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  1. #1
    seanychen's Avatar
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    Saito 100 Tach Readings: Please Post

    On 10% Nitro Sig fuel, OS #F plug, I get the following:

    APC 15x6 @ 9500
    Zinger Pro 15x6 @ 9200

    Anybody has the tach number for Zinger 16x5 prop?
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  2. #2

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    Saito 100 Tach Readings: Please Post

    Saito 100

    APC 15x6
    Wildcat 15% nitro/18% all synthetic oil fuel
    O.S. Type "F" glow plug

    Peak RPM's 9,800

  3. #3
    seanychen's Avatar
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    Saito 100 Tach Readings: Please Post

    Looks like I gotta use 15% nitro. Hopefully after running a few gallons, its power will reach 9800 on APC 15x6
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  4. #4
    mecam's Avatar
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    Saito 100 Tach Readings: Please Post

    Saito 100
    20/20 YS fuel
    APC 16x4W
    9800 RPM

  5. #5
    seanychen's Avatar
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    Saito 100 Tach Readings: Please Post

    mecam,

    How was the throttle response with the 16x4W on Saito 100? Was it pretty laggy? I tried the 16x4W on Saito when it was fairly new, running on 10% nitro fuel. The spool up was really slow, and would not hold a reliable idle. Would 20% nitro make substantial difference?
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  6. #6
    rslstft's Avatar
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    Saito 100 Tach Readings: Please Post

    Saito 100
    Home brew 30% Nitro/18% Oil
    APC 14/6 (Will hover Ultra Stick little less than half throttle)
    10,300 Max / Fly at 9,900-10,000
    Russ

  7. #7
    mecam's Avatar
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    Saito 100 Tach Readings: Please Post

    Originally posted by seanychen
    mecam,

    How was the throttle response with the 16x4W on Saito 100? Was it pretty laggy? I tried the 16x4W on Saito when it was fairly new, running on 10% nitro fuel. The spool up was really slow, and would not hold a reliable idle. Would 20% nitro make substantial difference?
    No lag at all, well nothing that I can notice. I haven't tried a 10% nor 15% so I can't compare it. I used the same prop on a Sai91 and that had a spool lag.

  8. #8
    seanychen's Avatar
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    Saito 100 Tach Readings: Please Post

    Originally posted by mecam


    No lag at all, well nothing that I can notice. I haven't tried a 10% nor 15% so I can't compare it. I used the same prop on a Sai91 and that had a spool lag.
    Maybe I should go to the YS 20/20 fuel, or even higher, like the 30% heli fuel. What brand of fuel do you use, Mecam?8
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  9. #9
    mecam's Avatar
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    Saito 100 Tach Readings: Please Post

    Originally posted by seanychen
    What brand of fuel do you use, Mecam?8
    I use a Powermaster 20/20, I think a 30% might be too much.

  10. #10

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    Saito 100 Tach Readings: Please Post

    In reference to 30% nitro heli fuel for the Saito 100, this is ok. Morgan Cool Power Heli 30% nitro/ 22% synth oil. Check out Horizon Hobbies web site about the Saito engines, they even recommend it, as long as you have good oil %. Personally, I use 20/20, a buddy uses 30% in his Saito 91, and it runs very good!

    This is a direct quote from Horizon's web site:
    "Notice that we achieved significant increases in performance (300 to 400 rpm) when using 30% Cool Power helicopter fuel in the Saito but saw minimal increases in the O.S. with the high nitro fuel. Our staff commonly uses 30% heli fuel in Saito engines, as it not only gives better top-end performance but it runs smoother, gives a better transition, and runs cooler."

