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  1. #22976
    Moderator Hobbsy's Avatar
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    RE: [Deleted]

    It is going lean as the tank empties, set the HS needle about 300 rpm rich of peak rpm or better yet about 150rpm rich of peak with the tank half empty.
    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

  2. #22977

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    RE: [Deleted]

    hi, thanks Hobbsy, however, tank was 2/3 full when it landed. do you think maybe it still needs to be broken in, or maybe, it is overheating? the temp was 99 and i am 70 feet above sea level, and wind was 8 mph today. how do you feel about using a perry pump?
    AMA # 982277
    3DHS Extra 330 SC 119" DA 170
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  3. #22978
    Moderator Hobbsy's Avatar
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    RE: [Deleted]

    I personally am not a fan of Perry pumps but others love them. I am a fan of the Cline regulator which will let your enginj run exactly the same from full tank to empty no matter where you put the tank. In fact it will save you some fuel as you won't have to run it so rich at the beginning of the flight. Uh oh, I'm spending your money for you again. Others will agree that the Cline regulator or the IronBay are great remedies for poor tank position.

    www.billsroom.com/pcfs
    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

  4. #22979
    Cougar429's Avatar
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    RE: [Deleted]

    smkrcflyer, can you tell us if there were any dimensional differences between the original and new bearing? Was it the front or rear bearing?

    Orthobird, it sounds like the engine may be overheating. Check to make sure you have good airflow over the head and cylinder. One other thing to ask is if you refueled it before the second flight. If so one other place to look is in the fuel pickup. If it has a pinhole in the line or the clunk is not dropping to the lowest level you may be sucking air. Were you flying straight and level when the engine cuts out?
    Club Saito Member # 787
    FA91, 100, 2 X 125a, 150

  5. #22980
    Moderator blw's Avatar
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    RE: [Deleted]

    Ortho,

    Your engine is just broken in to the point to fly. It will keep breaking in for another gallon or two. Getting the engine tuned pretty close is important.
    The ultimate responsibility of pilots is to fulfill the dreams of the countless millions who can only stare skyward...and wish.

    "It's a new day for Auburn" - Gus Malzahn

  6. #22981

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    RE: [Deleted]

    Where can I get Saito bearings? I have a 82A that needs a rear bearing, so I might as well go for both of them at once.

    Horizon Hobby is out of the front, RC Bearings is out of both, and Boca Bearings wants $23 for a set of "Rubber Seal RC Engine Bearings".

    I'd rather stick with either original stock or RC Bearingsl. I'm not sure if I am comfortable with a rubber sealed bearing inside the engine (i.e., the rear bearing). I know that they're supposed to be lubed for life but I don't have any experience with this type of bearing in an RC engine.

    Who else might have Saito bearings and other parts for sale?

    Thanks,

    Bob
    Club Saito #61 Cub Brotherhood #107
    Spitfire Brotherhood #143
    Kadet Brotherhood #3

  7. #22982

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    RE: Welcome to Club SAITO !

    ok, thanks, tomorrow, i will take the revolver again to fly, and i will turn the HSN 1 full turn out, to make it richer, that way, once up in air, if it leans out, it will not lose power. does this sound reasonable?
    AMA # 982277
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  8. #22983
    Moderator blw's Avatar
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    RE: [Deleted]

    Ortho, do you have access to a tachometer? It's best to tune and not look for a certain amount of turning the needle valves. The approach should be to tune the high speed to the highest rpm it will produce. This is the peak. For a new engine, setting the rpm 300-500 rpm richer from peak is the right way to tune. A 4 stroke is different but you'll love it soon enough.
    The ultimate responsibility of pilots is to fulfill the dreams of the countless millions who can only stare skyward...and wish.

    "It's a new day for Auburn" - Gus Malzahn

  9. #22984

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    RE: Welcome to Club SAITO !

    ok blw, i will do just that tomorrow. so i will turn it on, then turn needle til i get max rpm, then i will turn needle out so rpm drops 300 to 500. i will do it and tell you how it goes. thank you.
    AMA # 982277
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  10. #22985
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    RE: Welcome to Club SAITO !

    You can remove the seals from your bearings to promote lubricant flow. Ileave them in the front bearing and remove them from the rear one.
    Club Saito # 677-Team Boca Bearings-Star Collectibles Muscatine-Glowhead Brotherhood #19

  11. #22986
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    RE: [Deleted]

    N1EDM, the rear should be a 6902 OPEN bearing, not rubber sealed or shielded. That way it will get lube and allow the space between the bearings to breath, (also lubing the cam and valvetrain). If the engine case vent is mounted below the cam then you need to equalize pressure to that area anyway.

    The front is listed as an R6-2RS, which is rubber sealed, but I recommend removing the inner seal to allow it also to get lube. The seals pop out easily with a straight pin under the outer edge.

    From my own experience shielded or sealed bearings are wider than non-sealed or shielded. If you opt for one not open you will find the crank does not fit correctly.
    Club Saito Member # 787
    FA91, 100, 2 X 125a, 150

  12. #22987

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    RE: [Deleted]

    Hi Cougar,

    I will agree that most engines have a rear, open bearing. But the stock bearing that came out of the 82 is shielded anyway (not sealed) so the engineers at Saito must have had their reasons.

