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  1. #1

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    Thunder Tiger 120 Pro RPM numbers

    I run this engine with a APC 16x6 and a Bisson pitts muffler and get 9700 with 10% PowerMaster. Anyone else ?

  2. #2
    Riverdancer's Avatar
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    RE: Thunder Tiger 120 Pro RPM numbers

    Good Day Gungadin,

    The best prop I found running this engine was a 16 x 8 APC 10% fuel and turning 9400 peaked and about 88-89 to fly. This worked very well.. I would go with the APC 17 x 6 (At the time they were not out yet.) I would say a 16 x 6 is a bit light for this one..

    Hope that helps.. alot of people don't like the TT engines.. I flew 250-300 flight with one I had and sold it and the fellow that bought it put another 200 plus flights on it.. He has since changed the bearings and reringed it.. and it's running strong again..

    All the best

    Riverdancer

  3. #3

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    RE: Thunder Tiger 120 Pro RPM numbers

    Riverdancer---I hear what you are saying about some people not liking Tunder Tigers. Some years ago I ran their 46 and 60 quite a lot and liked them both. This 120 has over 12 gal. of fuel thru it now and I am very pleased with it's performance. I tried a 17x6 apc also and my airplane prefers the 16x6. I set it for 9200-9300 on the ground which is 3 or 4 hundred off of max rpm and it gives me great vertical on my little IMAC airplane. Also gives me 1600 rpm idle very consistently. Can't beat that with a stick !!!

  4. #4
    Riverdancer's Avatar
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    RE: Thunder Tiger 120 Pro RPM numbers

    Hey there Gungadin..

    Sorry I didn't reply sooner.. I usually check the notify box, must have missed it.

    Glad to hear it works well for you.. I had great success with the one I had. You are probably right about a 16 x 6 being good for IMAC.. I was pretty limited at what I would do when I ran that engine.. I suspect you have a nice constant pull with that prop.

    What level of IMAC do you fly..?

    All the best.

    Riverdancer

  5. #5

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    RE: Thunder Tiger 120 Pro RPM numbers

    Riverdancer--I'm new this year in IMAC and flying Basic. Made it to 4 contests so far this year and it never fails that someone comes over after I fly a round and asks me what kind of engine I have in my plane. Most guess it is an OS 160. It does a nice job on the vertical up lines.

  6. #6
    Riverdancer's Avatar
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    RE: Thunder Tiger 120 Pro RPM numbers

    Hello Gungadin..

    Very nice.. Glad to hear you re getting into IMAC I have a contest this week end.. I an starting in Sportsman, This will be my first official contest. We will see how it goes.

    All the best and good luck.

    Riverdancer


  7. #7

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    RE: Thunder Tiger 120 Pro RPM numbers

    9300RPM peaked
    10% nitro
    14x12 APC
    80 deg F
    70% humidity

  8. #8

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    RE: Thunder Tiger 120 Pro RPM numbers

    Happy--What kind of muffler are you running ?

  9. #9

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    RE: Thunder Tiger 120 Pro RPM numbers

    Running the production muffler. New prop and fuel now though.
    Prop - 13x13APC
    Fuel - 15% Cool Power
    Temp - 72F
    Sea level
    9560RPM

  10. #10

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    RE: Thunder Tiger 120 Pro RPM numbers

    TT120 RP on 5% nitro
    16*8 APC prop
    home made pipe
    9700-9800 rpm depending on weather conditions (prefers colder air)


  11. #11
    cap10b's Avatar
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    RE: Thunder Tiger 120 Pro RPM numbers

    All,
    TT 120 Pro side exhaust
    93 degree
    Hum - Dry
    10% Ritches Brew 11-11 (22% Oil)
    APC 16x7
    Versane (Perry) Regulated pump
    9300 (Fat)
    2100 idle with smooth and quick transition
    Hovers a WH Baby Edge 540 9.75 lbs at 1/2 throttle
    Bisson Side Pitts muffler
    179-180 Head Temp
    Merlin Long Glow plug

    Starts easy one bump backwards and she is running
    jds
    I ran out of Altitude, Airspeed and Ideas !

  12. #12
    tIANci's Avatar
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    RE: Thunder Tiger 120 Pro RPM numbers

    TT 120 Pro side exhaust
    87 degree
    Hum - high
    5% Cool Power synthetic
    APC 16x6
    OS No. 8

    Peak at 10,500 RPM

    Just prime her, she will start with a back flip of the prop!
    Its nice to be important, but its more important to be nice ...
    Revver Brotherhood No. 232

  13. #13

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    RE: Thunder Tiger 120 Pro RPM numbers

    10,500 rpm on a apc 16x6 sounds high. What muffler ?

  14. #14

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    RE: Thunder Tiger 120 Pro RPM numbers

    Hi Can anyone recommend me a place to buy spares for these engines? thanks!


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