marksires

Administrators
 View profile  See their activity

  • Content count

    927

  • Joined

  • Last visited


Everything posted by marksires



  1. marksires added a post in a topic Trump   

    I saw something similar.
    For the first time in history, a white billionaire replaces a black family in public housing.....
    • 4


  2. marksires added a post in a topic Foot Pedals   

    Something like Bandit did in this thread would work without changing the cylinders, scroll down until you see the picture in Bandit's post.

     
     
    • 0


  3. marksires added a post in a topic Foot Cramps   

    If I trusted my welding skills, I could have made a linkage to attached to the existing MC5 cylinders.  I think the pedals Ed mentioned have a linkage that does just that, so I'd probably spend the money on the pedals rather than on new cylinders (and have to bleed those blankety blankety blankety things again!)
    Mark
     
    • 0


  4. marksires added a post in a topic Foot Cramps   

    I have a welder, but I didn't trust my weak welding skills for anything very stressed.  I designed the new pedals so all the force not directed through any welds.  The left pedal is more dependent on the welds, since I had to put the attach point in the middle of the pedal, the weld has to keep that attach point from folding over.
    I cut them out of flat 4130 plate, then bent them into shape and welded the two straps at the front so my foot didn't get stuck.  It took me three designs before I had one that was simple, light, and not dependent on a weld carrying the load in tension.
    Mark
     
    • 0


  5. marksires added a post in a topic Foot Cramps   

    Here is the before and after pictures of my pedals with some crudely drawn notes, it might make it more clear.
     


    • 0


  6. marksires added a post in a topic Foot Cramps   



  7. marksires added a post in a topic Working on your eab plane - signoff requirements   

    The special airworthiness certificate is a standard document, the operating limitations are a separate document, but the special airworthiness certificate references the operating limitations.  As Joey said, some of them are very long, and there isn't room on the special airworthiness certificate for all the verbage.
    Mark
     
    • 2


  8. marksires added a post in a topic MOFOCO vw engine questions   

    Nice!
     
    • 0


  9. marksires added a post in a topic Working on your eab plane - signoff requirements   

    You are right Ed, thanks for the corrections!
    • 0


  10. marksires added a post in a topic Kitfox 1 build   

    Dang, with those temperatures you'll probably stay North this winter!
    • 0


  11. marksires added a post in a topic Working on your eab plane - signoff requirements   

    It is correct - the only time and A&P has to be involved is the annual condition inspection if you don't hold the repairman certificate.  Note that it does not have to be an IA, only an A&P is required to perform the condition inspection of an amateur built experimental aircraft.
    Also note that you must pay attention to your operating limitations issued with the airworthiness certificate.  Overhauling the engine isn't a big deal, but if you change the engine to a different kind, or change the propeller, or modify the control surfaces (basically anything that is likely to change the flight characteristics), your operating limits probably require you to to go back to phase 2 testing for 5 hours.  You don't have to notify the FSDO, but you need to log the switch to phase 2 testing, log the completion of the 5 hours and return to normal operations.
    That's one of the reason you have the big EXPERIMENTAL placard where passengers can see it.
    Mark
     
    • 1


  12. marksires added a post in a topic Foot Cramps   

    I tried the 'intensifier kit' you are talking about Ed.  It probably made some difference, but it wasn't significant.  Not worth the time or $$.  Fix the pedals so the geometry is right, or at least close.
    Mark
     
    • 1


  13. marksires added a post in a topic Foot Cramps   

    Your pedal geometry is probably wrong.  If the cylinder attaches to the top of the pedal, you actually lose mechanical advantage as you apply the brakes.  You start out with about a 1 to 1 mechanical, and it drops to .7 to 1 as you push on them.  Matco recommends a 2.5 to 1 mechanical advantage.  I redesigned my pedals to get this, and I went from not being able to hold the plane at 3000rpm (a little tough to do a runup), to no problems at 5500rpm.  Attached is a picture of what they look like after redesign.  I had to switch from the Matco cylinders with the internal reservoirs (5C?) to the shortest ones they make (4G or 4H) with an external reservoir to make them work.

    • 0


  14. marksires added a post in a topic Hope this wasn't from yours Joey!   

    Absolutely keep yourself in the clear.  I'm not even that nosy about what happened - it was training, and in training, sh*t happens, that's why you train.  Much worse if it happens in theater with the pointy end folks suddenly in a trouble because their aircraft are out of fuel!
     
    • 0


  15. marksires added a topic in Hangar Talk   

    Hope this wasn't from yours Joey!

    • 3 replies
    • 903 views


  16. marksires added a post in a topic NASA Dumb stunt   

    Apparently they 'forgot' to turn on the power management system that should prevent this.  They also didn't have a clue how to put out the fire once it started.  Would make me really happy to be the first 'test pilot' on the new Orion launch system!
    Maybe this is the same group that mixed up English and Metric on that Mars Lander a few years ago and cratered it in (or as I like to call it, Landing with Authority).
    Mark
    • 2


  17. marksires added a topic in Close Call's and dumb stunts   

    NASA Dumb stunt
    Lithium batteries can be mistreated even by really smart people with large budgets:
    https://www.engadget.com/2016/10/28/lithium-battery-failure-wipes-out-darpa-robot-at-nasa/
     
    Mark
     
    • 5 replies
    • 1,334 views


  18. marksires added a post in a topic I did it again, this time it's a Pietenpol   

    I've been to that chapter once - the Cozy Girrrls were giving a lo-vac composite demonstration I wanted to see.  Nice field, and nice folks!
    Mark
     
    • 0


  19. marksires added a post in a topic I did it again, this time it's a Pietenpol   

    I knew that information, I threw the Wiki link in so you could read about it.  But,  I only knew that because I used to eat at a 94th Aero Squadron restaurant a lot.  They are all gone now, but they were great restaurants at reasonably large airports and always had a view of an active runway.  The decor was all WWI operations shack themed.   When we lived in St. Petersburg FL, there was one at KPIE, loved that place.  There was one at KSTL also, but it closed before I could try it.
    Mark
     
    • 1


  20. marksires added a post in a topic I did it again, this time it's a Pietenpol   

    'Hat in the ring' squadron - 94th Aero squadron from WWI - Eddie Rickenbachers squadron.
     
    https://en.wikipedia.org/wiki/94th_Aero_Squadron
    • 2


  21. marksires added a post in a topic Got my MGL E1 today   

    The fall of the British pound after the Brexit vote probably helped some.
    Mark
     
    • 0


  22. marksires added a post in a topic 4 mph groundspeed   

    I've seen a banner tower 'hovering' over St. Petersburg Florida in a Super Cub.  Was pretty cool to watch.
    • 0


  23. marksires added a post in a topic Kitfox 1 build   

    Thanks for the tip! Order some today.
    Mark
     
    • 1


  24. marksires added a post in a topic Bally's Bomber   

    Here's a link to the picture page for the engine installations:
    http://www.theballybomber.com/2010-2012.html
     
    • 0


  25. marksires added a post in a topic Bally's Bomber   

    I think they are Hirth 4 cylinder engines, but can't find the place I saw it.
    Mark
     
    • 0