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minimum output power of a throttle servo for 1/8

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minimum output power of a throttle servo for 1/8

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Old 07-21-2019, 11:38 AM
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Default minimum output power of a throttle servo for 1/8

As I am assembling the throttle servo of a 1/8 onroad chassis, I found that with a regular size servo the lower part of the servo is in the way and rubbing the underside of fuel tank. I was wondering if those low profile servos for 1/10 ep touring with torque of around 10-12 kg would do the job?
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Old 07-21-2019, 12:14 PM
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Throttle servo doesn't have to be very strong. If you're not running heavy return springs, and have ideal geometry, I'd say anything over 100oz/in would be good. I'd get something 150 and above of it was my car. Mks has very low profile servos and they list 3 iirc. The lowest spec one would work, but I'd consider the middle of the road 575 if it was me. Protek has some really good low pro servos. Any of them would work for your need.
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Old 07-21-2019, 11:00 PM
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Originally Posted by blackshark3 View Post
As I am assembling the throttle servo of a 1/8 onroad chassis, I found that with a regular size servo the lower part of the servo is in the way and rubbing the underside of fuel tank. I was wondering if those low profile servos for 1/10 ep touring with torque of around 10-12 kg would do the job?
10 kg will be fine. Just make sure your endpoints are good, and it will serve you a long time
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Old 07-23-2019, 12:27 PM
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I run Exotek 160T's as a throttleservo in some of my 1/8 cars as also LP Futabas.
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Old 07-23-2019, 01:07 PM
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20 years ago we runned 4kg servo's.... One of the most populair servo's used is the Savox 1257TG, is has 10kg power and with 0.07sec over 60 degrees enough speed.

So yes, any servo of 10kg or more will sure do.
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Old 07-25-2019, 08:33 PM
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Default Minimum power needed for a 1/8 onroad car.

What is the minimum power needed for a 1/8 onroad car.
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Old 07-25-2019, 09:08 PM
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Originally Posted by aft53 View Post
What is the minimum power needed for a 1/8 onroad car.
if it's a dedicated race car I'd want no less than a 225oz deal. 250-300 would be ideal imo. That's for steering.
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Old 07-25-2019, 10:54 PM
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For throttle there is not much needed, at least 5kg will do, for steer I would go for at least 8kg and with both the speed 0.1sec over 60 degrees or faster. A wise decission is to use the same servo's for both positions so you can get a 3rd as spare for both.
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Old 07-26-2019, 06:52 AM
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I usually like to run a good strong servo in 1/8 class due to the braking power required. I would say minimum of 250oz of torque but that's my opinion. While high torque isn't really required for throttle, it's the braking aspect that I would be concerned about.
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Old 07-30-2019, 11:51 AM
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Originally Posted by eevul View Post
I usually like to run a good strong servo in 1/8 class due to the braking power required. I would say minimum of 250oz of torque but that's my opinion. While high torque isn't really required for throttle, it's the braking aspect that I would be concerned about.
Exactly. I would say 125oz is an absolute minimum. I've used lower than that before but they tend to burn up from the braking strain. 250 is definitely better.
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Old 07-31-2019, 11:19 AM
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Just installed this one on throttle. It's on the weaker side, but should do well.
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