Digital / standare Servo question (HITEC)

[Ed Alt]

Re Hitec servo accuracy, you can achieve a similar effect by adding between 1/16 to 3/32 of slop per control linkage and stay with your current servos.  Sure they work and they are cheaper, but they have been measured to have 5 to 6 times less centering accuracy than a good Futaba or JR digital servo. The difference is enough to see without even hooking them up to a protractor pointer.  It's obvious in a side-by-side comparison on the bench and you can definitely feel it in the air.

They are great sport servos though.

Ed
  ----- Original Message ----- 
  From: vicenterc at comcast.net 
  To: discussion at nsrca.org ; discussion at nsrca.org 
  Cc: Dean Pappas 
  Sent: Monday, December 06, 2004 5:27 PM
  Subject: RE: Digital / standare Servo question (HITEC)


  I have a related question.  

  What is the experience (good or bad) using HITEC servos in pattern?  

  Clearly they have options and are definitively cheaper than other brands (JR and Futaba).  Any feedback is welcome.

  Thanks,

  Vince Bortone

    -------------- Original message -------------- 

    > I'll ditto what Ed said. 
    > 
    > Dean Pappas 
    > Sr. Design Engineer 
    > Kodeos Communications 
    > 111 Corporate Blvd. 
    > South Plainfield, N.J. 07080 
    > (908) 222-7817 phone 
    > (908) 222-2392 fax 
    > d.pappas at kodeos.com 
    > 
    > 
    > -----Original Message----- 
    > From: discussion-request at nsrca.org 
    > [mailto:discussion-request at nsrca.org]On Behalf Of Ed Miller 
    > Sent: Monday, December 06, 2004 4:04 PM 
    > To: discussion at nsrca.org 
    > Subject: Re: Digital / standare Servo question 
    > 
    > 
    > The Futaba 9202 is a great all around general purpose servo. I have and 
    > still use them. My Elan has one on the elevator with nearly 400 flights. In 
    > one plane ( Hanson Dalotel ) I went from 9202's to 9252's in the elevator 
    > and ailerons and noticed a positive improvement. The 9252's are faster and 
    > much stronger on center than the 9202's. The 9303's are heavy as they have 
    > brass gears, the gears also wear quickly so I'd avoid them. Currently I use 
    > 9151's on rudder, 9252's on elevator and either 9252's on ailerons or the 
    > low profile 9550 on aileron's with success. 
    > Biggest plus's I can see to the digitals are the centering, speed and 
    > strength around neutral over the standard coreless servos. I expected a high 
    > higher current drain with the digitals I use, 9252's, 9550 and 9151's but 
    > although they use more current, it has not been an issue. 
    > Ed M. 
    > ----- Original Message ----- 
    > From: "Paul Horan" 
    > To: 
    > Sent: Monday, December 06, 2004 3:32 PM 
    > Subject: Digital / standare Servo question 
    > 
    > 
    > > Hi, 
    > > I am looking for feedback on what to choose as a general purpose servo. 
    > > I have been using the Futaba coreless 9202 but am also considering the 
    > > Digital 9252. 
    > > For rudder I am considering changing from a 9202 to a 9303. 
    > > First - what are the relative advantages of standard servos vs digital 
    > > servos. 
    > > Second - are the 9202 standard the 9252 digital and 9303 standard 
    > > "good" choices. 
    > > Thanks, 
    > > Paul 
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