OK Guys,

Who will be the 1st to enter a contest with a Merlin in their ECL plane?

Cool Sound, only $32, 2" speaker (in the wing?), light wt.

Go Here for details and sound demo:

http://www.ramrcandramtrack.com/ramdemos/ram167/ram_167demo.html

The Radial Sound is also way cool. This would sound great in Will's Bomber!

Go Here to order from SIG @ $32  (From RAM they are $40):

http://www.sigmfg.com/cgi-bin/dpsmart.exe/MainMenuFV4.html?E+Sig

This project should be easy for you lucky guys that get to have a building season. 

Since I have put in a couple of advanced flights with Russ Gifford as a judge  , I have been trying to figure out how to add a 4-2-4 sound to my electric. This is getting pretty close---but to demonstrate my obsessiveness, I would like the sound to break into a 2 stroke when it goes vertical. I think this would require a slightly smarter sound board and something to monitor either power or directionality.

But I guess I should just concentrate on getting the E-NoblerArf to fly better right now! 

Hi Mike,

It is tempting isn't it?  

Last year someone sent me a link for an English site where the guy had a beautiful giant scale P-47 ERC with an awesome sound system. This may be the same guy you saw? The video showed the system with the cowl off.  It looked like the two speakers were about 5" each. It had an amp. etc. I think he said it cost around $200. It was hooked to his TH servo. At idle, the sound was of a LARGE radial engine with a typical very rough idle, then increased smoothly during the TO. Just like you said, it sounded like a real P-47. In flight it was like someone turned back the clock to 1944 England!

I don't think this $32 system will be as good, but with the very small area we fly in, maybe it would still work well? 100 db is LOUD. My guess is that we could get by with a little less. ;-)

I will keep you posted with the results of my P-40s "Merlin" installation, when it gets here.  

Hi Alan.  Analog Devices makes some relatively inexpensive accelermometers. One of those could be used as the sensor to control the 4-2-4 breaks.  A +/- 5g accelerometer should handle it.  The ADXL320 is about $8 at Digikey.  The page at Analog Devices is :

http://www.analog.com/en/prod/0,,764_800_ADXL320%2C00.html

Dave

heres a video about a giant scale P-47 with a sound system installed, is this the oneyour talking about?
http://media.putfile.com/Sound-equipped-81inch-P-47-Flight-1