Activity Stream

Activity Stream



  1. EDMO added a post in a topic Fuel Line time   

    Thanks Paul,I have been reading my MSC catalog which usually give very detailed explanations about its products - About settled on the Tygon yellow translucent fuel lines at about $1.93 per foot, it wont break the bank because the fittings are 10x cheaper than AN.
    Last question: What clear tubing does Kitfox use for the sight gages? It must be gas resistant, and I think it is also used for the vent line from header tank, so you can verify you have fuel in the header tank. Further Last Question: Why is this not used for fuel supply lines?
    EDMO
    Well, One More for the engineering types: Tygon is Shore A-57 - What shore hardness is preferred for the barbed fittings - should it be soft as 60, but not more than 85? Which is best? I know you go to push-lock at 90.
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  2. wypaul added a post in a topic Fuel Line time   

    Ed may I suggest that you look at Tygon for your hosing pleasure.   It is available in the size you are looking for.
     
    http://www.usplastic.com/catalog/item.aspx?itemid=23487
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  3. Av8r3400 added a post in a topic I made the news...   



  4. EDMO added a post in a topic Fuel Line time   

    Yes Leni - I agree that FAA regs for "real" planes, are just guidelines for us experimenters - but sometimes they have enough experience to put some sense into them - Like the test for fuel flow and unusable fuel at adverse angles of attack.
    I don't know squat about 2-cycle engines - Maybe they are so inefficient that a 582cc engine burns more fuel than a 1800cc 4-cycle engine at max power? I was only taught that it takes x pounds of fuel to make x horsepower.

    What I do know - Is that my Soob came with a 3/8 line going to the Holly carb. This gives me sufficient reason to feed that line with same-size lines from the tanks. I also know what fuel pressure I need for that carb.
    Now, I have a choice - Go with rubber lines and those very expensive AN fittings, or educate myself enough to decide on what type of Poly-line will give the best service, and use cheap fittings.
    Since my FAA approved AMT school did not teach one minute about Poly-lines, I have to self-educate, or borrow knowledge from someone else. I don't have a clue as to what "Bing Blue" is made from, but it does not come in my size, and Doug says it is permeable, since you can smell gas, so I need to find a substitute.
    Meanwhile, I am trying to get my wings rebuilt, and busy weighing Bondo!
    EDMO
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  5. C5Engineer added a post in a topic Good lord it's no wonder two-strokes get a bad rap   

    Still there just have to dig a bit http://www.cps-parts.com/catalog/rtxpages/articles.php
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  6. akflyer added a post in a topic Glendo, WY Fly in   

    I am not sure I have ever heard of a flyin that they gave you gas money to attend!  That's awesome!  Sounds like a great time and a cool flyin.
     

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  7. akflyer added a post in a topic Good lord it's no wonder two-strokes get a bad rap   

    Do you know if the Mike Stratman articles are still up on the CPS site?  I had downloaded most of them to my lap top, but I am having issues with it right now and she don't want to fire up.  His articles were the closest thing to a "how to fly a 2 stroke for dummies" book.  It would be nice to get the full set of them posted up here to make it easier for the guys to find and read.
     
    I am with you, I would bet that over 90% of 2 stroke engine failures are due to operator error and could have been prevented with just a little bit of education.
     

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  8. akflyer added a post in a topic Fuel Line time   

    OK I gotta chime in here... The suber burns less gas at take off and at cruise than my 582..... could it possibly be that someone is over thinking or over engineering something again
     
     
    There are NO FAA requirements on the fuel flow testing for EXPERIMENTAL A.B. PLANES.... yes, they can be used as a guideline if you want to, but there is no REQUIREMENT TO.  WE are free to kill ourselves if we see fit to do so with a plane made out of electrical conduit and a duct taped on tarp if that is what flips our minnow.
     
    I got a little bit of sleep, but I am now on the slope and letting the misses earn her keep by trying to take care of our lil one   She gonna have her hands full with this one
     

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  9. akflyer added a post in a topic I made the news...   

    Holy wing wag bat man   Someone has been practicing his dutch rolls!  I wish my avid had that roll rate when I am on floats! 
     
    Nicely done news spot, it is awesome to see the local airports getting a good turn out and a good report out to the community.  I would be fostering that reporters new found flying bug!
     

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  10. wypaul added a post in a topic Rotax 912 Service Bulletin   

    Ordered a new pump for my 912A, with 65 hrs on it probably not necessary but they run better with fuel.
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  11. dholly added a post in a topic I made the news...   

