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Which servo to replace JR8411/8511/8711/8911?

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RC Jets Discuss RC jets in this forum plus rc turbines and ducted fan power systems
View Poll Results: Which available servo do you use?
Savox
14
40.00%
MKS
15
42.86%
KST
7
20.00%
Futaba
7
20.00%
Hitech
3
8.57%
JR
3
8.57%
Other
6
17.14%
Multiple Choice Poll. Voters: 35. You may not vote on this poll

Which servo to replace JR8411/8511/8711/8911?

Old 02-11-2024, 09:00 AM
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Propellars
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Default Which servo to replace JR8411/8511/8711/8911?

Since my favorite JR8411, 8511, 8711 and 8911 servos are out of production, I need to find a new future favorite in standard size.

So which servo brands do you use for control surfaces in 15-30 kg/cm (208-416 oz-in)?
Supply is 2 x LiFE unregulated. Or 6V regulated.
No SBUS

Please also write model number in the thread.

Savox - are they really so noisy?
MKS - rc car servo. canít find that many users. Even their Jet-line series seems not to be used much.
KST - canít find many users
Futaba - canít find any suitable below 200 $/Ä
Hitech -
JR -
Other -
Old 02-11-2024, 02:21 PM
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Dave Wilshere
 
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Lars

I was the biggest JR servo fan and seller, we sold thousands of JR 8411/8711-8911.
Since the loss, we changed to the MacGregor servos, I put CARF onto them and they now use and promote the MacGregor premium servos. My biggest sales are the Brushless servos 28kg and 55kg. They will cover all your needs.
Old 02-11-2024, 04:26 PM
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sc0tt
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JR (under new ownership) is still making servos, radios, etc...
https://www.deeforce.net
Old 02-13-2024, 08:19 AM
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Propellars
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Nice to see that Savox and MKS are so widely used in jets, despite they are developed for cars, which on the other hand might be a tough test bench.
I thought Savox were too noisy to like - or isnít it that bad after all?
Which models do you use?

JR-propo and MG seems nice too, thanks.
Old 02-13-2024, 10:32 AM
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jvaliensi
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KST servos are great. I've been using them for over 4-years with good success.
The following 2 users liked this post by jvaliensi:
Agrav8ed (02-14-2024), Skunkwrks (02-16-2024)
Old 02-13-2024, 06:16 PM
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Viper1GJ
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I've used ProModeler servos for lots of projects. I like the high quality mil spec stuff with great prices. Lots of info on their website.
Old 02-14-2024, 07:20 AM
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Hot Rod Todd
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I second the Promodeler servos. Very quiet, good construction. Not expensive for what you get. They use futaba style servo arms.
Old 02-14-2024, 07:37 AM
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jvaliensi
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Originally Posted by Hot Rod Todd
I second the Promodeler servos. Very quiet, good construction. Not expensive for what you get. They use futaba style servo arms.
Promodeler servos are quite possibly the best made servos in the world for the RC industry. They do lack some modern features, such as programmability. And they are not infallible.
I have a set of the mini 355's in my Rebel Hot and they have given me good success over the past 3+ years.

https://www.promodeler.com/DS355CLHV
Old 02-14-2024, 09:42 PM
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camss69
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Switched from JR to Savox servos several years ago. Just ordered all Savox for my next build as well. Iím pretty happy with the performance per dollar with Savox.
Old 02-15-2024, 12:24 PM
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My battle is mostly between Savox 1256TG and MKS DS1220.
I hear that Savox has large current draws, perhaps due to their rapid movement. And I would hate to brownout my RX. Donít you see any potential current issues? I guess the 1256TG has less current issue, as it isnít rapid.

My power system is 2 packs 2xLiFE 1300 mAh in a 1/8 Draken and 2 packs 2x2300 mAh in a CARF Eurosport.
RX is R7014 FASTest
Old 02-15-2024, 05:09 PM
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jvaliensi
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This a great device to test your servos. It will let you know the current draw.
If you move a servo from one extreme to the other very quickly - the current will be very high. This is not typical jet aircraft operation.

https://www.helidirect.com/products/...BoCpikQAvD_BwE

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