Activity Stream

Activity Stream

  1. 1avidflyer added a post in a topic Axle size   

    I did once, but I tore the gear off at the same time.  It only slightly bent the axel and I straightened it back out.   I would stick with the 3/4" if it was me.  Just my 2 cents worth...  Jim Chuk
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  2. Goldendale-flyer added a topic in Avidfoxflyers General Hangar   

    Axle size
    I just bought an Avid MKIV HH with an Airdale stretch. It came with a nose wheel and main landing gear. I am having Brett at Airdale build a bush landing gear. The question is has anyone bent a 3/4" axle? I had a J-3 cub and it had 1-1/4" axles. Should I stick with the 3/4" size? I don't want to buy new wheels or brakes. Has anyone actualy seen a bent 3/4" axle?
     
    Thanks,
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  3. Luked added a post in a topic Small project update   

    Hi Ed,
     
    I'm not sure I understand which tubes you mean. maybe you could show a picture. The solid model in the picture is mostly just my starting point. It is exactly as the fuselage came from the Avid factory. Except for the following changes:
     
    - Tail was stretched 16 inches by previous owner (this is pretty easy to spot in the picture).
    - Some tubes in the floor and firewall area are not shown because I just haven't added them yet, or because they have been removed on the real plane.
    - The landing gear / seat truss is my new design.
     
    I'm going to be adding some new tubes in the front area to make up for some of the nose wheel structure I removed.
     
    One nice thing about solid modeling this think is that the software calculates the weight of everything for you. It will also tall you the center of gravity. The weight is still pretty meaningless at this point though because I have a lot more to add.
     
    One more edit: There are two tubes I still need to add right under the rear spare carry through. These will change the picture a little in that area 
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  4. EDMO added a post in a topic Small project update   

    Luke,
         After just a quick glance at your drawing, I think you need to move the rear of your overhead tubes to the outside corners of the rear spar crossover tube - going to the center gives no rigidity.   I can post a photo of mine if you want - but not saying mine is the only way to make them.
         With all your calculations, have you guestimated the bare fuselage weight?
    EDMO
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  5. Luked added a post in a topic Small project update   

    I think there are some actual engineers on the forum aren't there? It seems like I remember some members mentioning it. It would be nice to get some input from them as well. I've documented all of my calculations pretty clearly, so others could review them.
     
    My brother is a professional engineer, and he has reviewed them with me (pointed out a couple of mistakes). We both know there are some assumptions made to simplify things a little, but otherwise, the results seem pretty useful.
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  6. akflyer added a post in a topic Small project update   

    I do believe the original designer was self taught.... and he has made some amazing designs.   Maybe when the guys get back from OSH they can post up some numbers for you to play with and see what you come up with. 
     

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  7. Luked added a post in a topic Small project update   

    Hey Leni,
     
    This is actually for a bungee style gear, so the geometry of the tubes is different. The main part that I re-designed though is the truss that the bungees wrap around.
     
    It shouldn't be hard to do a truss analysis for a "bush gear style" though. If someone had some dimensions of their gear, I can see what I can come up with. There are some limitations to doing very simple truss analysis (joints method), but it can be pretty useful if you understand those limitations.
     
    Just to be clear, I'm not an engineer, but I took 2 years of engineering about 20 years ago before I went a different direction (long story). beyond what I learned in school, I'm self taught.
     
    Luke D.
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  8. akflyer added a post in a topic Small project update   

    Damn!  Kind of impressive to see someone actually doing some real engineering when making changes!  Will be interesting to see what you come up with for stresses on the cabane vee.  The one from Airdale has the cabane vee pulling in a straight line across the center, but I am certain that if you drop that centerline down (like Piper did on the cubs) then it will put much less stress on the seat truss and the gear attach points. 
     

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  9. Luked added a topic in Avidfoxflyers General Hangar   

    Small project update
    Well, things seem pretty quiet around here, so I thought I would show a little of what I've been working on. I finally got back to work on the Avid. Now that all of the stress calculations are done (mostly) for the new landing gear/seat truss, I wanted to see how it would fit with everything else on the plane.
     
