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  1. J

    Converting 2-seater to 4-seater?

    Agree! This fact should also be in consideration while dealing with months long assembly time. However, my second 80 lbs is only a year old and not 80 lbs at all at this time! But again, this conversion seems out of question at this point after doing some further research and going thru the...
  2. J

    Converting 2-seater to 4-seater?

    This is not a bad idea at all, every ounce counts when you are trying to lift yourself in the air!
  3. J

    Converting 2-seater to 4-seater?

    Thanks! Yes, Jabiru 430 kit could be a good options for my use case. I am going to try and find out if Jabiru 430 can be fitted with a Rotax 914 UL. Jabiru 3300 6-cylinder does not have the most reliable track record, outputs 120hp and weighs dry at about 185 lbs, where as Rotax 914 UL produces...
  4. J

    Converting 2-seater to 4-seater?

    Thanks for your input! Even though I hold an engineering degree and understand basic to advanced concepts of physics, I am inclining towards getting a 2-seater kit and not modify it at all. I am glad I could get some replies from a 5 year old thread. Thanks all!
  5. J

    Converting 2-seater to 4-seater?

    Thanks! Yep, the structural strength of the airframe would definitely be an important factor to consider while installing the seats. And yes, I did realize that I did not include the fuel load. A 4-seater kit (Sling or Van's) are almost twice as expensive as their 2-seater kits and that places...
  6. J

    Converting 2-seater to 4-seater?

    Thanks for the reply! Can a kit-plane like Sling 2 kit be modified and applied for Experimental Certificate? One important fact I missed in my calculation is the fuel load. The useful load of 696 lbs also includes fuel. The full-tank fuel load on a Sling 2 would be about 245 lbs and it totally...
  7. J

    Converting 2-seater to 4-seater?

    2023 Sling 2 - 912 ULS has a Maximum Useful Load of 696 lbs (316 Kg). I weigh 150 lb, my wife weighs 165 lb and my two kids are each 80 lbs each, all four of us totaling at about 475 lbs. If I add 35 lbs for two extra seats and 5 lbs for two extra headsets, leading my total weight to 515 lbs...
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