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Type: Posts; User: Pelle Gris

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  1. I have been looking at the 85 FSI for a future...

    I have been looking at the 85 FSI for a future project, but have concluded, based on the reports I have found, that it develops about the same power as a good G-62.
    It would seem that both Kolm and...
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    What he said (post above that is). I run a 2S...

    What he said (post above that is).
    I run a 2S A123 pack into the Sparkswitch which then feeds both ignition and fuel pump. That way I can turn on/off both items from the TX.

    I bought mine from...
  3. From the data I have been able to find it seems...

    From the data I have been able to find it seems as if the ROTO puts out about the same power as a G-62 more or less. Although with a slightly larger prop but at lower rpm.
    So my guess is, that you...
  4. I normally use Fiala props Made in the Chech...

    I normally use Fiala props
    Made in the Chech Republic and very good quality. They load the engine very little compared to most other wood props and you are therefore able to use a larger prop than...
  5. If I were you I would focus more on the silencer...

    If I were you I would focus more on the silencer and prop and keep the engine stock. You need the horsepower for a towplane.
    My guess is that your engine delivers max power at rather high rpm, so I...
  6. Hi Jim. The King 140 is a German design, used...

    Hi Jim.

    The King 140 is a German design, used frequently for towplanes due to it΄s ability to swing large propellers at low rpm without issues. I am sure that most other engines in the same...
  7. View Post

    The airfoil I΄m using is the one from the SDD Greenley plan. The chord is made a little shorter though as an aid to transport. 18% thick.

    The original plans showed the wing with dihedral but as I...
  8. Hi Jim. Sorry for the confusion. Apparently my...

    Hi Jim.

    Sorry for the confusion. Apparently my "n΄t" keys are non functional...:-)
    What I meant to write was DO NOT build too light. A slightly heavy towplane does a bit better in adverse weather...
  9. I meant to attach a drawing of the airfoil too,...

    I meant to attach a drawing of the airfoil too, but apparently it failed. So here it is.
    CG is placed at 29-30% chord and both engine, wing and tailplane is set at 0° incidence.

    2124613
  10. View Post

    I΄d recommend a sturdy boxlike structure around 100" span. Straight wing, fully symmetrical airfoil around 15-18% and large flaps if you have a short runway.
    Also do build too light! In my...
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    I used to own a Hostetler Tripacer. It weighed...

    I used to own a Hostetler Tripacer. It weighed about 37 lbs and was powered perfectly by a G-62 with stock exhaust. I was running a slightly cut down 26x8 Fiala prop, making it more or less a 25x8....
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    I own a Balsa USA 1:3 scale Super Cub. It weighs...

    I own a Balsa USA 1:3 scale Super Cub. It weighs in at 46 lbs and is powered by a GT-80 running a Fiala 26x10 prop. This engine is only a little stronger than a G-62 with a good canister, and...
  13. Thread: King 140RV

    by Pelle Gris
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    435

    King 140RV

    King 140RV, 136cc rorary valve boxer.
    Exhaust: KS 90-5 canisters.

    Fiala 30x16 2-blade: 5100 rpm
    3W 32x12 2-blade: 5000 rpm

    The 3W provided poor performance. Lots of noise but low speed....
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    In my experience the G-62 starts very easlily...

    In my experience the G-62 starts very easlily when using the right technique.
    I mount the prop so that it rests against compression at 11 o΄clock and start the swing at around 2-3 o΄clock, and make...
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    With a light weight, or low diameter, prop, you...

    With a light weight, or low diameter, prop, you may have problems getting the idle really low, especially with the stock mag ignition. But with EI you should be able to get a nice low reliable idle...
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    The engine should run the same, powerwise, with...

    The engine should run the same, powerwise, with both IE and magneto, at least my G-62 does. Also, starting the stock magneto engine is quite easy when you learn the right technique. But not all can...
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    New time Moki owner here. I have been adviced...

    New time Moki owner here.

    I have been adviced to keep the rpm΄s way down to avoid overspeeding the engine in the air, something like 3400-3600 full throttle on the ground. I΄m planning on using a...
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    Det er jeg klar over, at du gerne vil bygge den...

    Det er jeg klar over, at du gerne vil bygge den selv, men hvis du har nogle spψrgsmεl til flyveegenskaberne osv. kan du bare spψrge. :-)
    Konverteringen til en L-18 burde vζre mulig med lidt snilde.
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    Jeg har en Balsa USA 1:3 Super Cub, og du er...

    Jeg har en Balsa USA 1:3 Super Cub, og du er velkommen til, at kontakte mig hvis du vil hψre yderligere om den.
    Email: pelle_gris(at)hotmail.com
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    Thanks guys. You have confirmed my own gut...

    Thanks guys. You have confirmed my own gut feeling, and I΄ll do the final tuning when the engine is installed in the model.
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    Tuning Moki 250

    Hello gents.

    I have done a few test runs of my new used Moki 250 on the bench, and I΄m trying to get the needles dialed in correctly. It seems to run very nicely at it΄s current setting, but I am...
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    I run my pump and ignition via a Powerbox...

    I run my pump and ignition via a Powerbox Sparkswitch. This regulates the voltage from the 6,6V A123 pack down to 5,5V,as more may hurt the ignition, and controls the ignition/pump via a switch on...
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    A little more info here although only in german....

    A little more info here although only in german. So you may have to run the website through an online translator.
    http://www.as-scaleparts.de/index.html
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    What ROTO is it? The 85cc twin or the 170 quad?...

    What ROTO is it? The 85cc twin or the 170 quad?
    A friend of mine had the 85cc installed in an aerobat and he had some problems with the fuel supply, as the engine would quit from fuel starvation...
  25. View Post

    The 1:3 scale Yak 50 I΄m currently building.
    Own design, span 311 cm (122,4 in) completely covered with lithoplate and powered by a Moki 250.

    Originally it was to be powered by a geared 124 cc...
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