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Grittner · 07-16-2015, 05:01 PM

Hello i have 3 x DS8717 that are able to run at 6V and 1 x DS9800G that is for 4.8V my question is can i run the tail DS9800G at 6V???

im using a CC PRO BEC at 6V is for a spare Goblin 700 12s.

aerocal · 07-16-2015, 06:25 PM

Generally a tail servo that is specified to run at 4.8 volts isnt going to last long at higher voltages and needs to have an additional "tail step down" regulator installed.

Grittner · 07-16-2015, 07:12 PM

Quote:

Originally Posted by aerocal

Generally a tail servo that is specified to run at 4.8 volts isnt going to last long at higher voltages and needs to have an additional "tail step down" regulator installed.

i will be running it at 6V via a BEC will it be to much and when you say won't last long what do you mean by that...

04fxdwgi · 07-17-2015, 01:38 AM

He means that the tail servo is rated at 4.8 volts. The 6 volt input will be 25% higher than rated input voltage for servo.

The tail servo will work, probably run quite hot, and it's life span will probably be reduced by a great margin, if run on 6 volt.

Old rule of thumb: Rated voltage, + or - 10% is what is good to run anything on. The 6 volt is +25%. See where that is going? Running at 5.2 volts will be 8.3% higher than rated voltage, but will be just fine.

May last a month, a week, a day, or even 15 minutes. No telling.

Grittner · 07-17-2015, 09:27 AM

Thank you very much

Quote:

Originally Posted by 04fxdwgi

He means that the tail servo is rated at 4.8 volts. The 6 volt input will be 25% higher than rated input voltage for servo.

The tail servo will work, probably run quite hot, and it's life span will probably be reduced by a great margin, if run on 6 volt.

Old rule of thumb: Rated voltage, + or - 10% is what is good to run anything on. The 6 volt is +25%. See where that is going? Running at 5.2 volts will be 8.3% higher than rated voltage, but will be just fine.

May last a month, a week, a day, or even 15 minutes. No telling.

Ah Clem · 07-24-2015, 10:16 AM

I have quite a few 8900G's in service at the moment.

I use the WR stepdown to drop the voltage from 6 to 5.2, and have not had any issues (over years and hundreds of flights).

Five or six bucks for the stepdown and you will not have to worry about the voltage.

07-16-2015, 05:01 PM	#1 (permalink)
Grittner Registered Users Join Date: Jul 2008	DS8717 & DS9800G can be all at 6V Hello i have 3 x DS8717 that are able to run at 6V and 1 x DS9800G that is for 4.8V my question is can i run the tail DS9800G at 6V??? im using a CC PRO BEC at 6V is for a spare Goblin 700 12s. __________________ Diabolo 550 / Diabolo 700BE /Triabolo 700 / Srimok 90N Goblin-700/700C/KSE/BlackNitro/380/Logo700/Trex600NSP Jeti DS-14 Edition

07-16-2015, 06:25 PM	#2 (permalink)
aerocal Registered Users Join Date: Jun 2008	Generally a tail servo that is specified to run at 4.8 volts isnt going to last long at higher voltages and needs to have an additional "tail step down" regulator installed. __________________ Too many helis & Too many planks Lots of DX radios & A couple Futaba 72mhz radios AMA member & Full scale plank driver HELIFREAK !!!

07-24-2015, 10:16 AM	#6 (permalink)
Ah Clem Registered Users Join Date: Jan 2006	I have quite a few 8900G's in service at the moment. I use the WR stepdown to drop the voltage from 6 to 5.2, and have not had any issues (over years and hundreds of flights). Five or six bucks for the stepdown and you will not have to worry about the voltage. __________________ KBDD-Team Captain, JR DFA Team Pilot. Forza 450, Forza 600N, Forza 700, Compass 6HV-U, Warp, 7HV,Knight Pro,Knight 3D, Atom, Odin II, 6HV, 3D Plus, Knight 50, Chronos, Velos, Steam 550 and 600, OMP M2 (and anything else I can get my hands on...).

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07-17-2015, 01:38 AM	#4 (permalink)
04fxdwgi Registered Users Join Date: Sep 2014 Location: Eastern North Carolina	He means that the tail servo is rated at 4.8 volts. The 6 volt input will be 25% higher than rated input voltage for servo. The tail servo will work, probably run quite hot, and it's life span will probably be reduced by a great margin, if run on 6 volt. Old rule of thumb: Rated voltage, + or - 10% is what is good to run anything on. The 6 volt is +25%. See where that is going? Running at 5.2 volts will be 8.3% higher than rated voltage, but will be just fine. May last a month, a week, a day, or even 15 minutes. No telling.

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