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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › Futaba 701 Servo settings.
10-07-2020 07:07 AM  4 months ago
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G Steyn

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Heidelberg, Transvaal, Suid Afrika

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Futaba 701 Servo settings.
Hi all, I've had a BLS 251 fail, and replaced it with a SAVOX SH1290MG.
Inside the Basic settings there are 3 options for rudder servos.
1520, 760, and Analogue.
What does the 1520 mean, is it the neutral position of the servo?
What spec do I look at from the servo side to make the correct adjustment on the gyro?

SAVOX SH1290MG specs....
Operating Travel: 100° (1000 → 2000 µ second)
Neutral Position: 1520 µ second
Pulse Width Range: 800 → 2200 µ second
Maximum Travel: Appx 154° (800 → 2200 µ second)
Refresh Rate: 333 Hz
Motor Type: Coreless
Concentrate on your weaknesses and your strengths will reward you!
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10-07-2020 03:32 PM  4 months ago
dasd

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Bartlett, IL

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Set it to 1520. That is a high speed servo for tail.Formerly SunFunFlyer.
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10-07-2020 04:40 PM  4 months ago
helitom

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Pine Grove, Calif, USA

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If you were running the BLS251 that means the 701 was set to 760. As noted above, you need to reset the 701 to 1520.The older I get, the fewer things seem worth waiting in line for.
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10-07-2020 08:54 PM  4 months ago
Girard Ibanez

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Tucson, Arizona (formally from Guam)

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Futaba BLS 251 = 760us = Center Pulse / 560Hz refresh frequency.

SAVOX SH1290MG = 1520us = Center Pulse / 333Hz refresh frequency.

Team Thunder Tiger
since 6/2005 to 12/2014
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10-08-2020 02:55 PM  4 months ago
G Steyn

rrApprentice

Heidelberg, Transvaal, Suid Afrika

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Thanks for the replies. You guys are GREAT!Concentrate on your weaknesses and your strengths will reward you!
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10-08-2020 03:43 PM  4 months ago
Girard Ibanez

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Tucson, Arizona (formally from Guam)

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Set it to 1520. That is a high speed servo for tail.
1520us is the center pulse.

The BLS 251 has a refresh frequency 560Hz vs 333 Hz.

Team Thunder Tiger
since 6/2005 to 12/2014
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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › Futaba 701 Servo settings.
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