    Ha! Reminiscent of OSH approach... "Yellow High-Wing Wag Your Wings!"
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  12. Av8r_Sed added a post in a topic I made the news...   

    I love to see those positive news stories.  Steve K does a nice job of spokesman.  Who's that nut waggin his wings though?
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  13. EDMO added a post in a topic Fuel Line time   

    Jim,From the best of my knowledge, to feed the 1800cc or 109 cubic inch Subaru, you need more gas flow at max power than the 582 - much like the Lycomings and Continental engines of that size, I think you are supposed to have 3/8 aluminum lines, which are 5/16 ID. There is a formula for fuel flow based on cubic inches, but I would have to go back to my books to find it.
    The original lines to feed my 2-barrel Holly carb were 3/8, so that is what I am going by for the system.
    The requirement from the FAA on fuel flow is 150% of consumption at max power for gravity systems, and 125% for pump systems. The system is supposed to be flow-tested to prove it meets the requirements.
    The confusion may come from the fact that at cruise my Soob will burn less gas than the 2-cycles, and they use 1/4 inch ID lines. The tubes on the caps are only passing air, which is less dense than gas, so they can be smaller. I have the 1/4 tubes on my caps too.
    Hope this makes sense, and helps explain my situation better. I am trying to get better educated on the different types of plastic fuel lines, and their costs and fittings.
    EDMO
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  14. C5Engineer added a post in a topic I made the news...   

    Cool!
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  15. 1avidflyer added a post in a topic Fuel Line time   

    Ed,  I wonder why you need 5/16" line.  I've used 1/4" on all the Avids I've had, never ran short of fuel.  Even the Jabiru with gravity feed was fine.  I have had the 1/4" aluminum tubes pointing forward on the gas caps on the last two Avids, and I'm sure that helps some.  JIm
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  16. 1avidflyer added a post in a topic I made the news...   

    Hey I like the way you did it better than the way I did.  Had an oil line blow 2 years ago, and landed in a to short field.  Made the news that night..... Hopefully I can finish the rebuild this winter.  Jim
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  17. Av8r3400 added a topic in Local Fly in's   

    I made the news...
    http://www.wjfw.com/stories.html?sku=20130907210324&display=video
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  18. EDMO added a post in a topic Fuel Line time   

    NOPE - Got to buy it - don't have it - Need to further my edumykation!SO, what can you tell my about all the Polys and Hoses?
    You getting any sleep - or you on slope and leaving poor Mrs to handle the hard part?
    EDMO
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  19. akflyer added a post in a topic Fuel Line time   

    so if its not broke ya just gotta fix it  
     

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  20. EDMO added a post in a topic Fuel Line time   

    Reading Spruce, and the Polyurethene got the highest praise in the ads - better than the polyetheline or whatever poly is there. I could see nylon getting brittle over time - but it seems to work fine in brake lines?Grainger is just too proud of that yellow - I think I will let them keep it.
    Thanks,
    EDMO
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  21. akflyer added a post in a topic 3rd Annual Silver Salmon Creek Flyout   

    Randy,
    Did you ever hit the kusty for silvers? I never even hit it this year after you showed me your super not so secret hole. I like the white sand beaches much better at your spot!


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  22. akflyer added a post in a topic McCarthy River Sunset Picture   

    How the bad word did I miss these pics before it was a great day of fishing and flying, but I'm sure I logged more hours flying than fishing darn my bad luck! My laptop went TU on me so I lost a ton of pictures I had downloaded from this day.


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  23. akflyer added a post in a topic Trying to embed a video   

    Bandit,

    I was over at bob's yesterday trying to get his IE to play embedded videos and no mater what I did it just wouldn't do it. Switched him over to Firefox and all works well now. You may try downloading Firefox and use that instead of IE.. I hate IE for a multitude of reasons


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  24. akflyer added a post in a topic Streaking   

    Sweet pics! She looks good streaking!


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  25. dholly added a post in a topic Fuel Line time   

    As I said Ed, I couldn't find 5/16" blue line either so I used Gates Barricade. The link I provided in Post #2 might help you re: sizes available. Nylon line may work well in cars but I wouldn't put it in my aircraft, IMHO. Only other plastic fuel line I would feel comfortable using besides Bing would be yellow Tygon. Graingers has 3/8" id... But... $250 for 50'... OUCH!
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