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Thread: fuel sight gauges,red float ball

  1. #1

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    fuel sight gauges,red float ball

    I have a standard fuel sight gauge with red float balls from wag aero.They are two years old.One ball is intermittent with it's flotation.One day it has sunk out of sight another day it floats,some days it is half way .Rocking the aircraft appears to show it is not jamming?Ideas?

  2. #2

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    Quote Originally Posted by ron View Post
    I have a standard fuel sight gauge with red float balls from wag aero.They are two years old.One ball is intermittent with it's flotation.One day it has sunk out of sight another day it floats,some days it is half way .Rocking the aircraft appears to show it is not jamming?Ideas?
    Have you been running auto gas?
    Remember, These are the Good old Days!

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    Never

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    Richgj3's Avatar
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    Early Legends used them. They stuck a lot. Finally just stopped using the ball. In my airplane I took one out that was sticking. The other side has worked fine for 11 plus years. No auto gas ever used. There is no problem seeing the fuel level without the ball.

    Rich

  5. #5
    little wing's Avatar
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    Mine are free and float, but usually not on the top. Sometimes they sink all the way to the bottom. I never trust them because of this, I look at the lines behind the sight glass. If they are bent due to refraction there's gas, if they're straight, no fluid, no refraction, no gas. Gets me close then I can carefully look for the top of the fuel level.

  6. #6
    Steve Pierce's Avatar
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    Mine right tank ball just sunk. Originals were cork that were sealed. Cub Crafters and Univair have a new, plastic type version that I haven't had any issues with. Gonna get some next week and change both of mine. My left ball is black any dissemination hard to see especially since I'm blind isn't that eye.

    Let the juveniles with their mind in the gutter make derogatory comments under the premise of being funny.
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    cubdriver2's Avatar
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    Quote Originally Posted by OLDCROWE View Post
    Have you been running auto gas?
    20,000 gallons of it and it never bothered mine

    Glenn

    PS. But not red anymore
    Last edited by cubdriver2; 01-08-2017 at 10:44 AM.
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

  8. #8
    little wing's Avatar
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    Steve, mine are CC and have never worked reliably. Just saying the draining and hassle of replacement may not be worth it.
    Thanks Carl Guilliams thanked for this post

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    Richgj3's Avatar
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    Quote Originally Posted by cubdriver2 View Post
    20,000 gallons of it and it never bothered mine

    Glenn
    This may explain global warming

  10. #10
    Darrel Starr's Avatar
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    I used the plastic balls from Univair for 8 years; never a problem floating on top & still red.

  11. #11

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    so is it a quality control problem,if all boats floated like this the customer would be a little perturbed!

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    Steve Pierce's Avatar
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    It is a cork ball with a sealer on it. Mine is probably original and 44 years old. I would say it held up pretty good.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
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  13. #13

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    My Univair pith ball has performed well for 8 years now but don't always use that tank. Think I paid about 8 bucks for it.
    If you get lost while flying, don't try hail a cop. Pick up the first railroad you find and hug it until you get somewhere.

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    cubdriver2's Avatar
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    Quote Originally Posted by little wing View Post
    Steve, mine are CC and have never worked reliably. Just saying the draining and hassle of replacement may not be worth it.
    Don't trust them, use a timer

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

  15. #15
    Binty's Avatar
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    My UNIVAIR balls sunk within hours of installation. AV Gas only. Nightmare to change. My originals were fine- wish id never changed them!

  16. #16
    Steve Pierce's Avatar
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    I installed the new Univair ball a few years ago and no problem. Should have replaced the other one because as soon as I put fuel back in it sunk. Need to put the striped paint behind it. I use ethanol free auto gas most of the time but 100LL on cross countries.
    Steve Pierce

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  17. #17

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    Quote Originally Posted by Binty View Post
    My UNIVAIR balls sunk within hours of installation. AV Gas only. Nightmare to change. My originals were fine- wish id never changed them!

