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JR8900G frame rate

rudyy

Elite Veteran

E. Amherst, NY

Does anyone know the framerate of JR8900G? Is it 15.2ms/270Hz or 15.2ms/333Hz?

06-10-2011 Over year old.
Dr.Ben

rrMaster

Richmond, VA, USA

Edited. I screwed up. See the info below.

Sorry Rudy.

Ben Minor

Team Thunder Tiger Team Futaba Team Kontronik USA
Esprit Models Progressive RC

06-10-2011 Over year old.
GMPheli

Elite Veteran

W. Bridgewater, MA USA

According to this, which I found somewhere on the web, the 8900G is 333hz, and the BLS251 is 560

Technology | Frame Rates - List of typical and tested frame rates for Transmitter/Receivers and Servos! - Helix RC, Powering the hottest setups! Your source for RC Helicopter electronics .
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Some tested frame rates for various combinations of Transmitters and
Receivers.

TransmitterReceiverFrame WidthUpdate Rate
X9303 2.4GHzR921 2.422ms45.5Hz
X9303 2.4GHzAR7000 DSM222ms45.5Hz
X9303 2.4GHz6100E22ms45.5Hz


Typical frame rates for servos.
Typical specs for digital servos allow frame rates as fast as 3ms,
thats a 333Hz update rate!


ServoPulse WidthSpeed Sec/60degTorque (Kg.cm)Max. Update
4.8v6.0v4.8v6.0vHzms
Airtronics 94758 Standard 0.07 0.06 6.63 8.29 333Hz3ms
Airtronics 94761 Standard 0.15 0.12 3.96 4.76 333Hz3ms
Align DS410 Standard 0.13 0.09 1.80 2.20 333Hz3ms
Align DS420 Standard 0.08 0.06 0.75 1.00 333Hz3ms
Align DS510 Standard 0.13 0.10 3.70 4.60 333Hz3ms
Align DS520 Standard 0.09 0.07 1.90 2.50 333Hz3ms
Align DS610 Standard 0.10 0.08 9.60 12.00 333Hz3ms
Align DS620 Standard 0.09 0.07 8.00 10.00 333Hz3ms
Futaba BLS251 Narrow 0.06 NA 3.80 NA 560Hz1.7ms
Futaba S3151 Standard 0.21 0.17 1.21 1.53 333Hz3ms
Futaba S3153 Standard 0.11 0.09 1.51 1.70 333Hz3ms
Futaba S3154 Standard 0.10 NA 1.50 NA 333Hz3ms
Futaba S9251 Narrow 0.07 NA 3.70 NA 560Hz1.7ms
Futaba S9252 Standard 0.14 NA 6.60 NA 333Hz3ms
Futaba S9253 Standard 0.08 NA 2.00 NA 333Hz3ms
Futaba S9254 Standard 0.06 NA 3.40 NA 333Hz3ms
Futaba S9256 Narrow 0.06 NA 3.40 NA 560Hz1.7ms
Futaba S9257 Standard 0.08 NA 2.00 NA 333Hz3ms
Futaba S9650 Standard 0.14 0.11 3.60 4.50 333Hz3ms
Hitec HS-5925MG Standard 0.10 0.08 7.40 9.20 333Hz3ms
Hitec HS-6965HB Standard 0.10 0.08 6.63 8.00 333Hz3ms
Hitec HSG-5084MG Standard 0.07 0.05 1.51 1.87 333Hz3ms
Ino-Lab HG-D201HB Standard 0.07 NA 1.00 NA 333Hz3ms
Ino-Lab HG-D261HB Standard 0.07 0.06 2.40 3.00 333Hz3ms
JR DS290G Standard 0.08 0.07 0.94 1.15 333Hz3ms
JR DS3400G Standard 0.11 NA 3.67 NA 333Hz3ms
JR DS3500G Standard 0.07 NA 1.95 NA 333Hz3ms
JR DS820G Standard 0.07 NA 2.40 NA 333Hz3ms
JR DS8900G Standard 0.05 NA 3.50 NA 333Hz3ms
JR NES-2700G Standard 0.11 NA 4.32 NA 250Hz4ms
JR NES-810G Standard 0.10 NA 2.40 NA 250Hz4ms
JR NES-8700G Standard 0.09 NA 3.50 NA 250Hz4ms
MKS DS8910 Narrow 0.05 NA 2.01 NA 560Hz1.7ms
MKS DS9670 Standard 0.09 0.07 2.22 2.80 333Hz3ms
Robbe FS61BB Standard 0.07 NA 0.92 NA 333Hz3ms
Sanwa ERG-WRX Standard 0.06 NA 8.10 NA 333Hz3ms
Sky HDS-577 Standard 0.12 0.10 4.00 4.50 250Hz4ms
Sky HDS-877 Standard 0.11 NA 1.20 NA 250Hz4ms

Home FAQ's Team Pilots Support Contact Us
OEM Integration Overdrive TrueSync SinBoost Frame
Rates

06-10-2011 Over year old.
Dr.Ben

rrMaster

Richmond, VA, USA

Thanks for the correction. I edited my earlier post. I had gyro frame rate on my mind.

Ben

Team Thunder Tiger Team Futaba Team Kontronik USA
Esprit Models Progressive RC

06-10-2011 Over year old.
rudyy

Elite Veteran

E. Amherst, NY

Dr.Ben/GMPHeli,

Actually, I find the frequency is 270Hz in the BeastX website , but somewhere in the google search mentions that it is 333Hz. So, I am confused which one is the correct one.

06-10-2011 Over year old.
Brokenlink

Elite Veteran

Oakdale,Ca.

You can also check here Rudy,
http://www.spartan-rc.com/resources/servodb/servo.php

Anyone can land, then stop. It takes someone special to stop, then land

06-10-2011 Over year old.
jstarks

Heliman

Louisiana US

Actually, I find the frequency is 270Hz in the BeastX website , but somewhere in the google search mentions that it is 333Hz. So, I am confused which one is the correct one.
Personally, I would go with the servo mfg specs.

I also found different specs on the Beastx site , related to cyclic servos. When I contacted Beastx to ask about the discrepencies, I was told that they were being conservative with the mfg specs to be on the safe side.
Their reasoning was that if a servo on an fbl system is run at the mfg peak specs (including the mfg voltage spec) then everything is fine. If it is run at peak hz and above mfg spec voltage, then the servo could fail prematurely and (as is the nature in our hobby) pilots would say "Beastx fried my servo!", so they (beastx) give conservative info.

J.

My 3D = Devistation...Destruction....Discover Card!!!

06-10-2011 Over year old.
BarracudaHockey

rrMaster

Jacksonville FL

You're not going to hurt it by running it at a slower rate, but if you try to run a higher frame rate than it can handle you can over heat it.

You're not going to tell any difference in flight between 270 and 333

Andy
AMA 77227
http://www.jaxrc.com

06-10-2011 Over year old.
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JR8900G frame rate

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