Acoustic smoker last edition

[strmnd54]

I made a slight modification to the design since operating the unit:
The little brass pipe inserted in the air intake of the smoke chamber was causing a restriction in the air flow and bringing unwanted heat to the speaker ; and was therefore removed as per those pictures:

[strmnd54]

Results of this small modification can be seen in this short video:

http://youtu.be/UUoWjHTJi7Z1uGnVnrbH3GxQ

[strmnd54]

GRRR...

http://youtu.be/aBXrPieV0ac?list=UUoWjH ... nVnrbH3GxQ

[strmnd54]

Removing the brass pipe helped? did you end up sealing the cup around the edges to prevent air from escaping?

No. I need a gap of air between the speaker and the smoke chamber...
Without that gap the speaker would be pulling smoke and heat from the chamber on the negative cycle and would get damaged...
That gap allows the speaker to suck in cool air from outside the chamber and push air into the chamber on the positive cycle...

This early video is a good example of how it works...
http://youtu.be/G0_NRGsAu70

[edpanzer]

Brilliant work waaaaay beyond my skill level it never ceases to amaze me...now you just need the volume to go up as the speed increases and it's proportional (proberbly not as I said don't understand how it works properly)

[strmnd54]

Brilliant work waaaaay beyond my skill level it never ceases to amaze me...now you just need the volume to go up as the speed increases and it's proportional (proberbly not as I said don't understand how it works properly)

The problem with the acoustic smoker is that the speaker will deliver more air pressure a lower frequencies ( more bass) than at higher frequencies...

In our case, low frequency = low RPM; and high frequency= High RPM...

So for the same sound volume at idling and moving, the smoker works opposite of what I want...

This is where the TBS mini shines: The engine sound being reproduced by 6 different sound files ( start, idle, accelerate, moving, decelerated, and shot down )...The volume of each sound file can be adjusted when loaded into the TBS...

For example, when I created the sound files for my Panzer IV; they were all at the same volume...

When I loaded those files in the TBS, I adjusted the volume as follow:
Start, Idling, Shut down = 65%
Accelerate, decelerate = 80%
Moving = 120% ( This gives me some proportional effects for the smoker and help masking the noise of the gearboxes when moving).

[strmnd54]

Oh well!
http://youtu.be/mscEsvFy5p8?list=UUoWjH ... nVnrbH3GxQ

[Trailbiker]

BRILLIANT ! That's just how I'd like mine to work, but so far not having much success. I agree with edpanzer, that perhaps some of these things are beyond my skill set too. A very steep learning curve for somebody with no previous model construction experience.

[X82d Pathfinder]

Okay, inquiring minds want to know: Has anyone figured out how to wire this when using Tamiya electronics?

-Dan

[billpe]

You can't directly as in plug it in and go. You'd need to wire up a switch and then connect it to both the battery and the motor wires so you get power draw and whatever method you use to control the amount of smoke.