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 6 of 6

  1. #1

    Join Date
    Feb 2007
    Location
    fresno, CA
    Posts
    3,968
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    Tee Dee 049/051 venturi hole size question

    going thru the TeeDee 049/051's i have tonight and noticed that the early model engines i have from the early 60's have a smaller diameter hole in the venturi than the later mid 70's on up with the screen..........not an exact dimension, but the early ones seem to have a .070" versus the later which are close to .110" hole........did Cox increase this dimension due to the screen?
    will removing the screen hurt the suction?
    AMA 70865
    Team Satellite

  2. #2

    Join Date
    Dec 2004
    Location
    Leduc, AB, CANADA
    Posts
    19
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tee Dee 049/051 venturi hole size question

    The latest Cox I.D. was .117". No, removing the screen will not hurt the suction at all. The dimension was increased for more power. Cheers, Paul

  3. #3
    controlliner's Avatar
    Join Date
    Mar 2009
    Location
    Kingston, NS, CANADA
    Posts
    1,118
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tee Dee 049/051 venturi hole size question

    Hello Paul, Long time no see. Last time I seen you We were at the Atlantic Zone MAAC meeting in Dartmouth N.S. Are you still building up Mouse engines?
    JimWest
    \"Keep it clean and not too lean\" Duke Fox

  4. #4

    Join Date
    Feb 2007
    Location
    fresno, CA
    Posts
    3,968
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tee Dee 049/051 venturi hole size question


    ORIGINAL: paulgibeault

    The latest Cox I.D. was .117''. No, removing the screen will not hurt the suction at all. The dimension was increased for more power. Cheers, Paul
    Paul, thx for replying.
    i like to pop the screens out and then turn the venturis out to the edge to eliminate the step...........i use the TD's in FF so we don't need the screens, and use the venturi for the initial prime.
    AMA 70865
    Team Satellite

  5. #5

    Join Date
    Feb 2007
    Location
    Angleton, TX
    Posts
    1,802
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tee Dee 049/051 venturi hole size question

    I was having fuel draw issues several years back with a newer, larger venturi TD. Couldn't get a very consistent run in a sport plane with a 1oz Sullivan tank with standard vent. Dickeybird sent me one of his sleeved venturis that has a smaller ID. Once installed, my fuel draw issues vanished. The TD still has no problems drawing the fuel and runs pretty consistently. It may(or may not) have caused a slight loss of power, but it made the engine easier to run and the plane more enjoyable to fly without the need to fiddle with balloon tanks. Just my experience. Your mileage will surely vary. I'm not sure of the ID he used on those conversions.
    Tee Bee

  6. #6

    Join Date
    Dec 2004
    Location
    Leduc, AB, CANADA
    Posts
    19
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Tee Dee 049/051 venturi hole size question

    Hi Jim,

    Wow, that was some time ago...!

    YES, in 2010/11 I produced a small series ~(24) of what I call Open Mouse Race quality engines for $125ea.
    They looked essentially just like a std. Black Widow but ran much faster (of course). Some engines even reached Europe, notably Portugal & England.
    It turned out to be an exercise in essentially working for free. I didn't feel a whole lot better knowing that easily 2/3rds of my engines will never see a
    contest. It turns out that interest in Mouse Race has declined a great deal & so I quit producing them. I still fly Open Mouse in Eugene, Ore. every May though.

    I broke the Open Vintage Class I record in England last year with one of my Cox engines too. I'm thinking of going again to see if I can boost it further perhaps...

    BTW, I don't browse this forum very often. A buddy sent me an email with the thread about the Picco P-5 engine, so I found your posting... Strangely enough,
    only one P-05 has done well (that I've seen) & it's flown by the AMA National record holder Jerry Rocha.

    I hope you're doing well, Jim.

    Cheers, Paul ( in Leduc)


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 05:00 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.