    I'm glad univair don't make aircraft floats.How hard can it be to make something that floats?
    Likes mike mcs repair liked this post

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    PerryB's Avatar
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    Ask the White Star line.....
    After Monday and Tuesday, even the calendar says WTF !
    Likes OLDCROWE, wireweinie, Richgj3, ron, cubdriver2 and 2 others liked this post

  19. #19

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    DO NOT TRUST THEM! I bought new balls and installed them in my Cub. After only a few months the paint on them got soft and they stuck at the top of the sight gauge making me believe the tanks were full when they were actually almost empty.
    Thanks ron thanked for this post
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  20. #20
    PerryB's Avatar
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    What surprises me is, I've never seen a thread on this matter make 20 posts without going sideways.
    After Monday and Tuesday, even the calendar says WTF !

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    wireweinie's Avatar
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    See post #6

    Web
    Life's tough . . . wear a cup.

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    Steve Pierce's Avatar
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    Curious if these are the cork balls or the newer plastic ones. How long ago were these issues? When were the balls purchased and installed?
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  23. #23
    cubdrvr's Avatar
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    Univair 2002, work great.

  24. #24
    kiwicubber's Avatar
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    Hi all, my balls are great and float fine.
    But I have a slight seepage from one gauge. I replaced the gauge with another one that also seeps, so I figured that I should replace the cork seals.
    Any tricks to getting the old seals and glass out?

    cheers Bill
    Bill and Neroli.
    www.supercub.co.nz

  25. #25
    Steve Pierce's Avatar
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    Remove, unscrew and be gentle.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers
    Thanks kiwicubber thanked for this post

  26. #26
    wireweinie's Avatar
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    Quote Originally Posted by kiwicubber View Post
    Hi all, my balls are great and float fine.
    But I have a slight seepage from one gauge. I replaced the gauge with another one that also seeps, so I figured that I should replace the cork seals.
    Any tricks to getting the old seals and glass out?

    cheers Bill
    Are you religious?

    Web
    Life's tough . . . wear a cup.
    Thanks kiwicubber thanked for this post

  27. #27
    www.SkupTech.com mike mcs repair's Avatar
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    Quote Originally Posted by kiwicubber View Post
    Hi all, my balls are great and float fine.
    But I have a slight seepage from one gauge. I replaced the gauge with another one that also seeps, so I figured that I should replace the cork seals.
    Any tricks to getting the old seals and glass out?

    cheers Bill
    also a good time to clean the glass, use a nylon brush inside and scotchbrite outside and acetone

  28. #28
    kiwicubber's Avatar
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    No
    Bill and Neroli.
    www.supercub.co.nz

  29. #29
    wireweinie's Avatar
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    You will be before your done with them, lol.

    +1000 for what Mr. Pierce said; be gentle. Glass tube inside an aluminum & brass assembly that hasn't been apart for 30 years or more. Some may not agree, but I think that heating the whole assembly MILDLY helps. Heat by setting it on a rooftop on a sunny day or something similar. And when you assemble, go back to Mr. Pierces advice and be gentle. Lots of glass tube get broken or chipped when put together with gorilla hands.

    Web
    Life's tough . . . wear a cup.
    Thanks kiwicubber thanked for this post

  30. #30
    kiwicubber's Avatar
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    Thanks Web, I have a better idea of what is involved now, having seen the photos of the components on the UNIVAIR website and the comments above. I’m not in a rush, so fingers crossed, I’ll be able to report success by the end of the day

    cheers Bill
    Bill and Neroli.
    www.supercub.co.nz

  31. #31
    Bearhawk Builder's Avatar
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    Just did mine and the aluminum tube section torques pretty good while disassembling the large end fitting to get the glass out - SCARY. Bead blasted the aluminum, cleaned the glass tube with carb cleaner, new seals and balls.
    Thanks kiwicubber thanked for this post

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