General Model Sounds
- Thread starter Jimbo
- Start date
Tony
Staff member
Unfortunately I don't. Never really got into it since all of the mixing that I ever did, elevons, flaperons and so on, were already mixed with a single setting. But, I know Steve has done mixing before and has a greater understanding of it than I do. I do need to get that video done though lol.
Jimbo
Member
Had a long exchange with Andrew (Mr RC Sound). He admits that he has no experience with helicopters and did not know that the engine sound did not go up and down with the throttle. The sound is linked to the throttle on the card and a mix will not change this. Long story short is, the helicopter sounds will not work correctly or sound right. If you go with one of the other systems, it would be best to check with them first to determine how theirs functions.
Jim
Jim
Jimbo
Member
That is exactly correct Neil. On the Huey and Cobra, the pilot brings up the N1 turbine to 6600 RPM (main rotor speed 324 rpm) and there it remained. The Mr RC Sound card, has the sound about right at 25%, but gets faster as you increase the throttle. So once you flip to IU1, which I set at 75%, it is way too fast and sounds all wrong. His card has a lot of "coding" to get it to do this and changing it is not in the cards.
Jim
Jim
holtneil
Active Member
Is there a way to add a mix on another channel and use this to give the Card what it thinks is a throttle input at the right RPM if not have a chat with the guys at Benedini Modellbauelektronik they do a sound chip for the UH-1 heli
Jimbo
Member
Neil, according to Mr RC Sound, it is tied to the throttle and can not be separated out. The clip above is not correct either. When that Cobra is sitting on the ground, in idle, it sounds close. But when they spool it up, you lose the sound of the rotor blades and hear the engine getting louder. It is the slow, steady, whop, whop, whop, of the blades that you hear, not the engine. I sat in the open door, directly under the rotor head, with my back against the transmission well, for 500+ hours. 
Jim
This is what you hear:
Here is another one:
At about 3:25, you hear it coming up to flight idle and the whop, whop, whop starts.
Jim
This is what you hear:
Here is another one:
At about 3:25, you hear it coming up to flight idle and the whop, whop, whop starts.
Jimbo
Member
My 450 will take two, 2" speakers just fine, which would carry the deeper tones, that the Huey needs, instead of transducers. On this video, skip ahead to about 8:32 and you will see it fly. He admits at the end, that it was too fast, but at half throttle it was perfect. The folks at Shockwave, said they can set it up, so the throttle is not involved and the sound rpm can be set wherever I want it and they wil put any sound recording I want on the SD card. Gentlemen, I think that this is the one.
Jim
Jim