Go Back  R/C Tech Forums > General Forums > Nitro Off-Road
Torque and Speed for 1/8 Buggy Servo >

Torque and Speed for 1/8 Buggy Servo

Torque and Speed for 1/8 Buggy Servo

Old 01-13-2012, 09:53 AM
  #1  
Tech Adept
Thread Starter
iTrader: (2)
 
Join Date: Sep 2010
Posts: 190
Trader Rating: 2 (100%+)
Default Torque and Speed for 1/8 Buggy Servo

Most of these threads end up talking about everybody's favorite brand of servo. I am just trying to figure out the minimum torque and speed needed to be competitive in 1/8 buggy racing. I'm mostly interested in steering.

Thanks
K. Wood is offline  
Old 01-13-2012, 10:29 AM
  #2  
Tech Elite
 
Join Date: Mar 2009
Location: Aurora, Colorado
Posts: 4,026
Default

Speed is up to you, but I will not go under 200 torque. I like my 347oz servos. More is better IMO. I would stay away from SPEED servos for steering. Look for High Torque servos...

See I didnt mention a brand.
token is offline  
Old 01-13-2012, 10:30 AM
  #3  
Tech Addict
iTrader: (40)
 
Precision1's Avatar
 
Join Date: Jan 2012
Location: NorCal
Posts: 662
Trader Rating: 40 (100%+)
Default

I use 277oz and 0.15 sec @ 6v for truggy steering.

Some folks get obsessed w/ ultra fast, but this seems like plenty quick to me.
Precision1 is offline  
Old 01-13-2012, 10:51 AM
  #4  
Tech Adept
 
Tarimon's Avatar
 
Join Date: Jan 2011
Location: Germany
Posts: 116
Smile

Originally Posted by token View Post
I would stay away from SPEED servos for steering. Look for High Torque servos...

See I didnt mention a brand.

I like a very speedy servo on steering, it matches my driving style and works much better for me than a slower one. Maybe I have very nervous fingers...
Nevertheless enough torque is important, too! I agree with token, donīt use servos below 200 oz/in on steering!

Mine is 0.06 on 60° at 222 oz/in (16kg/cm) on 2S Lipo.

Brand?

Last edited by Tarimon; 01-13-2012 at 11:59 AM.
Tarimon is offline  
Old 01-13-2012, 12:01 PM
  #5  
Tech Elite
 
MrUnlimited's Avatar
 
Join Date: Oct 2005
Location: Netherlands
Posts: 2,491
Default

I have a 197oz torque at 0.17seconds servo for my buggy. It is more than enough. I use the same servo in my 26cc hydroplane (weight around 8kg) for the rudder (steering in boating ) without problem!
MrUnlimited is offline  
Old 01-13-2012, 12:27 PM
  #6  
Tech Elite
iTrader: (14)
 
t8rtot's Avatar
 
Join Date: Nov 2008
Posts: 2,011
Trader Rating: 14 (94%+)
Default

any servo w/ 180/oz or more really, just in the last few yrs these crazy strong servos have been available at a decent rate of speed.

buggies are getting lighter and ppl are still going over-kill w/servos, its their money, but thats money better spent in tires imo.

brand really doesn't matter, if its sold at a few different places online and in a local shop, chances are its a decent brand.
t8rtot is offline  
Old 01-13-2012, 03:05 PM
  #7  
Tech Lord
iTrader: (148)
 
Frank L's Avatar
 
Join Date: Dec 2008
Location: NorCal
Posts: 12,522
Trader Rating: 148 (100%+)
Default

Originally Posted by token View Post
Speed is up to you, but I will not go under 200 torque. I like my 347oz servos. More is better IMO. I would stay away from SPEED servos for steering. Look for High Torque servos...

See I didnt mention a brand.

I agree about the speed servos. They never seem to hold up to the abuse of 1/8 scale. With the hv options these days usually getting the speed on the high torque servos down to .10 or .11, it really makes sense to just stay with a high torque 300oz+ servo. Before the days of hv the rule was 200oz or higher for steering and 150 for throttle brake. I run servos that are in the 400oz+ range. Just what I like to run.
Frank L is offline  
Old 01-13-2012, 03:33 PM
  #8  
Tech Elite
 
Join Date: Mar 2009
Location: Aurora, Colorado
Posts: 4,026
Default

Originally Posted by Tarimon View Post
I like a very speedy servo on steering, it matches my driving style and works much better for me than a slower one. Maybe I have very nervous fingers...
Nevertheless enough torque is important, too! I agree with token, donīt use servos below 200 oz/in on steering!

