 

What type of lift did you use for the bombetts ?

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I´m pretty sure he used 3/4FA or a pulverone equivalent.

 

The only thing that I don´t like about this kind of bombette design is the wooden plug. On the other hand it´s hard to find a good top plug. Many commercial units do use a clay bulkhead pressed in place, others use multiple disks or cardboard end plugs. I tend to think that the clay bulkhead is something that spoils the case balance, as mentioned above. If the top plug is flimsy, the bombettes tend to make a spray or bow-tie type break, nothing symmetric.

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Coil mentioned the lift as being 3-4g of black alder.

I`m making similar sized bombettes (28mm id x 80mm long), if they turn out half as good as Coils i`ll be happy :)

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Coil mentioned the lift as being 3-4g of black alder.

I`m making similar sized bombettes (28mm id x 80mm long), if they turn out half as good as Coils i`ll be happy :)

 

Use a pusher disk (loaded after the lift and before the unit). This drastically reduces the amount of lift needed. 3-4g is plenty for units which I´d say come out at about 30-40 grams each.

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Use a pusher disk (loaded after the lift and before the unit). This drastically reduces the amount of lift needed. 3-4g is plenty for units which I´d say come out at about 30-40 grams each.

 

A simple single disk or a piston? That sounds easy ;)

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A simple single disk or a piston? That sounds easy ;)

 

Just a cardboard/strawboard disk showing a small central hole and matching the tube ID in size. 1g will send the things 25 meters up.

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Is it common for bombettes to have fairly thick bottom bulkheads? I presume the thickness sets the delay timing (encasing the visco) and provides protection during the lift.
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