Machine gun sound and smoke systems?
#1
Thread Starter
Machine gun sound and smoke systems?
Hello all,
Just wondering anybody can recommend a sound and smoke system to replicate machine gun effects?
Thinking of incorporating in my 1/4 scale WWI SE5a for fuse mounted vickers gun.
I've heard of paint ball gun systems being used and also digital sound effects...has anyone tried anything?
Thanks
Just wondering anybody can recommend a sound and smoke system to replicate machine gun effects?
Thinking of incorporating in my 1/4 scale WWI SE5a for fuse mounted vickers gun.
I've heard of paint ball gun systems being used and also digital sound effects...has anyone tried anything?
Thanks
#2
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RE: Machine gun sound and smoke systems?
A number of Dawn Patrollers in our area are using a modified paint ball gun system for the sound (don't know bout smoke). Results have been varied. But when it woks, it sounds great! All I've seen it used on is 1/3 scale though.
Try Joe Westrich @ [email protected]
Try Joe Westrich @ [email protected]
#3
RE: Machine gun sound and smoke systems?
There's also a link to video on the Ohio Dawn Patrol website (www.ohiodawnpatrol.com) with a Fokker D.VI making a strafing run using the paintball gun system about midway through the video:
http://s11.photobucket.com/albums/a1...courge2008.flv
Pretty effective sound producers, but as Mike points out, so far (to my very limited knowledge) they've only been tried in the 1/3 scale (and larger) models. A great deal of weight can probably be removed from the actual gun, since it's really not firing anything but air - again, Joe and the gang could have some guidance on this.
Best regards,
Lee McDuffee
http://s11.photobucket.com/albums/a1...courge2008.flv
Pretty effective sound producers, but as Mike points out, so far (to my very limited knowledge) they've only been tried in the 1/3 scale (and larger) models. A great deal of weight can probably be removed from the actual gun, since it's really not firing anything but air - again, Joe and the gang could have some guidance on this.
Best regards,
Lee McDuffee
#4
Thread Starter
RE: Machine gun sound and smoke systems?
Thanks guys for the leads.. much appreciated...Gotta do some research on the paint ball gun system..maybe too heavy...sounds decent though.
#5
RE: Machine gun sound and smoke systems?
I'm always wonder whether a simple wooden ratchet "noise maker" couldn't be adapted for this purpose. Flip a switch and a motor spins the ratchet and "pops" the wood slat. Anyone remember the card in the bicycle spoke trick.
http://www.instructables.com/id/Wood...t-Noise-Maker/
http://www.instructables.com/id/Wood...t-Noise-Maker/
#6
RE: Machine gun sound and smoke systems?
The problem with a noise maker, speakers, etc has always been that they're not terribly loud in relation to the motor - the paintball guns are very loud by comparison. Even with a large gas engine, you can still easily hear the gunfire - the video link really doesn't do the sound justice, as the "pop" of the guns echoed off the trees and hills surrounding the flying field in a very convincing fashion.
Lee
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RE: Machine gun sound and smoke systems?
We have tried the 1/4 scale size aircraft with the paint guns but it is way too tight and it really affects the wing loading. We have really cut them down and it still seems to be too much, although the SE5 is a larger aircraft and it may work. 1/3 scale aircraft are very easy.
I have heard the speaker version and even if it was loud enough, it just didn't sound right. We have a guy that purchased it and replaces the speaker with a bigger one. It helped a little.
If you try the speaker, make sure you buy a quiet muffler.
Here is a video from last weekend of my 1/3 scale Fokker DVI with gun firing.
http://www.rcuvideos.com/video/fokke...withguns01-AVI
I have heard the speaker version and even if it was loud enough, it just didn't sound right. We have a guy that purchased it and replaces the speaker with a bigger one. It helped a little.
If you try the speaker, make sure you buy a quiet muffler.
Here is a video from last weekend of my 1/3 scale Fokker DVI with gun firing.
http://www.rcuvideos.com/video/fokke...withguns01-AVI
#8
Thread Starter
RE: Machine gun sound and smoke systems?
Thanks Joe for the good info. and congrats on a nice machine! That gun does sound perfect an completes an excellent flight envelope.
I think I will pass on my SE5 as I want to keep landing speeds resonable after all the work I've put into this project but will try it out on a 1/3 scale for sure, by then I can figure out a way to have some machine gun smoke and muzzle effects to complete it.
