R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Rookie Zone

Reply
 
Thread Tools Search this Thread
Old 01-24-2013, 10:56 AM   #1
Tech Elite
 
Join Date: Oct 2012
Location: Naperville, IL
Posts: 3,651
Trader Rating: 57 (100%+)
Default What do you look for in a servo?

I currently have a 2WD SC using a spektrum s6040. I found another on the forums for my ST. I have a 2WD buggy on the way.

What specs do you look for in a servo for the various classes?
shagino is offline   Reply With Quote
Old 01-24-2013, 11:18 AM   #2
Tech Master
 
kaiser's Avatar
 
Join Date: Sep 2010
Location: new milford ct
Posts: 1,688
Trader Rating: 2 (100%+)
Default

the 6040 is a good servo, i use one in my 1/10 4wd buggy, 1/10 2wd buggy and in my 1/10 stadium truck.

you can look at the specs of a particular servo to see torque and speed.
look at the specs for the 6040 and compare to others. since you know how the 6040 works you'll have a good idea weather or not you want more speed or power. but that 6040 will be good in just about anything 1/10 scale.
__________________
vintage for life! Jrx2/JrxPro/RC10/RC10ce/RC10 graphite/RC10 oin/RC10T/RC10T2/RCPS sprinter/Optima x2/Scorpion/too many old tamiya's to list
RCHR.biz
kaiser is offline   Reply With Quote
Old 01-24-2013, 11:34 AM   #3
Suspended
 
Join Date: Jan 2013
Location: In the Mitten. 17 miles south of the D
Posts: 211
Trader Rating: 1 (100%+)
Default

i look 4 servos like these..they make 3 differnt ones I own all 3.. but the green is my fav.. all my vehicles run thes.. I drive a Losi SCTE..


Radiopost servos are the only servos in the market using robot actuator technology and 32-bit resolution allowing ultra quick response and precise movement. They have an aluminum heat sink to dissipate heat. Ultra efficient coreless motor with a titanium-hybrid gear system powers any application. RP2307M Multi-Type servo is ideal for any application.

Model: RPS2207M (Multi Servo)
Voltage: 4.8V ~ 8.4V
Operating: PWM
Torque:
@ 6.0V: 249 oz in
@ 7.4V: 305 oz in
Speed:
@ 6.0V: 0.08sec/60
@ 7.4V: 0.07sec/60
Dimensions: 41.4x20.7x37.8mm (Without wing bracket)
Weight: 65g
Replaceable mounting tabs
Excess wire can hide inside servo case (no more cutting wires apart to shorten)
hpikillr is offline   Reply With Quote
Old 01-24-2013, 02:44 PM   #4
Tech Elite
 
justpoet's Avatar
 
Join Date: Jan 2012
Location: NH, USA
Posts: 2,049
Trader Rating: 16 (100%+)
Default

I run the 6040 in my 4wd SC (Tekno now, was the Losi) and have no complaints. Some buggies though, will be much easier to work with when using a low profile servo.

Servo speed is a preference to a degree. I like a fast servo, but unless you're good with that instant response, having too fast a servo can make you twitchy and overcorrect really easily (though this is also generally correctable with expo).

That being said, I generally aim for a .08 or .09 for speed on everything so my cars have consistent response time across them (same feel for steering response), and then just pick a servo with enough torque for my application.

My general recommendations for torque:
10th scale buggy: 90+
10th scale 2wd truck: 120+
10th scale 4wd SC: 150+
8th scale buggy: 250+
__________________
"We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit." -Aristotle
My wallet supports: TeknoRC.com, NorCalHobbies.com, SMC, Sanwa, and several tire/servo companies.
justpoet is offline   Reply With Quote
Old 01-25-2013, 06:19 AM   #5
Tech Elite
 
Join Date: Oct 2012
Location: Naperville, IL
Posts: 3,651
Trader Rating: 57 (100%+)
Default

Quote:
Originally Posted by justpoet View Post
I run the 6040 in my 4wd SC (Tekno now, was the Losi) and have no complaints. Some buggies though, will be much easier to work with when using a low profile servo.

Servo speed is a preference to a degree. I like a fast servo, but unless you're good with that instant response, having too fast a servo can make you twitchy and overcorrect really easily (though this is also generally correctable with expo).

That being said, I generally aim for a .08 or .09 for speed on everything so my cars have consistent response time across them (same feel for steering response), and then just pick a servo with enough torque for my application.

My general recommendations for torque:
10th scale buggy: 90+
10th scale 2wd truck: 120+
10th scale 4wd SC: 150+
8th scale buggy: 250+
Thanks! Exactly what is was looking for. I really like the 6040 but I figured torque was overkill for a buggy. I was more after guidelines as I prefer not to have to try out a bunch of servos to get a feel for it.
shagino is offline   Reply With Quote
Old 01-25-2013, 11:21 AM   #6
Tech Elite
 
justpoet's Avatar
 
Join Date: Jan 2012
Location: NH, USA
Posts: 2,049
Trader Rating: 16 (100%+)
Default

Having extra torque is never a bad thing (and won't be noticed), so if you want to stick with the same servo for several vehicles, making it easier to grab a spare of fix a more favored vehicle for a series, etc...go for it.
__________________
"We do not act rightly because we have virtue or excellence, but we rather have those because we have acted rightly. We are what we repeatedly do. Excellence, then, is not an act but a habit." -Aristotle
My wallet supports: TeknoRC.com, NorCalHobbies.com, SMC, Sanwa, and several tire/servo companies.
justpoet is offline   Reply With Quote
Old 01-26-2013, 09:40 AM   #7
Tech Apprentice
 
Join Date: Jul 2012
Posts: 88
Default

A slower servo might actually be more of your driving style as well. One of my racing buddies actually dropped a few tenths of a second just by installing a slower servo. A lot of the new radios actually have a setting where you can slow the servo down from the radio. I had to slow down the steering response on my XB4 down by 30% from a speed servo.
__________________
Santiam Hobbies Tech
TLR 22, Orion R10 Pro Fantom 17.5 * TLR 22SCT, Orion R10 Pro Fantom 17.5
B4.1, SP Reventon Pro, Orion 17.5 * RC8.2e, Tekin RX8, Tekin 1900kv
HB TC-FD, SP Reventon Pro, Tekin 8.5 * Xray XB4 Orion R10 Pro, Fantom 6.5
adamym is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
What do you look for when buying a radio? EatYoLegs Radio and Electronics 28 01-01-2012 06:48 AM
What do you Look For/What Would you Like to see in a 2wd Short Course Truck? AMP-RC Electric Off-Road 10 03-20-2011 08:49 PM
What Feataures to Look for in a Radio? SlamMan Electric On-Road 22 02-14-2007 11:06 AM
what to look for in a servo???? djrfan Australian Racing 15 03-20-2005 09:08 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 02:39 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net