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Old 01-13-2012, 08:53 AM   #1
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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.

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Old 01-13-2012, 09:29 AM   #2
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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.
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Old 01-13-2012, 09:30 AM   #3
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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.
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Old 01-13-2012, 09:51 AM   #4
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Quote:
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?
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Last edited by Tarimon; 01-13-2012 at 10:59 AM.
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Old 01-13-2012, 11:01 AM   #5
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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!
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Old 01-13-2012, 11:27 AM   #6
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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.
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Old 01-13-2012, 02:05 PM   #7
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Quote:
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.
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Old 01-13-2012, 02:33 PM   #8
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Quote:
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.
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Old 01-13-2012, 07:34 PM   #9
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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.
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Old 01-13-2012, 07:40 PM   #10
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the ones I am switching to are 305oz at .07.... should be plenty for both duties.....
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Old 01-13-2012, 08:36 PM   #11
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Quote:
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...
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Old 01-13-2012, 09:50 PM   #12
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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..
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Old 01-14-2012, 12:52 AM   #13
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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..
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Old 01-14-2012, 02:10 AM   #14
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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
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Old 01-14-2012, 03:37 AM   #15
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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'

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