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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Making an RC sound like a Huey UH-1
10-07-2017 10:01 PM  33 months ago
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InvertedDude

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USA

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Making an RC sound like a Huey UH-1
Anyone have any ideas on how to make an RC heli sound like a Huey Bell UH-1?

I an trying several different ESC/Motors/Gears.

Any ideas?

Watch at YouTube

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10-07-2017 10:39 PM  33 months ago
crflyer

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Maine

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I was checking into this.
http://www.modelsoundsinc.com/index.php
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10-07-2017 11:16 PM  33 months ago
Heli143

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Phenix City, Alabama

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+1 on modelsoundsinc...

I recently purchased their Huey sound module after seeing some customer videos and reviews.
Roy Mayoral
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10-07-2017 11:56 PM  33 months ago
heliraptor10

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kokomo, in-US

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Isn't the unique sound of a Huey based on its low headspeed and high weight?Goblin! where have you been all my life?
RC helis, the original fidget spinners
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10-07-2017 11:58 PM  33 months ago
InvertedDude

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heliraptor10
Basically more torque motor and wide cord blades?
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10-08-2017 12:16 AM  33 months ago
heliraptor10

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That's what I was thinking.

Go with a really low kV motor, wide cord blades and load her up with batteries.

I had an old raptor e550 that I taped a camera and stuff to get some aerial video. It was way too heavy, barely got airborne.
But it had that slow choppy sound.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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10-08-2017 02:10 PM  33 months ago
jbewley

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Fairfield, PA

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Having spent many hours in a UH-1, the sound on the Model Sound card did not sound correct to me. I contacted David and sent him a sound clip that was more to my liking and he put it on the card for me at no extra charge. The folks at Model Sound are great to work with. Here is what mine sounds like.

Jim

Watch at YouTube

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10-08-2017 04:59 PM  33 months ago
co_rotorhead

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Having spent many hours in a UH-1, the sound on the Model Sound card did not sound correct to me. I contacted David and sent him a sound clip that was more to my liking and he put it on the card for me at no extra charge.
That sounds great. Model Sound should use that as their default UH-1 sound clip.
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10-08-2017 05:09 PM  33 months ago
870heli

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Monson Ma. USA

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That should do it.
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10-08-2017 07:01 PM  33 months ago
jbewley

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I also had them set up my board, so that the throttle is not involved with the sound at all. A real, turbine helicopter does not increase or decrease the engine speed, as a fixed wing craft does. The Huey is brought up to 6600 rpm, on the N1 turbine, 350 rpm on the rotor and that is where the governor keeps it.

This clip was made for me, so it is not used by Model Sound. If anyone has a Model Sound systerm, I'll be happy to send you the file.
Jim
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10-10-2017 03:18 PM  33 months ago
jgunpilot

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Pollock, LA

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A Huey with throttle at FLY will be at 6600 rpm on the N2 turbine, not N1. N1 will vary but N2 is governed by an analog system in the fuel control, and needs slight adjustments with the increase/decrease switch to compensate for daily changes in temperature and pressure.
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10-10-2017 03:59 PM  33 months ago
RM3

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I was going to suggest lengthening your main blades to 6,705 mm and turn your head speed down to 324 rpm showing a preference will only get you into trouble, 90% of everything is crap...
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10-10-2017 05:26 PM  33 months ago
InvertedDude

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RM3
I was going to suggest lengthening your main blades to 6,705 mm and turn your head speed down to 324 rpm
In that case, I am gonna borrow $1 million and buy a huey myself!
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10-10-2017 07:11 PM  33 months ago
jbewley

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Fairfield, PA

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I stand corrected. The N2 is the power turbine and kept at 6600 rpm. I was relying on memory, from 45 years ago, which was close. :-)

Jim
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10-10-2017 07:54 PM  33 months ago
jgunpilot

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Pollock, LA

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jbewley, did you fly Hueys in the army?
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10-10-2017 09:10 PM  33 months ago
jbewley

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Fairfield, PA

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No, my glasses kept me out of flight school. I was the crewchief / left door gunner, on a "slick" (UH-1D) in Vietnam. I did get some stick time, but completely off the record. :-)

Jim
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10-10-2017 09:24 PM  33 months ago
Santiago P

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Dayton

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The pop-pop-pop sounds on the full scale comes fro the pressure wave interaction between the mains and tails, (both highly loaded).

The only thing I have heard that comes close to was a Yamaha RMAX (150lbs)I flew a while back, main rotor RPM 450ish (~10ft span).

If I stood 50' high and behind it made the distinct loud pop like a Huey. That put the fear of Lord in me very quickly, and stayed there.

In order to duplicate the sound w a model (or come close to it) you need low RPM, and very high blade loading. Wider chord blades will help.

S
Team Minicopter - PeakAircraft.com
FUTABA.USA - Team Kontronik - Scorpion Motors-
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10-10-2017 10:07 PM  33 months ago
BeltFedBrowning

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Kansas City

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I had a piece of tracking tape come loose on one of my low head speed machines and it sounded just like that till it came off completely. I wish I had it on video.
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10-11-2017 01:37 AM  33 months ago
Heli143

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Phenix City, Alabama

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Hi Jim,
I was a crew member with 6th Cav during 1975-76 mostly on 58s and sometimes hueys depending on the mission. I got stick time also and fell in love with helicopters.

I have the modelsounds system and have to agree that the speed of the blades is too fast.

Could you send me a copy of your sound file?

Thanks in advance!!
Roy Mayoral
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10-11-2017 02:12 AM  33 months ago
jbewley

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Fairfield, PA

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Roy, I was there '70 / '71 with the 7/17th Air cav. I'll be glad to send yu the file. I'll PM.

Jim
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