Latest Activity

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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Riz: Where have you read of fuel pump failures on 912? The fuel pump does not fail as in the engine stops. No. It fails as in weeping holes leak oil and that's an indication that either the plunger O ring is leaking or the diaphram is leaking. It ...
    30 mins ago
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    Rizwan Bukhari
    "Rizwan Bukhari" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Thanks Abid, I have been reading about the mechanical pump failures, I would think that all major trike manufacturers have a plan for that and would encourage electric fuel pumps to be installed as a back up. I don't know if I am being too ...
    52 mins ago
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    Charlie Peck
    Charlie Peck The think that makes me the most uncomfortable about adding a return line is that then, you would have to put in a relief valve to keep fuel pressure up to where it should be, and added hoses and lines, etc. Just more complications and additional parts that can fail. I like to keep things simple if possible.
    1 hour ago
    • Abid Farooqui
      ×
      Abid Farooqui Not a relief valve Charlie. On the return line side barb, there is an idle jet restrictor with a very tiny hole in it
      22 mins ago
    • Abid Farooqui
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      Abid Farooqui http://rivaracing.com/i-17283646-riva-fuel-line-return-restrictor.html
      19 mins ago
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    Charlie Peck
    Charlie Peck Thanks for the link, Abid. I took a look at it, and that's a new one on me. I don't fly in hot weather, so I've never had a reason for concern about vapor lock. Keep up with the good information.
    1 hour ago
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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Hi Charlie: Perhaps a read of this article will help you understand why return line is recommended http://www.experimentalaircraft.info/articles/rotax-fuel-systems.php It has a Fig 5 from Rotax manual which shows return line back to the tank (8). ...
    2 hours ago
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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Hi Riz: To answer your question specifically. You cannot change jack on a SLSA without approval in writing and without manufacturer taking complete compliance and future responsibility for it. In Type Certificated aircraft there is process to do ...
    2 hours ago
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    Charlie Peck
    Charlie Peck Still flyin' after all these years.
    2 hours ago
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    Charlie Peck
    "Charlie Peck" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    I guess I must be out of the loop on all this stuff, but my 912 80 hp never had a return line on the fuel pump when it came new from the factory in 2007. But after a few years, I did have a problem with my carbs overflowing with fuel. I did ...
    2 hours ago
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    Rizwan Bukhari
    "Rizwan Bukhari" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    So I am still lost here...I guess my question is that if you buy a new or used SLSA and if you want to do something to improve or add (engine related) such as an electronic fuel pump or carb heater then how do you go about it? How do you get the ...
    3 hours ago
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    Steve Beste
    "Steve Beste" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Abid, you would probably be smart to keep the old fuel pump rather than replace (if the regs allowed you to do so). Ever hear of the Waddington Effect? It says that mechanical things are most likely to fail just after they've been messed with. As a ...
    3 hours ago
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    Doug Boyle
    "Doug Boyle" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    This is a great topic for all trike pilots! The only thing I know is: that my jock strap is coarse and Coronas are better with a lime....
    4 hours ago
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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    BTW, in my experience the very old Pierburg fuel pumps were the best. The Bing that came after totally sucked and failed. Then they made some changes and they got a bit better. Then now they have these Corona fuel pumps and they are ok except when ...
    6 hours ago
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    Bill  Pilgrim
    "Bill Pilgrim" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Hey Larry, you are certainly very lucky to have a witch to flip ;-) It reminded me of the two little snakes https://www.youtube.com/watch?v=kZo_7mYiBAY Sorry to hijack your thread Rizzy, but I couldn't resist.
    6 hours ago
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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Larry till 2013 Rotax listed return line as optional. With new pumps and after studying field experience, its required. Those trikes early on had old fuel pumps with optional return line but in 2013 with the change of fuel pumps it is required. ...
    6 hours ago
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    Eric  Nakamoto
    Eric Nakamoto If there is anyone that has a wing that has or put 1000 hours on a wing, please contact me. I would really appreciate it. Has anyone flown a wing longer than 5 years under 1000 hours?
    6 hours ago
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    Larry  Mednick
    "Larry Mednick" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Abid, I'm referring to the Apollo Fox and 4-5 Apollo trikes after the government put ethanol in our fuel. Your memory is terrible. How many of you Trike pilots on this site are using plastic fuel filters? How many of you know how many microns your ...
    7 hours ago
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    Rizwan Bukhari
    "Rizwan Bukhari" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Thanks Larry, Abid and Doug. I definitely would like to have an electric fuel ump on my new trike. One more question about SLSAs, if the manufacturer gives the permission and you do any modification (such as adding electric fuel pump) with a A & P ...
    7 hours ago
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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Never seen that ever. Fully blocked fuel filter which was of 70 microns metal mesh as recommended by Rotax and definitely never a collapsed fuel filter Do you use a finger strainer in the fuel pickup in the tank? Also a 70 micron metal mesh fuel ...
    8 hours ago
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    Larry  Mednick
    "Larry Mednick" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Not on an SLSA though Doug. Abid, water can clog a fuel filter. Yes there are large enough filters to let it pass, but many of us have somehow wound up with blocked fuel filters. Even collapsed fuel filters. Sure there are ways to avoid all that, ...
    8 hours ago
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    Doug Boyle
    "Doug Boyle" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    In the Airborne XT 912 fuel circuit the most logical place to install the electric fuel pump would be in the location of the shut-off valve. I propose eliminating the shut-off valve and plumbing the Facet electric pump in its place. The mounting ...
    12 hours ago
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    Doug Boyle
    Doug Boyle commented on Doug Boyle's picture.
    Thanks Larry! Tony Ford has been dreaming about flying for a long time, and thanks to you made the Reborne his and is now beginning to discover the freedom that flying possesses. Having visualized this day for so long, Tony was easy to train! ...
    12 hours ago
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    Abid Farooqui
    "Abid Farooqui" commented on Rizwan Bukhari's Blog "Mechanical vs Electric fuel pump on a 912 80hp".
    Clogged fuel filter can make your engine starve either way Larry. It just depends on how clogged it is. The way to not have a clogged fuel filter is to put a coarse fuel filter (strainer) in the fuel tank right at the pickup. Anything smaller than ...
    13 hours ago
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    Larry  Mednick
    Larry Mednick commented on Doug Boyle's picture.
    And congrats to you as well Doug.
    13 hours ago

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