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Old Nov 20, 2006, 10:38 AM
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Michigan
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I have tested and used the Dymond 4.7. I forgot to put it in my post. It was the best sub 5 gram servo. Actually it was the only sub 5 gram servo that had acceptable resolution and centering. The best overall was the E-Flite S-60 which is 5 grams without the lower servo case and no servo arm. I wish they were not out of stock for the next couple of months.

Larry
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Old Nov 20, 2006, 08:31 PM
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KatManDEW's Avatar
USA, OH, Newark
Joined Sep 2001
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Quote:
I tested the following servos: Futaba 3110, HS 55, Futaba 3108, Airtronics 94091, Eflight 75, Saturn 4.4, HS-50, GWS Pico, GWS Naro, Interflight 4.3, JR241, FMA PS 20, Saturn 5.4, Bluebird 303, Cirrus CS 101, Eflight S-60 and Waypoint 60.
I would be interested to hear how these compare to the Dymond 4.7's. I got some Dymonds a few weeks ago and I'm stunned by how much better they feel flying than what I've used before (several of the above).
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Old Nov 20, 2006, 09:37 PM
Begin with end in mind...
power's Avatar
Eagle Lake, Minnesota
Joined Apr 2003
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Quote:
Originally Posted by KatManDEW
I would be interested to hear how these compare to the Dymond 4.7's. I got some Dymonds a few weeks ago and I'm stunned by how much better they feel flying than what I've used before (several of the above).

I hear ya Kat, the Dymonds have won me over. I just ordered a half dozen more. Not only do they feel better in the air, they are very fast and did you notice the construction? For a $20.00 servo there was a lot of attention to quality.

Until someone can produce another servo with this quality,speed,weight, centering,and what is often over looked, "current draw". I see no reason to spend $5.00 to $7.00 less on lower quality. The Dymonds are going to be very hard to beat

Mike
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Old Aug 22, 2007, 11:22 AM
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53859 Niederkassel, Germany
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I just received two new Hitec HS-55 today, and they came with different servo arms:
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Old Aug 22, 2007, 01:44 PM
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Columbus, OH
Joined Mar 2005
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That's good. I once spent about an hour making those long ones out of plywood.

Tom
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Old Aug 22, 2007, 03:40 PM
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USA, OH, Newark
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I just ordered another dozen Dymond 4.7's. I wish there were bigger arms available for them.
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Old Aug 22, 2007, 06:26 PM
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From where,plz? I am looking for them.
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Old Aug 22, 2007, 07:23 PM
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Jacksonville, Florida
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http://www.rc-dymond.com/order_servo_dymond.htm
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Old Aug 22, 2007, 08:46 PM
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I thought they were out of stock.
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Old Aug 22, 2007, 09:08 PM
Oly crap.. Deese ease not gud!
hpapilot's Avatar
USA, NC, Kernersville
Joined Nov 2006
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Quote:
Originally Posted by KatManDEW
I just ordered another dozen Dymond 4.7's. I wish there were bigger arms available for them.
You really don't need long servo arms, just use shorter control horns on the surface. I use mostly D-47's on indoor planes and have over 60 degrees of throw on a few using stock arms.

RJ
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Old Aug 22, 2007, 10:16 PM
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Quote:
You really don't need long servo arms, just use shorter control horns on the surface.
That's what I've been doing. But it doesn't work quite as well as I would like with the stock control horns on some "ARF" foamies, which can't be shortened.
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Old Aug 23, 2007, 09:00 AM
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53859 Niederkassel, Germany
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Quote:
Originally Posted by hpapilot
You really don't need long servo arms, just use shorter control horns on the surface. ...
RJ
Longer arms provide more precision.

Jürgen
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Old Aug 23, 2007, 09:41 AM
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White Salmon, Wa
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Quote:
Originally Posted by Jurgen Heilig
Longer arms provide more precision.

Jürgen
How do you figure that?
Longer control horns at the control surface with a short arm at the servo will produce more precision. Is that what you meant?
RCA
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Old Aug 23, 2007, 10:22 AM
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USA, AZ, Flagstaff
Joined Mar 2003
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I like long arms/horns.

Long arms AND control horns give you bigger arm/horn movement for a given angle of control surface movement. This larger movement is a good thing... making up for some of the slop in your linkage and/or hinges. It also seems is easier to get rid of the "slack" in pull-pull controls... it does feel more precise.

Quote:
Originally Posted by RCAV8R13
How do you figure that?
Longer control horns at the control surface with a short arm at the servo will produce more precision. Is that what you meant?
RCA
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Old Aug 23, 2007, 08:14 PM
Oly crap.. Deese ease not gud!
hpapilot's Avatar
USA, NC, Kernersville
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Haha oh great, what a debate I sparked.

Obviously with short servo arms and long control horns, you gain precision and torque, but loose speed and surface movement, and vice versa.

But yes, linkages tend to suffer less slop when BOTH the servo arms and control horns are longer. You get the same amount of throw with less slop...


RJ
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