RCCrawler Forums

brokendiff · 01-01-2009, 12:51 PM

i was just wondering what i'm really getting out of this sevro. it's a hitec hsr 5995 tg. this is on my axial scrpion with novak 55t and speed control. the manufacturer states-stall torque @ 6v 333oz/ @ 7.4v 416oz/standing torque-@ 6v 433/ @ 7.4v 541oz. i'm using a standard 3300mih stick pack for the time being. so what am i really getting here?

Narly1 · 01-01-2009, 08:50 PM

What is the actual voltage you are applying to the servo?

Playing around with the spec'd figures indicates that the output torque is fairly linear wrt to the applied voltage (based on the 2 defined points).

Or, expressed as a mathematical equation:

Torque = K (constant) x voltage

If that is not close enough for you, you could set-up the servo with a moment arm, with the free end pressing down on a weigh scale to read the force. Take the force value and divide it by the arm length to get a torque figure.

Narly1

brokendiff · 01-02-2009, 12:31 PM

7.2volts

Timmahh · 01-02-2009, 12:34 PM

actually, MOST RX units only pass 6v thru them. so even on a 7.2 or 8.4v 8cell, the rx will only allow 6v to pass thru (most of them, not all).

also most servos wont handle over 6vs. unless otherwise stated as the 5955s are. so unless your running a power splitter for the steering servo power, your servo is seeing 6v and getting 333 in/oz of torque.

brokendiff · 01-02-2009, 07:14 PM

alright,thanks. i was hoping for a bigger number but its still pushing rocks.

minor_threat · 02-12-2009, 09:15 AM

Good to know. what speed controls allow more? my trxxass vl5 allow more...why wouldn't they all? jumping in midstream, sorry.

Badd · 02-12-2009, 09:23 AM

get yourself a Castel BEC that away you can adjust the Voltage .

D-ran83 · 02-12-2009, 09:24 AM

What esc are you using? most esc bec's only push 5v. I know fxr's are 6v. If you got a bec you can set it to w/e you want, you would even notice a big difference with a bec set at 5v b/c it handles a much higher load, I think it's 10a.

Edit: Badd beat me to the post.

01-01-2009, 12:51 PM	#1
brokendiff Pebble Pounder Join Date: Dec 2006 Location: ephrata Posts: 162	hitec servo specs i was just wondering what i'm really getting out of this sevro. it's a hitec hsr 5995 tg. this is on my axial scrpion with novak 55t and speed control. the manufacturer states-stall torque @ 6v 333oz/ @ 7.4v 416oz/standing torque-@ 6v 433/ @ 7.4v 541oz. i'm using a standard 3300mih stick pack for the time being. so what am i really getting here?

01-01-2009, 08:50 PM	#2
Narly1 Quarry Creeper Join Date: Jul 2008 Location: Erin, Ontario, CANADA Posts: 471	What is the actual voltage you are applying to the servo? Playing around with the spec'd figures indicates that the output torque is fairly linear wrt to the applied voltage (based on the 2 defined points). Or, expressed as a mathematical equation: Torque = K (constant) x voltage If that is not close enough for you, you could set-up the servo with a moment arm, with the free end pressing down on a weigh scale to read the force. Take the force value and divide it by the arm length to get a torque figure. Narly1

01-02-2009, 12:31 PM	#3
brokendiff Pebble Pounder Join Date: Dec 2006 Location: ephrata Posts: 162	7.2volts

01-02-2009, 12:34 PM	#4
Timmahh RCC Addict Join Date: Jun 2008 Location: Mudville Posts: 1,592	actually, MOST RX units only pass 6v thru them. so even on a 7.2 or 8.4v 8cell, the rx will only allow 6v to pass thru (most of them, not all). also most servos wont handle over 6vs. unless otherwise stated as the 5955s are. so unless your running a power splitter for the steering servo power, your servo is seeing 6v and getting 333 in/oz of torque.

01-02-2009, 07:14 PM	#5
brokendiff Pebble Pounder Join Date: Dec 2006 Location: ephrata Posts: 162	alright,thanks. i was hoping for a bigger number but its still pushing rocks.

02-12-2009, 09:15 AM	#6
minor_threat Rock Crawler Join Date: Jan 2009 Location: east bay Posts: 544	Good to know. what speed controls allow more? my trxxass vl5 allow more...why wouldn't they all? jumping in midstream, sorry.

02-12-2009, 09:23 AM	#7
Badd I wanna be Dave Join Date: Sep 2005 Location: Dirty South Posts: 4,064	get yourself a Castel BEC that away you can adjust the Voltage .

02-12-2009, 09:24 AM	#8
D-ran83 Quarry Creeper Join Date: Nov 2006 Location: Rockaway Posts: 285	What esc are you using? most esc bec's only push 5v. I know fxr's are 6v. If you got a bec you can set it to w/e you want, you would even notice a big difference with a bec set at 5v b/c it handles a much higher load, I think it's 10a. Edit: Badd beat me to the post.

Sponsored Links

RCCrawler Forums

Thread: hitec servo specs