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  1. #51
    IronCross's Avatar
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    RE: Welcome to Club SAITO !

    Thanks for clarifying it Bill... Always an education reading your posts FYI the early .72 also had a very weak (plastic) backplate on it also... The replacement I bought for it was much sturdier and has yet to break... They keep changing these dang mufflers and it is hard to get the earlier replacements... To use the latest ones (cast) requires a new cowl on a few of my planes... Kind of frustrating..
    Inside every older person is a younger person wondering what the hell happened

  2. #52

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    RE: Welcome to Club SAITO !

    [b]IronCross:

    Sorry, intended to include this last time.

    The 10mm thread is a few thousandths of an inch larger than 3/8", the 12mm is a hair smaller than 1/2", and the 14mm is 9/16" diameter. Hope this helps your ID of the pipes.

    Bill.

    PS: Thanks for the kind words. wr.

    EDIT: And the plastic back plates do not help to keep the intake pipes held firmly. The later ones are better, but the pipes are still prone to vibrate and destroy the upper seal. wr.
    Real Airplanes have Two Engines
    AMA 25139 - More than 40 years.

  3. #53

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    RE: Welcome to Club SAITO !

    Is anyone running a .82 with 30% heli fuel and what prop are you using?....i have a UCD .46 propped with a 14wx4 on 15% COOLPOWER and i was wondering what prop to use with 30%

  4. #54
    SigMan's Avatar
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    RE: Welcome to Club SAITO !

    Your in Like Flynn, Donkey Doctor ! [sm=thumbup.gif]
    Club Saito Member #1
    AMA# 542304

  5. #55
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    RE: Welcome to Club SAITO !


    ORIGINAL: tukkus

    Is anyone running a .82 with 30% heli fuel and what prop are you using?....i have a UCD .46 propped with a 14wx4 on 15% COOLPOWER and i was wondering what prop to use with 30%
    See my rpm and thrust data in this thread:

    http://www.rcuniverse.com/forum/m_3311178/tm.htm

    I recommend APC 14x6.
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  6. #56
    Moderator Hobbsy's Avatar
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    RE: Welcome to Club SAITO !

    Sean, that is about 1,100 rpm faster than my .82 gets on 10% WildCat and an APC 14x6, you done good.
    Case 570 Diesel, 188.4 Cu. In. HP==36 @ 1,900 RPM, CR 17.5 to 1. Bore==3.8125, Stroke==4.125

    As competition improves products, the differences between them get smaller and smaller

    Club Saito member #5

  7. #57
    seanychen's Avatar
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    RE: Welcome to Club SAITO !


    ORIGINAL: hobbsy

    Sean, that is about 1,100 rpm faster than my .82 gets on 10% WildCat and an APC 14x6, you done good.
    Saitos this size gains about 500 rpm for each 10% nitro added.

    I think using low nitro on Saito is like putting a stock muffler on a 2 stroke: getting less power for your $.
    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane\'s velocity becomes crash energy!

  8. #58

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    RE: Welcome to Club SAITO !

    Just added another Saito to my flock, herd, covey, whatever; a FA-91S. One question: it's called Special (the "S" after .91). What's special about it? I don't see that designation after any of the other models. It's not made of gold, there's no supercharger, it doesn't have anything on it the other Saitos don't have; so, what's special?
    Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

  9. #59

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    RE: Welcome to Club SAITO !

    [b]The "S" versions usually have hotter cams, more peak power, and worse idle than the older ones.

    Saito claims they idle as well as the older ones, that has not been my experience.

    Bill.
    Real Airplanes have Two Engines
    AMA 25139 - More than 40 years.

  10. #60
    Ernie Misner's Avatar
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    RE: Welcome to Club SAITO !

    Bill, great info as usual. Thanks! Now..... which type of silicone for the intake o-ring.... red? And how do you make a restrictor for your restricted straight pipes???

    Thanks again,

    Ernie

  11. #61

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    RE: Welcome to Club SAITO !

    [b]Ernie:

    I normally uise the plain blue RTV for a couplle reasons. One, it's the most common and easiest to find, and two (the main one) it's the least expensive and I'm cheap.

    Two ways to form a restrictor in an exhaust pipe that wont come loose and fall off. Put a steel bar in a heavy vise, sized about 1/2 the diameter of the pipe. Then use the bar as a mandrel and using a hammer, just peen the end while turning the pipe on the mandrel.

    The second way, if you have full access to the pipe all around, is using a tubing cutter with a very dull cutting wheel. Instead of cutting the pipe the wheen will bend a circumfrential groove in the pipe. When it's as far in as you want it you can cut the pipe normally at the outlet end of the groove, or right in the bottom of the groove.

    I'm working up a post/thread about making inlet stacks for any engine, not just Saito, I show the peening with a mandrel there. If it's unclear here, and you can't wait, I'll post on it here.

    Bill.
    Real Airplanes have Two Engines
    AMA 25139 - More than 40 years.

  12. #62

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    RE: Welcome to Club SAITO !


    ORIGINAL: William Robison

    [b]The "S" versions usually have hotter cams, more peak power, and worse idle than the older ones.

    Saito claims they idle as well as the older ones, that has not been my experience.

    Bill.

