Activity Stream

Activity Stream

  1. EDMO added a post in a topic Hello From Canada Mark C Avid Project   

    Willis,  The brakes holding static runup depend on two things:  1.  The size of tires - Larger tires usually require double-puck brakes.  2.  The power and thrust of the engine and prop - 912 engines have more than the 582 engines.  And, I will add - 3. The geometry of the pedal to brake connections makes a huge difference in braking power.  Most guys who have had a problem have modified their master cylinder to pedal link to get a 2.5:1 mechanical leverage, such as Matco describes in one of their posts on their site.  Hope this helps.  EDMO
    • 0
  2. Dutchwillis added a post in a topic Hello From Canada Mark C Avid Project   

    My plane has matco brakes on it already, and after going threw all of the build paper work it looks like they were purchased as an upgrade with the plane kit.
    ( my avid cost $18000 back in 1990 i have the original recielts )
    Are these good brakes? Will i have some good holding capabilities with them?
     
    Sorry about the horrible picture

    • 0
  3. EDMO added a post in a topic Kitfox 3 Bushplane Project.   

    Cant see $1150 plus shipping for electric trim larger elevators - You could modify yours for less than $100 including all parts needed.  EDMO
    • 0
  4. EDMO added a post in a topic Kitfox 5 kit on barnstormers   

    That sounds like a bargain price for a Model 5 Kit.  BTW: The yellow Avid Speedwing on ebay just sold for $9700.  EDMO
    • 0
  5. EDMO added a post in a topic Hello From Canada Mark C Avid Project   

    I think my wood formers were used as kindling wood after they got broken in the fall from the trailer.  I modified the right side for a big baggage compartment and welded in the front part of the former in the process.  I totally forgot about the former on the left side and on the bottom until after blasting and painting, but I will figure something out.  
    I scratch-built my cabin widening too, as well as about 99% of the rest of the plane - TWICE! 
    I cant see paying $1150 plus shipping for larger elevators with electric trim, when you can modify yours for probably less than about $50, or at least under $100 in parts and tubing!
    BTW:  Jim,  my Cabelos boat seats are 16" wide, so that two of them fit inside the 32" wide cockpit bottom - my butt has to fit in that space!  ;<)  EDMO
    • 0
  6. 1avidflyer added a topic in For Sale and wanted, you got it, I want it   

    Kitfox 5 kit on barnstormers
    Just saw this, looks like a reasonable price.  I would guess a new Kitfox kit is $20,000 or so.  JImChuk
    KITFOX MODEL 5 KIT • $8,750 • AVAILABLE FOR SALE • Kit S/N S9412-0078, includes the firewall aft kits; fuselage kit, wing kit, landing gear kit, covering kit and builders manual. It has a tailwheel and both the bungee and Grove main gear. speedster tail, wing lift strut fairings, builder's tool kit, wingtips and wheel pants. Here is what we know isn't included in the kit: Firewall forward kit, cowling or prop you get to choose your engine & prop Upholstery and seats Baggage sack Almost all of the current options for the SS7 can be done on the model 5, except to convert it to a nose wheel. Hardly any work done on the kit. • Contact Gerald W. Dafoe, Friend of Owner - located Morristown, AZ USA • Telephone: 810-516-9122 . • Posted March 27, 2017 • Show all Ads posted by this Advertiser • Recommend This Ad to a Friend • Email Advertiser • Save to Watchlist • Report This Ad • View Larger Pictures

     
    • 1 reply
    • 13 views
  7. 1avidflyer added a post in a topic Hello From Canada Mark C Avid Project   

    Hey Doug, not sure if you meant me in your last post, but if you did, this is an Avid MK IV I'm showing.  I scratched built the fuselage widening myself.   If you look at the bare fuselage pics I posted above, you will see that Avid doesn't use standoffs like Kitfox, the 1/2" side former is welded right to the side of the fuselage.  My door widening tubing angeled back to the side former and is welded to it.  I would have gone further back, but that's where I run into the baggage compartment door.  I agree with your comment to Ed that he could maybe just move the wood former out to meet the fuselage widening tubing. 
    DutchWillis,  I haven't gotten to attaching/fitting the doors yet.  JImChuk
    • 0
  8. TJay added a post in a topic Kitfox 3 Bushplane Project.   

    .035 4130
    • 0
  9. LSaupe added a post in a topic Kitfox 3 Bushplane Project.   

    Those ratefaced bastards!
    • 0
  10. Neloner added a post in a topic Kitfox 3 Bushplane Project.   

    Spent the day working on this thing. Cringed as I stabbed through the fuselage fabric, but got it all pulled off except the top of the tail. Powerwashed the entire airframe after I removed it all, and the hot water powerwasher removed the bits and pieces left on the tubing. Dried it out and put it back in the barn so I could yank the engine. Tomorrow Ill peel the tailfeathers and top of the tail as well as the landing gear.
    The next order order of business is getting prepped for welding, going to have the wide body kit welded on, and reinforcements around the landing gear attach points and seat truss. Any tips as to the thickness and type of material to use for this? Chromoly sheet? And any pics of strategic placement of gusseting would be helpful as well, want to add some but not too much weight. 
    -still getting quotes on coverings, although almost sure Im going to use stewarts
    -Extended tailfeathers and trim are out, Kitfox quoted me 1150 for that kit, not including shipping which would be substantial. 
    -Pretty much decided I want a 100hp timed out rotax for this now, just for ease of install



    • 0
  11. RobS added a post in a topic RX1 Motor Mount   

    Found this picture on Facebook which helps to explain the large diameter tube.
     

