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Old 07-05-2004, 05:46 AM   #1
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Default Servo's ?

I've just purchased a second car (Mi2) and I want to set it up as light as possible.

I'm going to buy a new servo, I want digital, but I was thinking about getting a mico servo, But not saying that is the way I will go. I twill be used for touring car racing on asphalt.
I don't care if it will make my car under weight as I can add ballast if needed.

I'm still learning about things but any help would be appreciated.

What are good brands?
How much weight will I save?
Any one recommend a particular servo?
Ko Propo PDS-2343 Digital Servo or Ko Propo PDS-2123 Digital Servo, are these good servo's and why is one 7.2 volts ? will 7.2 volts cause any problems or concerns ?


Thanks in advance for any help

Mick
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Old 07-05-2004, 06:36 AM   #2
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I've started to use Futabas S9550 lately and it looks to work real good. I used KO Propo PDS-2343 before but switched to 9550 because i could'nt fit my ESC in my CGM in a good way
I don't really feel any difference between them in driving ability but when i put on the scale it is some difference. I saved around 9-10 grams by using it and got 10mm extra room for electronics because the thinner design, even got a smaller esc so now my electronics compartment is like a luxurious (sp?) condo
The 9550 is 6 kg / 0.10 seconds
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Old 07-05-2004, 09:55 AM   #3
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the 9550 will be the best choice regarding weight and space. but it is slower than the top of the line sanwa, ko, and jr servos. and it is noticeable. i run the 9550's for the above attributes, but i insist in jumpering the +ive over to the +ive post on the esc so that it operates off of six cells. it would be too slow for me at .11sec/60*
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Old 07-05-2004, 06:13 PM   #4
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the Ko Propo 2123 is an excellent servo. If space is not an issue I would go with that. I have had the 9550 and it was an ok servo i needed it for the space but that isn't an issue now.
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Old 07-05-2004, 07:15 PM   #5
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S9550 is a great servo and speed shouldn't be an issue. It's plenty fast for Touring cars. It is digital if that means anything to you. I currently run one in my Yokomo SD and TRF 415. Helps alot with space and weight... kinda like what you are looking for...
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Old 07-05-2004, 07:27 PM   #6
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How much does that S9550 cost? I never thought of using a micro servo. Especially since I still run standard servos in my touring cars.
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Old 07-06-2004, 06:41 AM   #7
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Default 9550

it's actually not a micro servo. it is a standard sized servo in two of the three dimensions. it is just not as deep by over a 1/2". i believe that it was developed as an aileron servo for the wings of planes

it is around $79, but is tough to find in stock at times.
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Old 07-06-2004, 01:37 PM   #8
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Quote:
Originally posted by Zach P
the Ko Propo 2123 is an excellent servo. If space is not an issue I would go with that.
I'll second this.
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Old 07-06-2004, 02:03 PM   #9
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The Mi2 is actually a pretty lightweight car as it is, but for weight savings I've heard that JR servos weigh less than others, but I've never owned one, and don't know for sure.
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Old 07-07-2004, 03:53 AM   #10
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Is the Futaba S3150 Slim Digital Servo any good for TC applications?
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Old 07-07-2004, 04:14 AM   #11
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Looks like it may be a bit slow ?
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