    How do you reckon this is gonna affect power delivery for a DR-1 (Great Planes). Obviously, this engine won't be spinning at top rpm very much, planning on a prop in the 15-5 to 16-5 range, depending on what rpms I can turn the larger prop. If I can't get more than 9000 with the bigger one, I'll drop down an inch. Not that I want a lot of top end, but I tend to size my props by how much rpm I can get. If this thing doesn't make much midrange, maybe I need to rethink using this engine for the Fokker.
    Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

  13. #63

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    RE: Welcome to Club SAITO !

    [b]KHodges:

    It's a relative thing. The "S" engines still have good mid range, and throttle well. And at the top end, there is more power to be had.

    But my old ABC FA-120 engines, the low cam ones, idle nicely at 1700-1800 rpm with a MAS 14x8 three blade prop. The FA-120S, while it will spin more prop, is a bear to get under 2200 rpm at idle. Still idles well, just wont do it as slowly.

    The "Middle" production, with the AAC cylinders and the low cams, removed the weight penalty that Saito used to have, if you can find one that might be for you if you have to have the low idle.

    ABC and AAC. How to tell them apart. Easy. If you have one in each hand there's about 5-6 ounces more weight with the ABC. Looking at the cam box, the larger fins on the ABC wont let you pull the cam without pulling the cylinder first. The smaller fins on the AAC give enough room to pull the cam out with the cylinder in place.

    In any case, if you buy new don't be afraid of the "S" engines - they will do the job very well.

    Bill.

    PS: Attached picture is two FA-120 cylinders. ABC on the left, AAC on the right. Difference in size hits you right in the eye. Please note the AAC in this case is the early FA-120S with the pipe intake rather than the cast. Otherwise interchangeable. wr.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Real Airplanes have Two Engines
    AMA 25139 - More than 40 years.

  14. #64

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    RE: Welcome to Club SAITO !

    hi to all
    i have this saito"s
    6/100
    1/91
    3/120
    1/150
    3/180
    ist ok
    maman udi
    israel
    http://img236.exs.cx/img236/9761/extra3004fb.gif

  15. #65
    Moderator Hobbsy's Avatar
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    RE: Welcome to Club SAITO !

    That's not fair Udi, you have one more than I do, you need to add a 2.20 to your list.
    Case 570 Diesel, 188.4 Cu. In. HP==36 @ 1,900 RPM, CR 17.5 to 1. Bore==3.8125, Stroke==4.125

    As competition improves products, the differences between them get smaller and smaller

    Club Saito member #5

  16. #66
    SigMan's Avatar
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    RE: Welcome to Club SAITO !

    hey Udi, 14 saitos must mean 14 planes ? WOW ! you must have to rent hangar space at the local airport..lol.
    Club Saito Member #1
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  17. #67
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    RE: Welcome to Club SAITO !

    Just one. A real purdy 91 that I could not resist. I agree with a previous post, once you have one you want more more more. Way better looking than my Magnum 91 FS or OS 70s (2) or 91.

    Eric
    Keep your stick on the ice and remember, we\'re all in this together..................................

  18. #68

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    RE: Welcome to Club SAITO !

    Uhhhhhh......does having one on order qualify a person for membership......Graupner J-3 arrived this morning, and I just got off the phone with Cheif, FA56 is on the way, $27.05 CHEAPER than LHS, and that includes the freight too.

    So anyway.....FA56 owner-in -waiting here.....

  19. #69

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    RE: Welcome to Club SAITO !

    I want to join. Getting ready to buy a 100 for a Four-Star 60. Heard nothing but good things about
    these motors. Where is the best place online to purchase?
    Ultra Sport Brotherhood #150
    SIG Brotherhood #94
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  20. #70
    SigMan's Avatar
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    RE: Welcome to Club SAITO !

    http://www.horizonhobby.com/Search/D...&OverallCatID=

    horrizon hobbies carries saitos copy and paste link above.
    Club Saito Member #1
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  21. #71
    SigMan's Avatar
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    RE: Welcome to Club SAITO !

    kliff and Mr. Scranford, you guys are official members. WELCOME ABOARD! [sm=thumbup.gif]
    Club Saito Member #1
    AMA# 542304

  22. #72

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    RE: Welcome to Club SAITO !

    Glad to be aboard, now I've got to get a Saito, no choice now that I belong to this club!
    Ultra Sport Brotherhood #150
    SIG Brotherhood #94
    Balsa USA Brotherhood #73

  23. #73

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    RE: Welcome to Club SAITO !

    Coolamundo!

  24. #74

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    RE: Welcome to Club SAITO !


    ORIGINAL: William Robison

    [b]KHodges:

    If you have one in each hand
    One Saito in the hand is worth two on the LHS shelf. Thanks for the info. I have two of the ABC Saitos, a FA-65 and FA-80, and they do run better than my other ones, especially the idle and low end.

    I'd like to see Saito come out with a seven cylinder radial, maybe a 2.80 or 3.92, using the .40 or .56 top ends. Gotta compete with those Seidels and Technopowers!!
    Club Saito #2, WACO Brotherhood #20. What other trouble can I get into?

  25. #75

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    RE: Welcome to Club SAITO !

    Hi Guys.
    Love em to bits, at the moment have, 40a,50,56,72,91x2 (my favorites) and 180 which is in the Flair Giles 202 140 (CMP in the states I think), pictured here.
    Cheers
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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