Fut. 9150s

[Richard Strickland]

Ihncheol,

Will do--but it'll be a while.  I have 9154s in the new Temptation we've been madly building(since I cracked up the first one) and the back-up OMS.  I'm going to try to piece the first one back together(have to rebuild about a third of the fuse and a complete left wing panel) and use it for practice with the re-geared 9150s.  Jim Woodward and I have been having a tiny debate regarding speed vs torque--In a nutshell, his feeling is more torque and reasonable speed is the way to go and I've always felt more speed and reasonable torque is best. The feel of the airplane was better with the 9154s as I changed them on back to back eves.--but Jim brought up a good point regarding how much expo and how ATV is set and so forth would affect 'feel'. He went through several trials with increasing torque servos on back to back eves. with the same results--that is--he felt his airplane improved correspondingly.  I would suggest you try them as is and see what you think. I was just happy to find the conversion looks like it will work--otherwise the servos weren't worth much to me or apparently to anyone else.
          Richard
  ----- Original Message ----- 
  From: Ihncheol Park 
  To: discussion at nsrca.org 
  Sent: Tuesday, July 13, 2004 11:03 PM
  Subject: RE: Fut. 9150s


  Richard,

  Keep me posted regarding the 9150 performance with the 9154 gear.  did you replace all the gears in 9150?
  I just got a couple of 9150, but have not used them yet.  If the 9154 gear sets work well, I will replace mine also.

  Ihncheol Park
    -----Original Message-----
    From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On Behalf Of Richard Strickland
    Sent: Tuesday, July 13, 2004 10:09 AM
    To: NSRCA
    Subject: Fut. 9150s


    All Futaba Guys,

    A couple years ago, when I started freeing up some time for this; I found my old servos weren't giving me the response on some of this stuff that we do and started looking into digital.  I ended up getting a couple of sets of 9150s which were a bit slow and still weren't great for snaps or feel.  Fut. came out with 9154s which are considerably faster with less torque.  I bought a set and am very pleased with them.  As you may have seen, I put the 9150s up for sale recently and got NO response--got me to thinking--I wonder if there is anything I can do to perk these four little doggies up.  Looking at the spec sheets on them; I noticed the corresponding reduction of torque to the increase in speed.  Hmmmm--wonder if it's just a gear-set change?  Couldn't get a straight answer from Futaba, Tony says they've got all separate part numbers, so I ordered a couple 9154 gear-sets; put one in a 9150 last night and it APPEARS to run at the same speed as the 9154s. The servo turns from neutral to the end point as quickly as I ever move the stick--and the old ones did not. The 9154s are accurate enough that you can see your heart beat on the straight flight after the Cuban with 4/8 and 2/2.

    Caution--this is for information only.  I may be wrong.  I DO plan on flying them with the new gear-sets and the 9150s are off the market.
                     Richard
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