    • 0
  12. dholly added a post in a topic RX1 Motor Mount   

    Why such large dia. tubing?
    • 0
  13. Dutchwillis added a post in a topic Hello From Canada Mark C Avid Project   

    Did you have to mess with the doors are lot to get them to sit right? Or are you not quite there yet.  
    after seeing this it's now on my must have list.  I plan on doing a ton of flying with friends and the extra room will make it so much more enjoyable 
    • 0
  14. dholly added a post in a topic Hello From Canada Mark C Avid Project   

    @Jim- I thought Murle's pre-cut Kit pieces were for a KF4. Did you mention you were adding to a model 3? Not sure his cost but we probably could have fabbed something up on our own with some 1/2" tubing easy enough.
    @Ed- Jim added a separate piece of tubing from the new door framework that angles back to the original metal side stringer, which means lengthening the Avid standoff is unnecessary. This is where the Avid design differs from the KF with its wooden side stringer, can't weld that piece to a wooden stringer! Looking at pics of my old KF3, the lift strut when folded is fairly close to the fuse below the center side stringer, not so much above. Plus the KF standoff is located pretty close on the fuselage to where Jim tapered his new stringer tube to end, so I doubt clearance would be an issue. So why not just utilize the existing wooden KF side stringer without detaching from the standoff (basically just loosen the end from where it meets the original door frame and re-terminate it at the new door frame's rear "V" (or maybe ">" would be more accurate)? Obviously it would result in a more concave fuselage side profile directly behind the doors vs. Jim's but, as mentioned, one could always lengthen the first KF standoff slightly if preferred aesthetically. 
    • 0
  15. dholly added a post in a topic Yamaha RX1 Engines   

    Those that do not use Facebook would appreciate the info being added here. Thanks
    • 0
  16. EDMO added a post in a topic Hello From Canada Mark C Avid Project   

    Doug,  as you can see in the photos of Jim Chuk's widened fuselage, the first standoff was not lengthened.  My only concern about lengthening the first standoff is that the stringer might interfere with the struts when folding the wings.  I would just bend the new stringer a little if needed to match the old standoff.  I haven't checked all of this to see if it would matter.  Thanks for the opinion.  EDMO
    • 0
  17. Av8r3400 added a post in a topic Noise Abatement & Cabin Noise Reduction   

    The 670 (not my favorite engine - story for another time) is a different cat altogether.  Because of the (usually malfunctioning) exhaust valves it requires a much more tuned pipe to work properly (when it works at all - did I say that?).  Without the tuned pipe, you leave all sorts of HP on the table.
    When I say two stroke engines, I mean real, reliable, aircraft engines like the 582 or the venerable, lovable, near indestructible 503.
    • 0
  18. Dusty added a post in a topic Kitfox 3 Bushplane Project.   

    Mine have been repaired with wooden doublers due to a flapperon contacting the ground when one of our airforce pilots was "demonstrating" it.
    • 0
  19. EDMO added a post in a topic Kitfox 3 Bushplane Project.   

    Although the rib tails were judged by Avid and Kitfox to be strong enough, when the kits were evaluated in the UK the British authorities demanded that the extra braces be put on each side of the tails to meet their (like FAA part 23) standards.  Numerous rib tails have been broken, mostly in accidents/incidents here in the U.S., so some reinforcement before covering is considered a good mod, but not mandatory here.   EDMO
    • 0
  20. Fly-n-Low added a post in a topic Kitfox 3 Bushplane Project.   

    What is the reason to do this? As long as the wood is good? The only fatality I have read about was when the wood rotted out causing a control surface failure.
     
    • 0
  21. nlappos added a post in a topic Noise Abatement & Cabin Noise Reduction   

    Gotta take care with Rotax 2 stroke mufflers. The muffler is a tuned part of the exhaust system, and can cause problems where EGT goes sky high if the standing wave frequency mis-tunes with the piston stroke, since the low pressure phase of that standing wave helps exhaust the cylinder. Severe power loss and possible egt problems can be experienced if the muffler system isn't close to the factory one. There are some sites on the web that discuss it a bit more.
    • 2
  22. Neloner added a post in a topic Kitfox 3 Bushplane Project.   

    Ok cool, just put an order in with Murle Williams :)
    • 0
  23. JimD added a post in a topic Noise Abatement & Cabin Noise Reduction   

    Wow, fast response.

    Good to know about the standard muffler.  I'm planning on purchasing a Kitfox with a 670 and am trying to evaluate the best options.  My family owns a place out in the country, and although taking off is around family and they won't complain, I don't want to abuse their hospitality either.
    Additionally, I'm planing on doing some operations on ultralight fields, and one in particular is near a neighborhood.

    I'm just looking for loads of suggestions to pick and choose from, and I provided what little I have found out so far.
     
    • 0
  24. dholly added a post in a topic Hello From Canada Mark C Avid Project   

    @Ed - I think the aluminum side stringer would wok ok, maybe add a standoff or two if you're worried about it oil canning under fabric tightening. It also seems to me on the KF 1-3, that the wood stringer might simply be loosened at the door frame, then re glued to the new wider frame. Ie, the first standoff is far enough aft that it might not really need to be extended. Maybe Tjay can verify.
    • 0
  25. JimD added a post in a topic Noise Abatement & Cabin Noise Reduction   

    Quieter Propellers:  
    Paddle style propellers seem to be quieter in-general

    Off the Shelf: 
    The Felix bi-camber propeller: http://a.moirier.free.fr/H%E9lice/Construction/The%20Felix%20propeller.pdf
    excerpt: Fred Felix at W-10508 Bell Rd., Camp Douglas, WI 54618, 608/427-6544 or l-800/PROPELR

    NASA Stinson & Cub Testing: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19960008053.pdf
     
    • 0