    Hope this helps,
    EdMan

  11. #11
    seanychen's Avatar
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    Saito 100 Tach Readings: Please Post

    30% might *COST* too much
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  12. #12

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    Saito 100 Tach Readings: Please Post

    Sure 30% will cost ya a bit more $$, but if you want that little extra in power, it's gonna cost ya a little extra in fuel...... pirate:

    EdMan

  13. #13
    rslstft's Avatar
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    Saito 100 Tach Readings: Please Post

    I have found that all my Saitos (have 5, including a twin) just seem to run and idle a little better and smoother with the 30% fuel. I am lucky though, I mix my own and get nitro and alcohol for free.
    Russ

  14. #14

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    Saito 100 Tach Readings: Please Post

    Any advice, please, on how much Nitro you'd recommend for a Saito 170 R3 radial ?
    Thank you.

  15. #15
    seanychen's Avatar
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    Saito 100 Tach Readings: Please Post

    Umm, start w/ 15%?
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  16. #16

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    Saito 100 Tach Readings: Please Post

    Thanks Seanychen,
    Will do

  17. #17
    kram-RCU's Avatar
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    Brand new Saito 100

    After 40 minutes of rich break-in on 15% Cool Power, with a 14 X 8 APC, I peaked at 9,300, flew it at 8,900.

    mt

  18. #18
    seanychen's Avatar
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    RE: Saito 100 Tach Readings: Please Post

    I just ran my Saito 100 w/ 30% nitro Cool Power Heli fuel. I have the following:

    APC 15x6 @ 9900 rpm. On my force gauge, it pulled 12.5 lb of static thrust.
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  19. #19
    cap10b's Avatar
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    RE: Saito 100 Tach Readings: Please Post

    Saito 100

    YS 20/20
    Zinger 14-8 9500 rich
    APC 14-8 9800 rich
    Graupner 13.5-7 10,000 rich

    Zinger Pro 15x6 9200 rich
    APC 15x6N 9400 rich
    Graupner 14-7 9800 rich

    Glug OS-F

    Model
    Kangke USA Cap 232 Sport 8.5 lbs

    Good vertical, can hang on the prop with 14-8 and accelerate from hover straight up
    15-6 Zinger Pro had a little detonation on top end. Good downwind braking, seems to run a little too much RPM for what I like to do, 14-8 is better for me. Also I would run Graupners full time if I could find one in the pitch I want.


    Jds
    I ran out of Altitude, Airspeed and Ideas !

  20. #20
    Ken Bryant's Avatar
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    RE: Saito 100 Tach Readings: Please Post

    Saito 100

    35 degrees farenhiet
    4500 ft
    Wild cat 30% Heli
    APC 15 X 6
    TruTurn spinner
    3rd run from initial break in

    peak 9500
    running 9250
    Ken

  21. #21
    Sprink's Avatar
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    RE: Saito 100 Tach Readings: Please Post

    Coolpower 15%, near sea level.

    APC 15x7 peak 8600
    \"If it doesn\'t break, it is probably too heavy\"

  22. #22

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    RE: Saito 100 Tach Readings: Please Post

    Saito 100
    OS "F" Plug
    Cool Power 30% Heli
    Slimline Pitts Muffler
    Perry Regulating Pump (Tank on CG)

    APC 15x6 11,200 for ~5sec until i got over the shock and throttled down.

    I fly it a 9,900 to 10,000.
    Adrian Martinez

    Great Planes Extra 300S .60 (Flying)
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  23. #23
    seanychen's Avatar
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    RE: Saito 100 Tach Readings: Please Post

    Powermaster 20/20 fuel
    Master Airscrew 14x7 3-blade = 9500 rpm
    Graupner 14x7 3-blade = 8700 rpm
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  24. #24

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    RE: Saito 100 Tach Readings: Please Post

    On 20/20 coolpower fuel and OS Type F plug, peaked...

    APC 14x8 - 9300
    APC 13x10 - 9500

  25. #25
    seanychen's Avatar
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    RE: Saito 100 Tach Readings: Please Post


    Powermaster 20/20 fuel
    Master Airscrew 14x7 Scimitar 2-blade @ 10100 peak

    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!


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