flywise

Contributing Member
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About flywise

  • Rank
    Advanced Member
  • Birthday 07/04/1970

Contact Methods

  • MSN wieselaurent@hotmail.com
  • Website URL www.skydrone.weebly.com

Profile Information

  • Gender Male
  • Location British columbia/Canada
  • Interests vintage motorcycles

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flywise's Activity

  1. flywise added a post in a topic How to contact a member.   

    You can just click on his name and then directly send a private message from his personal info page.
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  2. flywise added a post in a topic Stringer's required?   

    As I am weight mad myself I can just give you the different items I found I could loose a lot of weight. If I were you, I'd start with the heavy before the lighter stuff..
    Here a few things I got a lot of weight saving (not exhaustive list):
    1. replaced heavy mech altimeter and VSI with electronic altimeter LED display (also shows VSI/OAT)
    2. removed tubes in tires...1.5Lbs saving and easier field repair if punctured / also removed brake rotors for lighter ones/drilled holes
    3.installed lightweight 406 ELTfitted with lithium battery
    4.installed lightweight fibreglass tailwheel spring & light matco wheel with air tire
    5. installed newer lightweight VHF radio / garmin SL-40
    6. installed lightweight shorei li-fe main battery
    7. recovered seat foam with lightweight fabric 
    8. installed light & bright LED anti collision light
    Also if you recover your plane, use Oratex covering...saves time and lots of weight
     
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  3. flywise added a post in a topic rotax 912 edge performance big bore kit failure   

    I agree with you when it comes to the very early rotax 912 ul 80Hp crankshaft wrist pin and rod bushings being weaker than the newer engines. In the accident aircraft however the engine was a 2010 rotax 912 ULS with 230Hrs TT, not an old 80Hp case/crankshaft. Also when I compare the zipper vs edge performance piston, they look very alike with a substantial part of the skirt missing to make them lighter. If I understand the report it seems that the minimizing of the piston skirt induces excessive side loads on the original rotax 912 uls con rods....
    I did modify my old 80Hp 912 to the 912 uls specs but I used 100Hp rotax pistons (full circumferance piston skirts) and cylinders vs the edge  or zipper kit with tiny skirts..
    Maybe a badly synchonized engine for example exacerbates the side loads ......and most guys with the zipper / edge kit with well tuned engines will never have a rod failure...who knows. 
    Also from the report, the aircraft owner who installed the pistons did buy them used (10Hrs TT) from edge performance...who knows the story behind the first 10Hrs???
     
    Below a picture of the zipper big bore piston with tiny skirt

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  4. flywise added a post in a topic Finally brought it home, more photos in the morning.   

    Why did you cut open the wing fabric? Was /is it bad?  If it was to inspect the inside you don't normally open up the wing like that but istead you make access holes from underneath or get one of these 30$ tiny borecope cameras you hook up to your laptop. A pinhole is enough to inspect the inside as these cameras are tiny and include a bright LED light
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  5. flywise added a post in a topic Avid Catalina take off performance   

    I started with a rotax 912 ul 80Hp and now I have upgraded my engine to to the 912 uls specs + special camshaft = 110Hp 912.
    I really believe that performance comes with keeping it light. If your 582 catalina is lighter than my 912 catalina (750 Lbs empty) you can surely match my performance. The only thing I believe is hard to to, is increase speed.....I get my 90Mph cruise speed at 5200rpm (~90Hp / 79%) . When I go lower @ 4900rpm (59Hp) it only drops to 83Mph and full bore is about 100Mph max.....to resume, a lot more HP does not give much more speed......but it does get off the ground/water in a hurry and climbs great.
    I found there are a few things you can do to make it lighter:
    remove the water rudder, replace steel tailwheel spring with fibreglass, install lightweight battery, remove main tire tubes to run tubeless, Install lightweight tailwheel with air in the tire, replace all old mechanical instruments (Alt, Vsi, Vhf, compass, ELT,  etc...) with new lightweight solid state electric instruments, install plastic screws to hold rear windows (lighter and safer as the original steel wood screws can come loose and go through prop. Also allows you to break out rear window if upside down in water).
    If you're crazy enough ( I am getting there) you can install some titanium screws in some locations, choose lighter nuts (all steel stop nuts vs nylocks) and on and on it does.
     
    Hope that helps
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  6. flywise added a post in a topic rotax 912 edge performance big bore kit failure   

    Thank you Avr8r3400 for shedding light, my bad as I thought they had the edge performance kit fitted vs the zipper big bore. Also after some research it seems the big bore kit fitted to the accident aircraft is an old/outdated version. Edge performance have changed the shape of their pistons a few years ago..
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  7. flywise added a post in a topic rotax 912 edge performance big bore kit failure   

    Why not the detailed investigation to help others but without the overregulation....now that would be smart!!
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  8. flywise added a topic in Avid Catalina   

    Avid Catalina take off performance
    Here a little video showcasing the Catalina performance. The runway is 3600ft long and the catalina takes about 150ft. At the end of the runway I am at about 1200ft altitude when taking off at the half runway mark (1800 ft distance travelled).....do you think this is too much fun?
     
     
    avid_takeoff.mp4
    • 4 replies
    • 217 views
  9. flywise added a post in a topic rotax 912 edge performance big bore kit failure   

    It would be good if the FAA or the Canadian TC did an as good job as the Norwegian civil aviation authority.....
    It seems that in the US and Canada if you have an incident (like an engine failure) without any dead people they don't do any meaningful research and don't establish an in depth report for us.....a shame
     
    my 1/2 cent
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  10. flywise added a topic in 4-strokes   

    rotax 912 edge performance big bore kit failure
    Hey Guys,
    just came across this very detailed Norvegian (in english) accident report involving a rotax 912  fitted with the edge performance big bore kit. Among other things, It seems clear that the small piston skirt on the big bore kit is problematic and induces a connecting rod failure on the original 912 connecting rods according to the rotax engineers.
    Also I remembered Trent palmer having a rod failure...even Hall had a rod failure going to Oshkosh .....all running the edge performance kit.
    I have not read anything about this issue and am wondering if I am the only one who did not know about this.
    Let me know your thoughts....
     
    2019-04 LN-DLH eng.pdf
    • 12 replies
    • 253 views
  11. flywise added a post in a topic Dash redo and organize   

  12. flywise added a post in a topic Kitfox 1 questions   

    first Kitfox with retractable landing gear....wow looks gooood
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  13. flywise added a post in a topic Double Ender Honda Style   

    I believe this is designed to use electric propulsion hence the small/tight fit cowl.
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  14. flywise added a post in a topic engine mount engineering   

    How about my engine mount, crazy complex


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  15. flywise added a post in a topic Ground wind to tip   

    On my Catalina I see about 37 Mph stall....which means that at 37 Mph head on steady wind I will land with zero ground speed (cool thing to do), anything above, you're in a bad spot as you will go backwards on touch down. I believe your avid is safe sitting on the ground at any wind velocity below your stall speed. It will produce maximum lift with winds coming head on. When the wind is coming sideways, it will always try to weathervane into the wind. 
    If you tie it down obviously the wind can be higher and you're still safe.
    This is what I think from what I have experienced.....but have been wrong before..
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