Activity Stream

Activity Stream



  1. SuberAvid added a post in a topic Leading Edge Slats   

    Kenneth, I don't know if anyone has just used a single panel on the outboard end of the wing.  He just said some left a wider gap at the inboard end and it retained close to the same climb rate.
     
    Ed, I am surpised at the 1mm opening in the Zenith fixed slats, it seems like that would defeat the purpose.  The fixed slot Dakota cub wings are a lot more than that and most of the moving slats seem to open to 3" or so.  If you look at the videos of the Just STOL and the SQ2 you cannot deny that they work a lot more than just VG's.  The caution will be not to overdo it on landing and drop the plane in too hard. What I would really like to see is the lower stall speed for takeoff.
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  2. SuberAvid added a post in a topic Contemplating Frankenstein   

    Glad to hear you will be back in the air soon Dave!
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  3. EDMO added a post in a topic Avid--VW combo.   

    Paul,
         Didn't someone make water-cooled heads for the VW?
    EDMO
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  4. 1avidflyer added a post in a topic cog belt?   

    Are you asking about the reduction drive, or just the cog belt?  If it's just the belt, google the size and you should be able to find it on line.   Jim
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  5. wypaul added a post in a topic Avid--VW combo.   

    Wow, Jack that cowl looks nice.  I flew behind a Revmaster  in my Q-2 for a few years and have a few suggestions about them.  The Posa carb works Ok after some setup tweaking and there is some good info about that available on line.  Also there is a mandatory safety mod that adds a setscrew to the needle to keep it from turning in flight.  I think I still have the info in my files if you need that.  It is an easy mod to do but important.  The heads supplied with these 80's model Revmasters were junk and they cracked between the valves.  The good news is that the new heads breathe  better and offer at boost in horsepower.  Most users replace the supplied oil filter with an automotive filter that saves weight and gets rid of the mess of cleaning the Revmaster filter.
     
    I built some cooling ducts that kept the heads cool and also there are some things called "Cool Tins" that fit under the cylinders that help cool them evenly.  Head cooling is a problem with the VW so make sure to use CHT's.
     
    Head bolts must be checked every 25 hours and the valves adjusted also with the oil change.  There have been some accidents caused by loose head bolts on VW based engines.  With the Cooling ducts like the Jabiru  my heads ran cool and the head torq stayed good for the most part.
     
    The oil cooler requires a separate, dedicated opening in the cowl and ductwork to direct the air over the oil cooler, without it the temperature of the oil will redline within minutes.
     
    There is an AD on the magneto impulse coupling that you will want to do also that is easy to do yourself with a file.
     
    There is a video or two of a fellow in S. America I think, that is running a Revmaster in an Avid that is interesting. 
     
    I will send a personal reply to you with my cell phone if you have other questions.
     
    Looks like you are doing a great job with your install.
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  6. coverall added a topic in Technical tasks   

    cog belt?
    where can buy reduction drive cog belt?
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  7. EDMO added a post in a topic Avid--VW combo.   

    Jack,
           Guessing from your photos - this is a direct drive?  These have seemed to perform poorly for STOL planes - A redrive will double your torque and allow you to use a full-size prop - I know they make redrives for the VW, and they add weight, but there are performance benefits too.
    Keep us posted on weights, CG, performance, etc.  Sounds like you got a good "helper" there.
    I wonder what Dean would say about me extending my leading edge 4 inches to balance my Subaru w/redrive?
    And, splitting my flaperons into 6.5 foot 45 degree flaps and 6 foot differential ailerons, each 14 inches wide, using the Steve Wittman tube-in-a-tube control design?
    EDMO
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  8. Logtrucker added a topic in 4-strokes   

    Avid--VW combo.
    I've noticed the VW derived engines are not popular with A--KF. Builders, mainly because of weight and or cooling . But because the price of the favored engine jumped about 40 percent while I was dealing with wings etc. I decided, with Dean Wilson's oversite we would bite the bullet and see if we could make a decent effort using a 2180 Revmaster from an abanded Q2 project. One of the mods we made. Mounted the engine direct to airframe about 2" behind the original firewall, as adding weight is almost the unpardonable to my mentor. Built a carbon fibre cowl. Anyway, a few progress pics. As a first time builder, this forum is great. Also welcome any suggestions . Jack

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  9. Chewie added a post in a topic Update to Deans latest project   

    Is he getting into motorglider territory? Considering the Wilson sailplane banner on the wall.
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  10. sioux201 added a post in a topic Update to Deans latest project   

    Love the monster slid ruler over the window!
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  11. Logtrucker added a post in a topic Update to Deans latest project   

    More info on Dean's project : span 35 ft. Wing area. 122 sq. ft. Strut lift area 23 sq. ft. Length 16 ft. Cabin width 42". Fuel cap. 9gal. Power 1935. 40 horse cont. Dean says this is his personal hobby horse so what few scaps of paper (drawings) there we're have already hit file 13 . Interesting guy to work with! Jack
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  12. Av8r3400 added a post in a topic Update to Deans latest project   

