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S3001 vs S3004 servos?

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Old 12-08-2004, 06:19 AM
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Test005
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Default S3001 vs S3004 servos?

I don't get the diffrence between the Futaba S3001 & S3004 servos?
They have pretty much same specs, but the 3001 being quite more expencive (both are ball bearing servos)

Why should you pay more for the S3001?
Any performance or reliability diffrence between these two servos in a normal 40 size sport plane?
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Old 12-08-2004, 09:45 AM
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Default RE: S3001 vs S3004 servos?

What are you using them in?
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Old 12-08-2004, 11:44 AM
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Default RE: S3001 vs S3004 servos?

Well I'd like to know the diffrence.
I use 3001's in a WM skyraider2, and in a Modelfly Beaver.
Now I'm building a Durastik and wonder why I really are paying more money for the S3001 when they appear to have the same specs as the S3004.

So... Are there any diffrence between S3001 & S3004 in a general 40 size sportplane application?
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Old 12-08-2004, 11:50 AM
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Default RE: S3001 vs S3004 servos?

The only difference that I see in the specs is that the 3001 weighs .3 ounces more and for the 3004 under gear type it says single ball bearing, for the 3001 it says ball bearing.
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Old 12-08-2004, 12:11 PM
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Default RE: S3001 vs S3004 servos?

ORIGINAL: Test005

I don't get the diffrence between the Futaba S3001 & S3004 servos?
They have pretty much same specs, but the 3001 being quite more expencive (both are ball bearing servos)

Why should you pay more for the S3001?
Any performance or reliability diffrence between these two servos in a normal 40 size sport plane?

The 3001 is the bearing version of the 148 Precision servo and the 3004 is the bearing version of the standard 3003 servo.

Pete
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Old 12-08-2004, 12:12 PM
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Default RE: S3001 vs S3004 servos?

Hi,

The S3001 is listed as a precision servo (Futaba Website) and it has a 3-pole motor which also makes it a bit heavier - perhaps our EE friends here can explain why the 3-pole motor translates to higher precision. I believe that you are probably not going to notice any real advantage over the S3004 in an average sport plane. I would go with the S3004.

Steve
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Old 12-08-2004, 06:45 PM
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Default RE: S3001 vs S3004 servos?

I believe the 3001 is designed to tolerate more vibration. The Futaba Heli flight packs include 3001 servos. For .40 - .60 size planes the 3004's are fine.
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Old 12-08-2004, 07:21 PM
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Default RE: S3001 vs S3004 servos?

For sport flying with a 40-size machine, the S3004 is entirely adequate -- save your money.
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Old 12-08-2004, 10:58 PM
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Default RE: S3001 vs S3004 servos?

3001s are indirect drive, 3004s are direct drive. The feedback pot on a 3003/3004 is driven directly off the output gear, making it more prone to vibration damage.
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Old 12-09-2004, 10:48 AM
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Default RE: S3001 vs S3004 servos?

Hi Test005,

You may want to check our website also as it does have quite a bit of helpful information on these servos and many other items:

http://www.futaba-rc.com/faq/product-faq.html#q634

http://www.futaba-rc.com/faq/product-faq.html#q607

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
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