Wishing you many good seasons with your model.
Eric
I think I will pass on my SE5 as I want to keep landing speeds resonable after all the work I've put into this project but will try it out on a 1/3 scale for sure, by then I can figure out a way to have some machine gun smoke and muzzle effects to complete it.
Wishing you many good seasons with your model.
Eric
#9
RE: Machine gun sound and smoke systems?
ORIGINAL: Mein Duff
...then I can figure out a way to have some machine gun smoke and muzzle effects to complete it.
...then I can figure out a way to have some machine gun smoke and muzzle effects to complete it.
#11
RE: Machine gun sound and smoke systems?
How about using a little Este rocket motor, firing through a rotary impeller of some kind. It should make noise and emit bursts of smoke and flame. Have to use the tiniest motor since it would be firing backward. I suspect the rate of "fire" would be way too high for WW-I but might be cool on an A-10.
This could be a violation of AMA rules?
This could be a violation of AMA rules?
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RE: Machine gun sound and smoke systems?
Hi, guys. I'd like to introduce my company, Model Solutions of Canada Ltd. We make high performance digital R/C sound systems.
Our latest product, the SFX6, is ultra high performance - plays back at full CD sound quality, has two independent throttle controlled engine sounds for twin engined aircraft (sound speed is proportional to the throttle position), two LED flasher outputs to flash ultra bright LEDs at the end of your gun barrels, a USB port so you can downlaod your own sounds and many other advanced features.
We are also developing a "GPS Enhanced Doppler Shift" feature. With an optional external GPS module (30mm x 30mm x 8mm) the sound module stores its "home" location on power-up. Then as the plane is flying around the sound module computes whether it is approaching, or receding from, the home position i.e. where the pilot is standing. Together with the GPS provide velocity it applies artficial Doppler shift to either increase, or decrease, the pitch of the sound.
These very advanced features and CD sound quality is not available anywhere on any competitors products.
The module has an on-board 40Watt amp. which is usally enough for electric powered planes. But if you have a 1/3 or 1/4 scale plane wth an I.C. engine then you have enough payload capacity to have a large external power amp and higher power speakers.
Full details are on our web site at :
[link=http://www.modelsolutions.ca/catalog_sound_systems.htm]http://www.modelsolutions.ca/catalog_sound_systems.htm[/link]
Regards,
David Harrison
CEO/Chief Engineer
Model Solutions of Canada Ltd.
Ottawa, Canada
Our latest product, the SFX6, is ultra high performance - plays back at full CD sound quality, has two independent throttle controlled engine sounds for twin engined aircraft (sound speed is proportional to the throttle position), two LED flasher outputs to flash ultra bright LEDs at the end of your gun barrels, a USB port so you can downlaod your own sounds and many other advanced features.
We are also developing a "GPS Enhanced Doppler Shift" feature. With an optional external GPS module (30mm x 30mm x 8mm) the sound module stores its "home" location on power-up. Then as the plane is flying around the sound module computes whether it is approaching, or receding from, the home position i.e. where the pilot is standing. Together with the GPS provide velocity it applies artficial Doppler shift to either increase, or decrease, the pitch of the sound.
These very advanced features and CD sound quality is not available anywhere on any competitors products.
The module has an on-board 40Watt amp. which is usally enough for electric powered planes. But if you have a 1/3 or 1/4 scale plane wth an I.C. engine then you have enough payload capacity to have a large external power amp and higher power speakers.
Full details are on our web site at :
[link=http://www.modelsolutions.ca/catalog_sound_systems.htm]http://www.modelsolutions.ca/catalog_sound_systems.htm[/link]
Regards,
David Harrison
CEO/Chief Engineer
Model Solutions of Canada Ltd.
Ottawa, Canada
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RE: Machine gun sound and smoke systems?