    Also, Boca recommends these rubber bearings specifically for the 82. They're a reliable source and this is a common engine, so there must be a reason for that too. Not trying to start a side debate here, just curious. I'll double check the specs on the Boca bearings being offered but I am confident that they're the same dimensions...

    I'm just trying to find an alternate dealer who stocks these bearings other than HH, RCBearings and Boca.

    BLW & Hobbsy, what is your opinion about those Rubber Seal bearings that they offer?
    http://www.bocabearings.com/bearing-...aito-fa-82a-82

    Bob
    Club Saito #61 Cub Brotherhood #107
    Spitfire Brotherhood #143
    Kadet Brotherhood #3

  13. #22988

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    RE: [Deleted]

    If you have a Purvis Bearing wharehouse local, they will have them too.
    AMA 908262
    Club Saito 622

    One Trick Pony

    "Yes, but can you do it upside down, backwards, and with your hair on fire"

  14. #22989

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    RE: [Deleted]

    I don't have a Purvis Bearing local warehouse but I do have one nearby under another name that someone reminded me of this morning. I'll try them tomorrow.

    If not, I'll go to Boca but I'd still like to know why Boca recommends the rubber shielded bearings when no one else does...

    Thanks for the help guys. Any and all commens are welcome.

    Bob
    Club Saito #61 Cub Brotherhood #107
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    Kadet Brotherhood #3

  15. #22990

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    RE: Welcome to Club SAITO !

    today was flight number 2 for the saito 125. much better than last week. the engine never stalled. it flwe for 10 minutes. engine was way underpowered, probably too rich, my tach was not working. anyways, thanks to you all for the advice. i appreciate everyone that helped me.
    AMA # 982277
    3DHS Extra 330 SC 119" DA 170
    Bill Hempel Yak 40% DA 170
    Extreme Flight Extra 300 91" DA 60 MTW RE2
    Great Planes Matt Chapman Eagle Cap DA 120
    Extreme FLight Extra 300 78" DA35 (Soon)
    Hangar 9 Extra 260 DA50
    GP Revolver 70 Saito FA1.25

  16. #22991

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    RE: [Deleted]

    The more you fly it, the smoother it will get. They just get better.
    AMA 908262
    Club Saito 622

    One Trick Pony

    "Yes, but can you do it upside down, backwards, and with your hair on fire"

  17. #22992
    sodbuster 1's Avatar
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    RE: [Deleted]

    Thread size for the pressure tap on a 100 muffler anybody?

    Or, where can I get the fitting being that HH is out of stock on them?
    Need one pretty quickly.

    Thanks
    Once you go Yak, you never go back......
    EX Club Saito member # 610

  18. #22993
    Ernie Misner's Avatar
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    RE: [Deleted]

    The hobby shop should have a few different size fittings. JBWeld it in there if necessary and you'll be set.

    Ernie Misner

  19. #22994

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    RE: [Deleted]

    A good morning here in FNQ that has just got better.  2 x Beavers (DH type) float planes flying the circuit with a P3 and a C130.  The sound of road engines plus the roar of the Allison 501 / what ever the military version is great to wake up enough to inspire one to go committ aviation.  Been a bit difficult as the temperature has dropped to 12 degrees centigrade o/nite lately.
    Club Saito member 710

  20. #22995

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    RE: [Deleted]

    Does anyone have 120SDP or 150SDP instruction available?

  21. #22996
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    RE: [Deleted]


    ORIGINAL: sodbuster 1

    Thread size for the pressure tap on a 100 muffler anybody?

    Or, where can I get the fitting being that HH is out of stock on them?
    Need one pretty quickly.

    Thanks

    So I guess no one knows??
    Once you go Yak, you never go back......
    EX Club Saito member # 610

  22. #22997

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    RE: [Deleted]

    On page 907 i was asking questions about the intake o-ring on a .50 well i got to fly it last night... big difference it now runs like it should so THANKS again guys.... also add me to the satio club i own a .30,2 .50s,.91,and a 1.50.....
    AMA #L179949
    IMAA #25458

    SIG Brotherhood #34
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  23. #22998

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    RE: [Deleted]

    I would like to join this club. I am now the proud owner of a GP PT-17 Stearman with a Saito 1.80 Golden Knight under the cowl.
    I have never owned a Saito before and I purchased this one right as I was in a mass removal of all glow engines! Some deals you just cannot pass up!

    Any input, ideas, thoughts or things you think I should know about on this Saito 1.80 would be appreciated.

    (The plumbing on this was in place when I purchased it. She has since been rewired, re-servo'd and replumbed!)





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  24. #22999

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    RE: [Deleted]

    On the Saito 120 and up, I like to use a metal engine mount. However, others disagree. Just my input. Enjoy!

  25. #23000
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    RE: [Deleted]


    ORIGINAL: sodbuster 1


    ORIGINAL: sodbuster 1

    Thread size for the pressure tap on a 100 muffler anybody?

    Or, where can I get the fitting being that HH is out of stock on them?
    Need one pretty quickly.

    Thanks

    So I guess no one knows??
    Hi sodbuster had the same problem two years ago think i got some off an rc car
    Watch out for the ground eh?


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