    They don't look like Junkers style flapperons to me.  The wing does not appear to have a trailing edge.  They look like "regular" aileron-flaps.
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  13. Av8r3400 added a post in a topic Insure your packages folks   

    Congrats, Joey.  I'm glad you got it found and sorted out.
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  14. lostman added a post in a topic Update to Deans latest project   

    Those flaperons appear huge! Do you have any details as to what the wing span is?
    It also looks like he's going for most lift off the struts as well. They remind me of struts from a shorts 360!
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  15. lostman added a post in a topic Insure your packages folks   

    Glad you got this sorted out Joey! Seems like someone didn't want to fess up to losing or not shipping the box. At least it turned out well for you.
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  16. 6320012s added a post in a topic Contemplating Frankenstein   

    Thanks for all the info.   I am getting symetrical flaperons and lift/jury struts along with the wings.  Leni, from what you are saying, sounds like my mixer is essentially a KF 4 mod. at least in function.   With any luck I'll have a couple weeks of ski flying yet this year.
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  17. C5Engineer added a post in a topic Insure your packages folks   

    Well I called Ivo on Monday and said go ahead and send me a new set up. They called me today to let me know that my box showed up!! I ran the tracking and it was scanned in from my town on Friday the 17th and made it to Long Beach today. NO idea where my box was from Dec 27th to Jan 17th but I find it ironic that on Thursday I really made a stink at the place I shipped it from and I also called both local post offices since they pick up from that place as well and the box shipped on Friday. Glad Ivo called me and they knocked a chunk off the price because they were able to use my front plate to mount a new motor to. I had the OLD style motor that they don't even make parts for anymore and it was 10+ years old.
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  18. C5Engineer added a topic in Avidfoxflyers General Hangar   

    Update to Deans latest project
    Some of you already know this but I am fortunate enough to have grown up around Dean Wilson and I have family friends who send pics now and again of what he's up to. These pictures came from a guy named Jack (Logtruckdriver) and Dean and him were nice enough to grant permission to post them. I don't know details but hopefully Jack will jump in as I'm sure folks will have questions. What I do know is it based off an A model. It has a really long skinny wing and is powered by a 40hp continental that was on Deans first plane WAY back in the day. Check out those struts and flaperons!
     
     





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  19. sioux201 added a post in a topic Engine mount not on center line   

    Early models ,cyauna,532s,rudder off set, latter rudder off set
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  20. jlpeet added a post in a topic Engine mount not on center line   

    what Chris said
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  21. dholly added a post in a topic Contemplating Frankenstein   

    David -
     
    I just had another thought... there is a KF3 builder a few hours from me that I know used KF4 wings. I believe he finished his plane and flew it for the first time last year. He is a member on the TeamKitfox forums under name 'GT280flyer' if you want to search up his posts or PM him.
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  22. akflyer added a post in a topic Contemplating Frankenstein   

    I know for a fact that it is a one off mixer that John installed under the seat.  He was the first one to make a mixer that had the correct differential in it, but in doing so, you now have to pull the bolts and manually fold the flaperons.  The mixer works well though!  There are a few other one off thnigs on that bird that improved the overall flight characteristics. 
     

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  23. dholly added a post in a topic Wings, metal leading edge or no   

    Small world, eh? Now you guys have an excuse to get out of the house every week 'cause your new building buddy needs a hand, hehe.
     
    BTW, those were the rib tail reinforcements I made for my Avid Mk-IV. At the time, I did not extend the metal through the cap strip onto the interior rib web. Honestly, after seeing just how easy it is to snap a rib tail off, I probably would make the extra effort and do it today. Certainly would make it a much stronger structure overall.
     
    Obviously, the KF4 rib tails and flaperon hangers are completely different. I've attached the Service Bulletin from Denny showing their solution and a pic of my old KF3 showing the root rib with retrofitted reinforcement in place.
     

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  24. dholly added a post in a topic Contemplating Frankenstein   

    Here's an exploded view of the [OEM] KF4 mixer that you might find helpful.
     

     
    [edit] just to be clear, this exploded view shows the oem mixer system
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  25. EDMO added a post in a topic Contemplating Frankenstein   

    There was a change in the flaperon hinges and mounts with the KF4 - You will have to modify in some way if you plan to use your old flaperons.  The modified setup, whatever you do, must match up the control tube to the support in the turtledeck.
    Funny thing tho - When the new wing came out on the 4, the flaperons were changed from flat-bottom to symmetrical, and listed as "new and improved"  - later on, I believe on the KF7, the flaperons were changed back to flat-bottomed, and listed as "new and improved" - Some KF owners were not impressed with the advertising....
    EDMO
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