Activity Stream

Activity Stream

  1. dholly added a post in a topic Avid Wing Tanks   

    @Ed - 22.5 gals, 22.0 gals usable total on the wings
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  2. akflyer added a post in a topic Bush gear failures   

    For what it is worth, I offered to sacrifice my plane and to beat the shit out of this gear and my plane PRIOR to them labeling it "bush gear"  I was declined and as a result many sets of gear were sold with many of the exact same results.  Bent planes and pissed off pilots.  I could start cranking our gear tomorrow and sell them as "bush gear" but I don't fly off manicured grass strips and I refuse to sell something I don't have 100% confidence in to put on my plane and really beat the crap out of it.  Bush gear on a hangar queen tested on grass and improved strips is an oxymoron to the utmost degree.  I truly hope you are not one of the guys that is soon posting pics of a gear failure and a bent up fuse.
    I know that I like to learn from others mistakes.  I damn sure don't have the time nor money to make them all myself.
     
    Your calcs show the total load.  Do they take into account the bending moments and how those total forces are applied and to where?  Did you actually look at the pics that Bob posted in his write up?  Did you actually look at the bending of the tubes with MINIMAL force applied? 

     
     
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  3. akflyer added a post in a topic Bush gear failures   

    As I said before.. I would much rather trust the computer models than the real life pireps, pictures and heart aches that multiple pilots have endured.  I would also not trust the bent gear I had to straighten or the testing I have done myself.  I would not trust the other guys that have actually modeled it and pulled and prodded.  To each their own.  Please make sure that you grease every landing and please don't try any off airport work unless your insurance covers helicoptering out the bent up fuse from a remote strip.

     
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  4. nlappos added a post in a topic Bush gear failures   

    Here is a full analysis of the Lowell Fitt gear. It shows that the spring is not too stiff, it is sized just right for the design conditions (8 feet per second drop at gross weight) and it does not go solid until you exceed that drop and get about 4 G's on impact. Note too that he has addad a cross bar across the top of the Cabane strut so the two aircraft sides now have additional bracing from the side forces the gear puts on them as it shoves the longeron inward.


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  5. akflyer added a post in a topic Gas Turbine Engine   

    If you are putting a turbine in your KF or Avid fuel burn is the least of your worries.  You are doing it to be bad ass cool.  That engine along with the Kool prop with Beta would be bad ass for playing around.  Practical, no, cool, yes. 

     
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  6. zadwit added a post in a topic exhaust "Y" too long??? also rudder pedal reinforcements?   

    mine is a botton mount.....Ill try to post some photos later today....this is a photo I took before I removed the old engine. You can see how close the elbo on the exhaust comes to the mount. IN fact KF factory shortened the elbo to clear the mount... Im thinking the only real way to fix this is get a newer mount that holds the engine different and allows for clearance....
    The bluehead is Daves install from Eastern Canada. He has the later mount for KF4. THe cowling support tube is not in the way. YOu can also see where Dave welded and extension to the header pipe and claims to gain 700 more RPM which could be true.....IF I try to run my elbo on the outside of the cowling support, I would have to hack up my cowling something terrible to make it all clear and fit. Still tryhing to figure out exactly what KF changed because Daves cowl and mine Look the same, the radial engine look cowling,,..


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  7. LSaupe added a post in a topic exhaust "Y" too long??? also rudder pedal reinforcements?   

    How much room do you need to get back?  I know they had a tighter bend (smaller radius) on the connecting elbow to alleviate some of this.  Header length can be important, especially on a tuned exhaust as it can change the power band, so you do need to exercise some caution and sort it out.
    My Model III did not have the reinforcement either.  No problems at 150 hours.  Only significant load might be when braking.  However many folks have accomplished and it is probably good insurance.
    Do you have the side mounting or bottom mounting on your crankcase?   Friend has a Model 2 with original 582 and no issues with exhaust clearance, so maybe if you can get some pics and measurements I can check against it.  My Model 3 was side mounted, but I think his is bottom mounted.
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  8. efil 01 added a post in a topic Electric Trim   

    mine is allen 4A with short travel (about 12mm) btw all is matter of geometry and depends of the actuator bell crank length on the tab. It simply works with 12v connexion. the major difficulty is to build a cage in the control surface and a bubble .
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  9. LSaupe added a post in a topic Header Tanks!!!!   

    I installed the very same setup.  Worked great and it did safe my bacon once.  Got distracted with some company during preflight (closed my tank valves after initially opening - cant recall why now).   Anyway, the light came on during run up.
    The 2nd tank fitting, aft of the vent fitting, assuming sight glass?
     
