Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Results 1 to 14 of 14

  1. #1

    Join Date
    Sep 2002
    Location
    TX
    Posts
    1
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    Extension on needle valve

    I have a OS 46 and the needle valve does not extend outside the cowl. Does anyone have any ideas on what can be done to extend something on the needle valve so the engine can be tuned.

  2. #2
    Smoky's Avatar
    Join Date
    Jul 2003
    Location
    Meadow Lake, SK, CANADA
    Posts
    199
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    On my OS .61 I used a piece of music wire poked into the center hole on the Needle valve,
    and soldered it in. I then tightened the set screw to hold it there. The 1st one wasn't soldered and fell out. I then bent the protruding end like the end of a T pin. so It was easier to make fine adjustments with.
    The worst thing about this set up is you have to unscrew and remove the needle valve before removing the cowl. I tried the same thing on a 4 stroke Saito .91, but it
    Vibrated too much and wore an oblong hole in the cowling, before it too snapped off, I just use a long slender screwdriver in the hole now. I seldom have to adjust this needle anyway.

    Smoky.

  3. #3

    Join Date
    Oct 2002
    Location
    Philadelphia, PA
    Posts
    2,065
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    You can also use a small L-shaped hex key as a ready made extension. The kind that come with a package of wheel collars is good. Be sure to put thread locker on the set screw.
    Dave Segal

  4. #4

    Join Date
    Mar 2003
    Location
    Canton, MI
    Posts
    583
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    Central Hobbies has a needle valve extention for $11.00.
    Check it out ... seems well thought out.
    Thats Just My Opinion - I Could Be Wrong ( Dennis Miller )

  5. #5
    MinnFlyer's Avatar
    Join Date
    Apr 2002
    Location
    Willmar, MN
    Posts
    28,519
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    Most Needle Valves have a hole with a set screw so that you can simply place a piece of scrap rod (like push rod) into the hole, and hold it with the set screw. Then, as others have said, bend the end into an "L" shape to give you something to turn.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Xv64523.jpg 
Views:	3 
Size:	29.4 KB 
ID:	76228  
    Mike B. AMA# 42400 www.gettingairborne.com
    Ultra Sport Brotherhood #2 - Waco Brother #188 - Cub Brother #2

    \"Those are my principles. If you don’t like them, I have others.\" - Groucho Marx

  6. #6

    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    1,045
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    You can dress down a 2-56 Allyn head sheet metal screw (DuBro) so it will fit in the hole in the needle valve, and tighten the set screw on it. Then use the 2-56 size ball driver through a small hole in your cowl to adjust the engine. Neat and clean solution, nothing outside the cowl.

    Clair

  7. #7

    Join Date
    Mar 2002
    Location
    Brandon, MS
    Posts
    2,756
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    Use soft wire, accidents do happen.
    Ed M.
    Did you bother to Read The Fine Manual yet?

  8. #8

    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    1,045
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    If I can post pictures of my TT 120, you can see the head of the sheet metal screw at the end of the needle valve, ready for a ball driver for adjustment.

    Clair
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Tr50982.jpg 
Views:	8 
Size:	64.6 KB 
ID:	76355   Click image for larger version. 

Name:	To43261.jpg 
Views:	5 
Size:	65.8 KB 
ID:	76356  

  9. #9
    GrnBrt's Avatar
    Join Date
    Dec 2001
    Location
    Everett, WA
    Posts
    6,988
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    How about the needle valve on ST engines??? They have a piece of wire in the center that you cannot get out, nor can you add an extension. It has bugged me for a long time, this design.
    Art Grabow SR
    Senior forum Manager

    US Army Special forces, mess with the best, die like the rest!

    http://mysite.verizon.net/res0bf5n/houseofgrabow/index.html
    http://mysite.verizon.net/res0bf5n/houseofgrabow/index.html

  10. #10
    MinnFlyer's Avatar
    Join Date
    Apr 2002
    Location
    Willmar, MN
    Posts
    28,519
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    Yea Art, I think Enya used to do that too. I just came across one of those in my shop this morning.
    Mike B. AMA# 42400 www.gettingairborne.com
    Ultra Sport Brotherhood #2 - Waco Brother #188 - Cub Brother #2

    \"Those are my principles. If you don’t like them, I have others.\" - Groucho Marx

  11. #11

    Join Date
    Jan 2002
    Location
    Hubbardston, MA
    Posts
    5,549
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    Art,
    Can't you grind a slot in the end with a Dremel and use a screw driver?
    Dennis-
    He who dies with the most toys is, none the less, still dead.

  12. #12

    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    1,045
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    Art, I know what you mean about the ST engines. Cut the wire off to about 1/4" in length, and then solder a piece of 3/32" brass tubing over the stub, and also with your wire extension in it. Or, solder the SM screw, as in my pictures, into the brass tube. Would be easier if they just followed the OS approach, wouldn't it!


    Clair

  13. #13

    Join Date
    Dec 1969
    Location
    Muskegon, MI
    Posts
    598
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    DB-I grind a slot in the head for a screw driver, or , as an option, grind flats on opposite sides of the nob and cut a matching slot across the end of a dowel or brass tube tha engages it. Extending a wire through a hole in the cowl just makes the cowl hard to get off...JIM
    FORTY-FIVE YEARS IN RADIO CONTROL

  14. #14
    hercibird's Avatar
    Join Date
    Jan 2004
    Location
    Mobile, AL
    Posts
    86
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Extension on needle valve

    I had the same problem with my Fox .60. not having enough room outside the cowl. I took an old needle and cut the needle off leaving the grip. I made a collar out of aluminum tubing and JB welded the two needle grips together using the collar to keep it all together. Works great and looks stock!
    \"When landing, the probability of survival is inversely proportional to the angle of arrival.\"


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 11:25 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.