    I made up a solid model of the fuselage. I'm also planning some other changes, and want to make sure all of the changes work together. Once I have all of the changes modeled, I'll be ready to order some tubing, and start cutting and welding
     
    Here is what I have so far.
     

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  10. EDMO added a post in a topic Hey Leni   

    Is any commercial source making the conversions or redrives for the 800?  Exhausts for planes?
    EDMO
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  11. Cropduster13 added a post in a topic Hey Leni   

    My friend  Skeeter is putting one in his mosquito, here in El Paso TX. hope it works better than the POS. MZ he had.
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  12. akflyer added a post in a topic Hey Leni   

    Sweet! I knew it would work!


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  13. Av8r3400 added a topic in Rotax and other engines   

    Hey Leni
    800 AC motor in a heli...


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  14. birddog486 added a post in a topic Highwing Cabane gear for sale   

    Measurements would be great. I've always thought they were interchangable but just saw a kitfox III a couple weeks ago and the gear mounts looked alot different than my Avid.
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  15. C5Engineer added a post in a topic Pic request MK4 elevator with electric trim   

    Thanks everyone!
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  16. High Country added a post in a topic Highwing Cabane gear for sale   

    Yes. on the gear legs up through the MK IV's not sure what KF had after that.
     
    No- on the cabane the widths are different 
     
    I had an avid gear, switched to a KF gear and now have a modified Ridge Runner gear. the fore and aft mounting locations are the same. might be off by just a smidge but it only took slight filing and all dropped into place on all three gears onto my avid airframe.
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  17. Xengineguy added a post in a topic Highwing Cabane gear for sale   

    Ed the outside measurement is. 85". From the ground to the planes underbelly is. 31". This is with 21 x12x8. Tires
    Bird dog I don't know if the avid is the same. If you want I. Could post some measurements.
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  18. birddog486 added a post in a topic Highwing Cabane gear for sale   

    does this Kitfox gear have the same mounting locations as the Avid?
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  19. birddog486 added a post in a topic Pic request MK4 elevator with electric trim   

    Joey, I have a full size drawing of the MK4 elevator that I used when I upgraded mine. Your welcome to use it if you think it would help.
     
    It shows the trim tab on the elevator on the other side of the drawing.
     
    Travis
     

     

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  20. EDMO added a post in a topic Pic request MK4 elevator with electric trim   

    It looks like Kitfox puts the servo inside the elevator between ribs, with an access plate on top;  and Avid puts it below the flat elevator with a nice fiberglass cover - I like that cover.
    EDMO
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  21. C150L added a topic in Avidfoxflyers General Hangar   

    Automobile use for Airventure week?
    Here's the thing. I'm looking for a RH fuel tank for our Cessna 150. (not 152) Was thinking if someone had access to one, I'd consider trading use of my 99 Grand Prix for the week of the convention in trade.
     
    Any thoughts?
     
    BTW, I'm about 30 minutes from Oshkosh and would assist on getting car to you. (but not so much on your gas.) I have another car I can use, so this one is sitting anyway.
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  22. looped added a post in a topic Pic request MK4 elevator with electric trim   

    Hi Joey hope this helps ,rusty

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  23. EDMO added a post in a topic Highwing Cabane gear for sale   

    Xguy,
          Just wondering what the track is on that gear, and how tall - My Grove is 80" outside of 600x6 tires, and 34" tall.
    EDMO
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  24. Xengineguy added a post in a topic Highwing Cabane gear for sale   

    Ok guys let's make it 1400.00. Need to buy some more parts! This is new never installed set! BUSH GEAR!
    Check out the cost at highwing llc
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  25. wypaul added a post in a topic Pic request MK4 elevator with electric trim   

    Joey, the Avid drawings are on the Yahoo site files section.  I don't seem to have any pictures of mine that I can lay my hands on.
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