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  10. THE MACHINIST added a post in a topic Gas Turbine Engine   

    Lot of hassle and fuel burn to make 65hp
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  11. zadwit added a post in a topic Header Tanks!!!!   

    I already pulled out 12# of wires and relays and old guages that I dont need......you are right the panel is thick aluminum way too thick....so eventually Ill do somethign with that at well. This plane weighed 515# when I got it so dont want to add any more weight .....I like simple...
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  12. zadwit added a topic in Avidfoxflyers General Hangar   

    exhaust "Y" too long??? also rudder pedal reinforcements?
    I need advice.. My 1990 KF2 does not have any reinforcements on the rudder pedals. THere are no cracks in 700 hours but they are not reinforced. How critical is this????
    Also my new "Y" header pipe from my 582 BH is about 1 " longer than the old one that was on the plane. I cant make it fit without interfereing with the cowling support tubes that hold the engine cowl.....Has anyone seen this before??? Maybe I have an old 532  Y pipe????Ill try to get some photos tomorrow.
    I looked at a model IV classic kitfox and it has a completely different engine mount... that is probalby what I need if it will fit a model 2 kitfox. then the exhaust if clear of the engine mount....puzzled in Washington..
     
    Mark
    exfaa@outlook.com
     
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  13. Avid Randy added a post in a topic Electric Trim   

    I have not called them yet but was planning on this week.  Just didn't know if anyone had any problems or recommendations based on personal use.
    I will try to call tomorrow and see what they recommend.
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  14. NorthIdahoAvidflyer added a post in a topic Avid Drawing for Inspection??   

    Thank you Randy. Much appreciated. 
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  15. Avid Randy added a post in a topic Avid Drawing for Inspection??   

    Attached are drawings I made for you.  Use what you like.  Check your numbers and if anything is different I can change it and shoot it back to you or if you would want anything added as well. 
    I attached both JPEG and PDF.
    Wish You All The Best With Your Inspection!!!
    Randy
    Avid Flyer Mark IV Color Drawing.pdf

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  16. NorthIdahoAvidflyer added a post in a topic Avid Drawing for Inspection??   

    I worked it over and cleaned it up a little. I didn't need the dimensions and you could not read them once you printed it out anyways. 

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  17. EDMO added a post in a topic Avid Drawing for Inspection??   

    I can read those dimensions - What's wrong with this one?  EDMO
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  18. akflyer added a post in a topic 670 with 3/1 C box and IVO 3 blade UL?   

    If you have enough pitch to be able to keep the RPM and EGT in check then I don't see why it wont work.  I love my IVO, runs very smooth but with the talk about the kool prop I am close to pulling the trigger on that one.  I have heard from multiple people that the warp pulls harder than the IVO but the IVO runs smoother.  At this point I want the most pull I can get.
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  19. FoxDB added a post in a topic 670 with 3/1 C box and IVO 3 blade UL?   

    Did not have the egt working that's why I have not flown it again. It has a 72" diameter. Don't remember the static but it would rev up to say 6500 then gradually drop while still at full throttle but that was with the modified 582 pipe. So Mike Hair built a 618 version he was providing for Rotax Rick but I have not flown it yet.
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  20. marcusofcotton added a post in a topic Avid Drawing for Inspection??   

    What you have is nicer than the ones I've seen. Just fill in the dimensions.
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  21. wypaul added a post in a topic Avid Nose Wheel Steering Push Pull Tube   

    When I was building the F7a I found some weld nuts to make the pushrods and then used some 10-32 long set screws to make those pushrods. I tried to find where I bought the weld nuts but I just don't recall. I do have a few of the long grade 8 set screws that I can send you if you find the weld nuts.   My guess is that the original tube that you have had cap screws welded onto the end of the tube before it was chromed. That wil make them prone to break and don't recommend that method.  Also there is a modified setup with better geometry that should be much better on the Yahoo Avid flier site in the files section there is a drawing and somewhere there is a more complete set of instructions for this mod but I am not sure where but someone on this site my have them. 
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  22. akflyer added a post in a topic Avid Drawing for Inspection??   


     
    Sec III page 29 has a decent drawing of the MK IV but no measurements on it.
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  23. NorthIdahoAvidflyer added a post in a topic Avid Drawing for Inspection??   

    The inspection that requires a new registration, builders log, W&B, three views of the airplane, and application for airworthiness and a program letter.
    I may have to do what you suggested EDMO and write in the measurements. Attached is a photo of what I have.


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  24. TJay added a post in a topic Bush gear failures   

    That was interesting thanks for posting it.
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  25. EDMO added a post in a topic Avid Drawing for Inspection??   

    From what I understand, they will accept even a hand-drawn picture - Cant you write in your own measurements on the drawing?  EDMO
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