Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    150+ Forum Groupie mrmaster's Avatar
    Join Date
    Nov 2010
    Location
    Europe
    Posts
    167
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    which servos do you use? and which gear?

    Hi,

    obviously servos with 360 rotation are verrry expensive and probably you can control a normal gauge in a B737-800 with a normal servo and the correct gear, but where do you buy this gear? or do you have different approaches to this problem?

    All the best, Marc
    "It is LEGEN... wait for it.... DARY" ARCOM_by_Marc

  2. #2
    500+ This must be a daytime job
    Join Date
    Jul 2013
    Posts
    948
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    Marc

    Here is a link to building a brake pressure gauge using a servo

    http://www.737ng.co.uk/djb/brake_pressure_gauge.pdf

    The gears can be obtained here or just do a search on the web

    http://www.technobotsonline.com/inde...ategory_id=189

    David

  3. #3
    150+ Forum Groupie mrmaster's Avatar
    Join Date
    Nov 2010
    Location
    Europe
    Posts
    167
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    thank you very much! can you tell me how many degrees the hitec hs55 can turn? so that I can buy the adequate gears...

    Marc
    "It is LEGEN... wait for it.... DARY" ARCOM_by_Marc

  4. #4
    500+ This must be a daytime job 737NUT's Avatar
    Join Date
    Feb 2006
    Location
    Indianapolis, IN
    Posts
    778
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    Servocity.com they have everything you need to get full movement

  5. #5
    500+ This must be a daytime job
    Join Date
    Jul 2013
    Posts
    948
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    Marc

    From memory (not to be trusted!!) the servo moves around 180deg when used on opencockpits boards. When making the pressure gauge I think I used a 2:1 gear ratio. It is always better to have some movement to spare, especially as these servos get a bit jittery when approaching the full extent of their movement. Of course, the greater the gear ratio then the more chance of the needle appearing jittery. Try it and see

    David

  6. #6
    150+ Forum Groupie mrmaster's Avatar
    Join Date
    Nov 2010
    Location
    Europe
    Posts
    167
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    hi, I can't find the right gears on servocity.com could you give me a direct link?
    "It is LEGEN... wait for it.... DARY" ARCOM_by_Marc

  7. #7
    75+ Posting Member
    Join Date
    Dec 2006
    Location
    Israel
    Posts
    136
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    Hmm 360 deg servos very expencive?

    I would not say. as found today on ebay for prices 5-9 $
    Even purchassed one to play arround with

    regards
    Joseph

  8. #8
    150+ Forum Groupie
    Join Date
    May 2006
    Location
    london england
    Posts
    195
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    Quote Originally Posted by yoss View Post
    Hmm 360 deg servos very expencive?

    I would not say. as found today on ebay for prices 5-9 $
    Even purchassed one to play arround with

    regards
    Joseph
    http://www.ebay.co.uk/sch/i.html?_fr...sacat=See-All-
    just found these becuse ot your tip thanks

  9. #9
    75+ Posting Member
    Join Date
    Dec 2006
    Location
    Israel
    Posts
    136
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?


  10. #10
    500+ This must be a daytime job 737NUT's Avatar
    Join Date
    Feb 2006
    Location
    Indianapolis, IN
    Posts
    778
    Contribute If you enjoy reading the
    content here, click the below
    image to support MyCockpit site.
    Click Here To Contribute To Our Site

    Re: which servos do you use? and which gear?

    You need 48P or better for smooth operation. Beware of cheap servo's!!! They don't center the same or go to the same spot every time. You get what you pay for, cheap servo, inaccurate gauge movement/positioning. You don't need a 360deg or 180deg for that matter.
    http://servocity.com/html/48_pitch_p...ore_gears.html
    http://servocity.com/html/48_pitch_p...nion_gear.html
    http://servocity.com/html/pinion_gears.html
    http://servocity.com/html/servo_mount_gears.html

    Rob

Page 1 of 2 12 LastLast