David,
Does the GPS option offered with your sound system provide model altitude above ground (AGL) information to the sound system? I have been thinking of using a GPS altimeter as part of a sound effect system for dummy bombs to be dropped from my 1/9 scale B-25. A sound system and speakers aboard the model would produce the whistle of the falling bombs followed by the sound of the blast as they hit the ground. The sticking point is timing - the sound system must issue the blast noise(s) the instant the dummy bomb(s) hit the ground. That time could be computed from GPS altitude information. I am wondering if your new sound system with GPS might fill this role.
regards,
Bob
Does the GPS option offered with your sound system provide model altitude above ground (AGL) information to the sound system? I have been thinking of using a GPS altimeter as part of a sound effect system for dummy bombs to be dropped from my 1/9 scale B-25. A sound system and speakers aboard the model would produce the whistle of the falling bombs followed by the sound of the blast as they hit the ground. The sticking point is timing - the sound system must issue the blast noise(s) the instant the dummy bomb(s) hit the ground. That time could be computed from GPS altitude information. I am wondering if your new sound system with GPS might fill this role.
regards,
Bob
#15
RE: Machine gun sound and smoke systems?
Just curious, why it would be necessary to fake doppler shift? Wouldn't this just be a naturally occurring effect of a moving sound?
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RE: Machine gun sound and smoke systems?
First of all, to abufletcher, the model does produce natural Doppler shift due to its own motion, but it is only a small fraction of the Doppler shift that a real airplane would produce due to the model's much lower velocity. The Doppler shift formula is fo = (vs/(vs +/- vo)) where fo is the observed frequency, fs is the frequency of the sound source, vs is the speed of sound and vo is the velocity of the model relative to the observer. vo is +ve if the model is receding, and -ve if the model is approaching.
Our software will have a"Model Speed Multiplier" option that you can set i.e. if the speed multiplier is 10, then when your model is going 50km/hr, it will sound as though it is going 500km/hr.
Next to bobsnedegar . We hadn't thought of that application for the GPS module, but I see a problem in the attainable accuracy of the GPS module. Most GPS modules, of the type typified by the small OEM modules available, have an accuracy of 10metres. That is approx. 30 feet so the timing of the bomb explosion could be off by quite a bit.
Our software will have a"Model Speed Multiplier" option that you can set i.e. if the speed multiplier is 10, then when your model is going 50km/hr, it will sound as though it is going 500km/hr.
Next to bobsnedegar . We hadn't thought of that application for the GPS module, but I see a problem in the attainable accuracy of the GPS module. Most GPS modules, of the type typified by the small OEM modules available, have an accuracy of 10metres. That is approx. 30 feet so the timing of the bomb explosion could be off by quite a bit.
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RE: Machine gun sound and smoke systems?
Hmmm. Idunno about the doppler effect problem. The doppler effect will affect the frequency in both directions, increasing as the model comes toward you and decreasing when it goes away. The model will have to know its relation to the pilot to know how to change the sound and the model wouldn't just be going toward you or away. There are all sorts of angles, altitudes and directions that would have to be factored. And that is just for the pilot. Other people at the field would probably be put off by the unnatural sounds the plane would make when it is shifting the frequency higher because the plane is going toward the pilot but away from the spectators.
My recommendation is to let nature and physics do their job.
My recommendation is to let nature and physics do their job.
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RE: Machine gun sound and smoke systems?
The artificallly enhanced Doppler shift can only work in relation to one "home" position i.e. the pilot. But if you like the effect, use it, if you don't, then don't use it.
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RE: Machine gun sound and smoke systems?
David, thanks for the reply - if the GPS module's accuracy is +/-30 feet that would be insufficient for my application. I wonder whether an inertial altimeter might be practical. The iPod Touch incorporates 3-axes accelerometers, is programmable and might be adaptable for this purpose - both altitude tracking and sound generation. It is also of course rather heavy for use aboard a model aircraft.
regards,
Bob
regards,
Bob
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RE: Machine gun sound and smoke systems?
Hello, details of the weights and other specifications are on our web site at : http://www.modelsolutions.ca/catalog_sound_systems.htm and http://www.modelsolutions.ca/catalog_speakers.htm but basically here are the figures.
Sound Module 24 grams, speaker 176 grams, wire 20 grams, so total weight is 220 grams - or 1/2 lb. Optional GPS module is 18 grams.
David Harrison
Model Solutions of Canada Ltd.
www.modelsolutions.ca
Sound Module 24 grams, speaker 176 grams, wire 20 grams, so total weight is 220 grams - or 1/2 lb. Optional GPS module is 18 grams.
David Harrison
Model Solutions of Canada Ltd.
www.modelsolutions.ca