JR DS811 Servos - Pulse width & Frequency?

[Pabs]

Hey folks,

Does anyone know the pulse rate and frequency to use for the jr ds811 servo?
Will be using these on a 7200bx on the cyclics of a 3G head on a 600N. Very mild sport flying only, never 3D.

Can't seem to find the answers online anywhere?
Thanks in advance

[Red3]

try here JR Servos - Page 3

[Pabs]

Thanks - already been there and it doesn't state either the pulse width or frequency.

[Red3]

hi I think the problem is the ds811 isn't a tail servo ? JR don't recommend its use on the tail.

[Pabs]

JR DS811 Servos - Pulse width & Frequency?

I am not using it on the tail - I am using them on cyclics. Been fine on the heli until a swap to fbl controller, and this now requires setting up the pulse and frequency.

[Red3]

sorry my bad didn't read your 1st post

[trillian]

Two things; 1. I wouldn't use DS811s on a flybarless 600. The reason being that they just don't have quite the torque and speed IMHO. On a flybarred heli the flybar is making all the little corrective movements so the servos only move with the TX sticks but on a FBL setup the servos have to work much harder and hold their position more solidly. Something like Align DS610s are a proven choice.

2. I'm sure you could get the drive frequency info from JR/MacGregor. The pulse width will be 1520.

[Pabs]

Thanks Sheryl. Had already discussed the use of these servos on FBL with some other folks and they said they'd be O.K at 6v as it's around 5kg torque..?

[trillian]

Thanks Sheryl. Had already discussed the use of these servos on FBL with some other folks and they said they'd be O.K at 6v as it's around 5kg torque..?

Well I suppose the flying style involved is a big factor as well. I just like everything to be what I consider 'bullet-proof'

The DS811s are roughly equivalent in torque / speed to Futaba 3152s and those are listed on the BeastX servo list and the drive frequency is 200hz. I would suggest confirming with someone at JR what frequency would be safe to run them at as you wouldn't want to burn them out.

[Pabs]

Ah ha thanks! Will take a look at the beastx servo list - must admit I've been using the spektrum ar7200bx manual and this only lists spektrum servos

I'll see if I can budget for better servos but hadn't factored this into my plans.