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Type: Posts; User: MTK

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  1. Replies
    23
    Views
    477

    I've got one of these and I also put in a Bowman...

    I've got one of these and I also put in a Bowman ring at the start. Mine is piped so it isn't a fair comparison to a plain muffler. It's a good little engine turning a Xoar 19x10 lam at 7200 at full...
  2. Replies
    610
    Views
    76,928

    Ray, My favorite airfoils for Pattern planes...

    Ray,

    My favorite airfoils for Pattern planes are NACA 0010, 0011 and 0012 (10-12% thickness) root and tip. Use the same planform as the original wing. You might want to use 12% at the root and 11%...
  3. Replies
    1
    Views
    104

    I use a Mejlik 20x12 carbon 3 bladder on a piped...

    I use a Mejlik 20x12 carbon 3 bladder on a piped DLE55. The DLE also turns a 23x12 2 bladder very well. I think a 20x12 3 bladder would be too much prop for a 45 on muffler

    A better 3 bladder for...
  4. Replies
    69
    Views
    2,909

    You might consider a couple things to quiet down...

    You might consider a couple things to quiet down the large gassers....These will cost some dollars so be forewarned:
    First, a soft rubber isolation mount.
    Second, a tuned exhaust that is also soft...
  5. I've tried several ways to make the release...

    I've tried several ways to make the release simple and effective but have not been happy with the results. I like Bob's method though especially if you're gonna make bunches of them...

    I've...
  6. Replies
    24
    Views
    7,157

    How about a piped DLE55 lite on an EF Extra 78"...

    How about a piped DLE55 lite on an EF Extra 78" electric model? It weighed 12 1/2 lbs all up RTF with about 35 lbs of thrust. Outrageous combo.

    The piped DLE was set-up with a Mejzlik 20x12...
  7. Replies
    446
    Views
    64,177

    Sticky: We will have some interesting stuff to discuss...

    We will have some interesting stuff to discuss soon in regard to powerplants (non electric). Looking forward to new developments and comparisons.
  8. Thread: Sickle Rebuild

    by MTK
    Replies
    11
    Views
    664

    I came up with the idea to apply it to model...

    I came up with the idea to apply it to model construction many years ago. It is a good set-up for some things but is somewhat limited; not as good as a full vacuum, controllable set up as Claude...
  9. The nice thing about the PVC foam is that it is...

    The nice thing about the PVC foam is that it is shapable with a heat gun and some ingenuity. I've done this many times in the past.

    But for my money, the simplest thing to do smaller repairs with...
  10. Replies
    50
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    2,828

    When I was much more active with Judging matters,...

    When I was much more active with Judging matters, this was always on top of my list. Judging, just like flying, must be practiced. Unfortunately there is usually only so much Judging practice...
  11. Replies
    610
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    76,928

    OTOH, why not build a foam wing for the model and...

    OTOH, why not build a foam wing for the model and toss the balsa wing? Yeah, it will set you back some green backs but will greatly reduce the possibility for a failed wing. Chances are good that the...
  12. Thread: "experts"

    by MTK
    Replies
    157
    Views
    5,075

    Geesh.... I worked with a guy long ago that used...

    Geesh.... I worked with a guy long ago that used to say this all the time about people's expertise. It was a dumb comment then and still is.

    To the OP, I think you've got your answer.
  13. Replies
    20
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    587

    A heads up for those of you that want to use...

    A heads up for those of you that want to use polyester and MEKP catalyst. MEKP, methyl ethyl ketone peroxide, can be dangerous to the eyes. If you spritz the stuff into your eyes get then flushed...
  14. Thread: YS Header

    by MTK
    Replies
    43
    Views
    1,755

    Hi Scott, On my gas engines' exhausts I use...

    Hi Scott,

    On my gas engines' exhausts I use Loctite Ultra Copper high temp gasket maker. It has worked very well. But I don't know if it would work on the YS. Similar exhaust temps between the two...
  15. Replies
    147
    Views
    8,216

    Ivan was also one heck of a guy. Was always...

    Ivan was also one heck of a guy. Was always friendly and helpful. Back in the day, say around 90 or 91, Ivan would regularly travel down to Jacksonville Fla to fly our local contest. Got to chat with...
  16. Shawn, the single nut prop set-ups for up to a 40...

    Shawn, the single nut prop set-ups for up to a 40 cc work fine. I agree tho that larger than around 50 cc single bolts could be problematic. I am not high on single nut prop adapters either....they...
  17. Replies
    31
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    1,053

    The P51 has been a favorite for a long time. And...

    The P51 has been a favorite for a long time. And this version appears nicer than many

    The wing loading is a bit high tho. Take offs are not going to be too bad. Just need more speed than normal....
  18. Replies
    14
    Views
    445

    With adequate sanding the sheen will come off...

    With adequate sanding the sheen will come off without removing too much balsa and strength. Epoxy will probably stick okay but I don't know for sure. I only used balsarite once 30 years ago (and...
  19. Thread: New DLE 35

    by MTK
    Replies
    392
    Views
    48,963

    At first glance, it sounds to me that you may be...

    At first glance, it sounds to me that you may be flooding the engine. My 35 is the simplest starter of all my engines, with 1-2 flip starts every time. However, I first made certain that the reeds...
  20. Replies
    10
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    569

    Looks like hydrogen embrittlement. If I recall...

    Looks like hydrogen embrittlement. If I recall someone else had the same thing happen to his 55 several years back. Haven't heard of any more issues with this specific defect until now. If I were to...
  21. Thread: Venus II

    by MTK
    Replies
    1,847
    Views
    207,281

    Risking a thread highjack......Sorry Russ, I...

    Risking a thread highjack......Sorry Russ, I can't make a recommendation. I have never run the 33 on muffler, only pipe. But I believe a 19x10 would be ok. You should get around 6600-6800 rpm. I...
  22. Replies
    147
    Views
    8,216

    Rusty, Last photo....a really serious flying...

    Rusty,

    Last photo....a really serious flying site. Nothing here in the NE that I've experienced, compares.
  23. Replies
    147
    Views
    8,216

    That looks like the dynamix carb on the Webra...

    That looks like the dynamix carb on the Webra Race rear. A very interesting carb....

    Just curious Dave, why use the 11x7 on any of these? Most of these engines work truly great on higher load and...
  24. Thread: Venus II

    by MTK
    Replies
    1,847
    Views
    207,281

    The un-piped 33 will give that model all it needs...

    The un-piped 33 will give that model all it needs and more.

    The piped 33 pulls like a freight train on any length vertical of models weighing as much as 14 pounds/1200 squares in 90-95 degree...
  25. Thread: Venus II

    by MTK
    Replies
    1,847
    Views
    207,281

    OS GT33 on an 8 pound model with maybe 850...

    OS GT33 on an 8 pound model with maybe 850 squares?? Man you really want to blow off the competition. The 20 / 22cc is more than enough ooomph. BUT if way overpower is your thing, go 4 it. On the...
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