Mine is 0.06 on 60° at 222 oz/in (16kg/cm) on 2S Lipo.

Brand?
Im glad they hold up for ya.
token is offline  
Old 01-13-2012, 08:34 PM
  #9  
Tech Elite
iTrader: (7)
 
Brandon Melton's Avatar
 
Join Date: Nov 2003
Location: NC
Posts: 2,506
Trader Rating: 7 (100%+)
Default

speed-.12 or better
torque-200 oz. or better

mine are .10 speed and 200 oz @ 6v, I love them. I use a Life battery, so they are pushing a little more than the rated numbers.
Brandon Melton is offline  
Old 01-13-2012, 08:40 PM
  #10  
Tech Fanatic
iTrader: (7)
 
JamminSP's Avatar
 
Join Date: Dec 2009
Location: Shreveport, La.
Posts: 830
Trader Rating: 7 (100%+)
Default

the ones I am switching to are 305oz at .07.... should be plenty for both duties.....
JamminSP is offline  
Old 01-13-2012, 09:36 PM
  #11  
Tech Elite
iTrader: (3)
 
merdith6's Avatar
 
Join Date: Oct 2009
Location: Brazoria, TX
Posts: 2,350
Trader Rating: 3 (100%+)
Default Yep

Originally Posted by Precision1 View Post
I use 277oz and 0.15 sec @ 6v for truggy steering.

Some folks get obsessed w/ ultra fast, but this seems like plenty quick to me.
I agree even for a buggy. The torque monsters last longer in steering.

For throttle 150 plus torque and fast at .08-.12 transit time...
merdith6 is offline  
Old 01-13-2012, 10:50 PM
  #12  
Tech Elite
iTrader: (27)
 
ScottyM's Avatar
 
Join Date: May 2009
Location: Miami OK
Posts: 3,149
Trader Rating: 27 (100%+)
Default

One a buggy I think 200 min for torque, but Like 250 or more for truggy.

Speed isn't as big a thing to me as power and reliability.

That Said I run 333oz @ 6v with .16 response times on both buggy and truggy. but I run them at 7.4volts and get over 400oz of torque and around .13sec response times. More then adequate..
ScottyM is offline  
Old 01-14-2012, 01:52 AM
  #13  
Tech Adept
 
Join Date: Mar 2010
Location: Bridgeport, CT
Posts: 126
Default

I run a Hitec 7980TH it's 611 oz./.17 on 2s lipo for steering. Overkill but I will never have to worry about it..
bpd964 is offline  
Old 01-14-2012, 03:10 AM
  #14  
Tech Elite
 
MrUnlimited's Avatar
 
Join Date: Oct 2005
Location: Netherlands
Posts: 2,491
Default

I see very expensive servo's. In the early days of rc racing we brought into a shop for repair when they broke. Todays servo's are SMD technic just like USB-sticks and other electronics. It is very difficult to repair this so when we a broken servo we replace them with a new but replacing a 200usd servo each time it breaks......I like to see the face of my wife
MrUnlimited is offline  
Old 01-14-2012, 04:37 AM
  #15  
Tech Adept
iTrader: (1)
 
FUSIONX AUS/NZ's Avatar
 
Join Date: Nov 2011
Location: Australia
Posts: 241
Trader Rating: 1 (100%+)
Default

In 1/8 Buggy i run a steering servo with the following specs

6.0V:217.0 oz-in (15.63 kg-cm)

6.0V:0.13 sec/60°

I like a fast twitchy feel and that seems to be fine for me.

In Truggy i run

6.0V 431 oz-in (31.0 kg/cm) 0.14 sec/60°

Which seems to be well and truly fast enough.. I have had many really good drivers say its too twitchy feeling for them

Like the other guys i really beleive in getting a steering servo with plenty of tourqe and beleive that they last allot longer'

Dave
FUSIONX AUS/NZ is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright Đ 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.