Help! Smoke Generator(Powder) for RC electric planes

[cdfigueredo]

I wanted to share with you that there is some exciting news but I prefer not to get ahead of myself. As soon as everything is ready I will share with you through this channel. I would like to thank you all for your comments and ideas. Excellent team work.

 

[chickenhawk]

Witch is best-- baby powder-- talcum powder-- corn starch ???? working on my own system, don't have a 3d printer

 

[cdfigueredo]

Witch is best-- baby powder-- talcum powder-- corn starch ???? working on my own system, don't have a 3d printer

I'm not really sure, but as soon as someone prints it out and tests it we can get a better idea. My idea is that the lighter what we use the better.

 

[chickenhawk]

Any idea what the capacity of the tank would be?

 

[cdfigueredo]

Any idea what the capacity of the tank would be?

Not sure, it has to be tested. But the tank can be enlarged with some minor modifications of the model.

 

[cdfigueredo]

Any idea what the capacity of the tank would be?

Making some rough calculations the capacity of the current tank is about 95 cm3 (cubic centimmeters), more or less 95 milliliters. With some simple tests we should be able to estimate how much Smoke time we can get from the amount of powder load.

 

[Tench745]

I think FT leaked your "exciting news" on the last podcast. I can't wait!

 

[cdfigueredo]

I think FT leaked your "exciting news" on the last podcast. I can't wait!

Hahahaha yup!!! But didn't know about the podcast, can u please send me a link?

 

[Tench745]

Hahahaha yup!!! But didn't know about the podcast, can u please send me a link?

Here's the podcast. They mention it at the 15:50 minute mark.

 

[cdfigueredo]

Here's the podcast. They mention it at the 15:50 minute mark.

Thank you

 

[chickenhawk]

As I know nothing about 3D printing, what would some one charge to print ( more or less ) some like this off ?

 

[FlamingRCAirplanes]

Hahahaha yup!!! But didn't know about the podcast, can u please send me a link?

What is it?!? I can’t watch the podcast right now

 

[Matthewdupreez]

@cdfigueredo my friend printed and tested one. No video unfortunately. But it works really well. He increased the size of the outlet hole. To create a vaccum for the powder. And it works!! Really well.
Only thing was (may have been a side effect of increasing the size of the outlet hole) that it didn't last very long. About 12 seconds.

And this was the 150% one I believe. So the capacity is about 200 millilitres.

But it certainly works and it's beautiful.
I think that possibly if the hole was kept smaller it would have lasted longer.

BUT YES IT WORKS!!

 

[cdfigueredo]

As I know nothing about 3D printing, what would some one charge to print ( more or less ) some like this off ?

@cdfigueredo my friend printed and tested one. No video unfortunately. But it works really well. He increased the size of the outlet hole. To create a vaccum for the powder. And it works!! Really well.
Only thing was (may have been a side effect of increasing the size of the outlet hole) that it didn't last very long. About 12 seconds.

And this was the 150% one I believe. So the capacity is about 200 millilitres.

But it certainly works and it's beautiful.
I think that possibly if the hole was kept smaller it would have lasted longer.

BUT YES IT WORKS!!

Wow that's great news!!!! so glad to hear it worked on the first try. I'm sure there are many modifications that will improve the prototype to a finished product.
I'm also thinking of only scaling the tank to 150% and 200% while keeping the walls the same thickness to avoid increasing the weight too much.

Please thank your friend for printing and testing it. And ask him for more details about the model he printed (final scale, weight, observations, how everything fits together during the assembly process, etc...). Some pictures would be very helpful too, and if it's not too much to ask, some video during his next test. I would also like to know what powder he used and what is the extra weight.

 

[cdfigueredo]

What is it?!? I can’t watch the podcast right now

i sent an email to FT crew sharing my prototype and they liked that much that they ended printing it. They will be testing it soon!!!!

 

[cdfigueredo]

@cdfigueredo
Only thing was (may have been a side effect of increasing the size of the outlet hole) that it didn't last very long. About 12 seconds.

And this was the 150% one I believe. So the capacity is about 200 millilitres.

I don't really expect a lot of smoke time because basically to increase the time you have to supply more powder and that increases the weight of the model. A balance must be found to supply the minimum required amount of air to the system to then increase the smoke time to the maximum.

The amount of air required may vary depending on the type of powder used. A lighter powder requires less air to mix than a heavier powder. So my first idea was to use a potentiometer driven radio channel to more accurately control the amount of air entering the system regardless of the type of powder used. And of course, it may also be necessary to modify the diameter of the air outlet.

 

[Matthewdupreez]

I don't really expect a lot of smoke time because basically to increase the time you have to supply more powder and that increases the weight of the model. A balance must be found to supply the minimum required amount of air to the system to then increase the smoke time to the maximum.

The amount of air required may vary depending on the type of powder used. A lighter powder requires less air to mix than a heavier powder. So my first idea was to use a potentiometer driven radio channel to more accurately control the amount of air entering the system regardless of the type of powder used. And of course, it may also be necessary to modify the diameter of the air outlet.

Yes! When I do mine I'll control it with a potentiometer 👍👍

 

[Matthewdupreez]

Wow that's great news!!!! so glad to hear it worked on the first try. I'm sure there are many modifications that will improve the prototype to a finished product.
I'm also thinking of only scaling the tank to 150% and 200% while keeping the walls the same thickness to avoid increasing the weight too much.

Please thank your friend for printing and testing it. And ask him for more details about the model he printed (final scale, weight, observations, how everything fits together during the assembly process, etc...). Some pictures would be very helpful too, and if it's not too much to ask, some video during his next test. I would also like to know what powder he used and what is the extra weight.

Will do 👍

 

[cdfigueredo]

Will do 👍

BTW what plane he used to test it? just curios about.

 

[Matthewdupreez]

BTW what plane he used to test it? just curios about.

60 size stick