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  1. #21751

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    RE: Welcome to Club SAITO !

    *
    Hi all
    I'm hoping someone can shed some light on a "problem" i'm having with my 325R5 radial, namely excessive oil coming from the crankcase drain nipple. I have a silicon tube attached so I can see the flow.Not just drops, but a steady dribble...
    The engine only has a couple of hours run time on it, mostly on the bench in the past few weeks. It sat for about 8 months after a maiden flight crash :-( so I'm concerned that there may be something rusted inside. Could it be the rings?
    It hand starts, idles and revs hard, all cylinders firing, no problem. I've twiddled the needles but it wasn't like this last year...
    I also have a 200R3 powering a 68" Su-31, with nothing more than the occasional drip from the vent.
    Any suggestions / ideas will be welcome.
    Regards, RossG
    radial1951
    _____________
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  2. #21752

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    RE: Welcome to Club SAITO !

    Thanks for all the tips!! I have thrown in the towl. I believe there is something wrong internaly. I have sent it out to HH to have them tear it down and let me know. I went through a quart a gas. I had to keep glow on it to even tune it. So tried a new glow plug. No go. So off it goes, it's hard to tune the untuneable!
    Fly high!!! To avoid the GROUND!
    Yak 55m 74inch, escapade 40, ultra stick 40

  3. #21753
    Ernie Misner's Avatar
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    RE: Welcome to Club SAITO !

    >>> I'm hoping someone can shed some light on a "problem" i'm having with my 325R5 radial, namely excessive oil coming from the crankcase drain nipple. I have a silicon tube attached so I can see the flow. Not just drops, but a steady dribble...

    The engine only has a couple of hours run time on it, mostly on the bench in the past few weeks. It sat for about 8 months after a maiden flight crash :-( so I'm concerned that there may be something rusted inside. Could it be the rings? >>>

    You mentioned that it still idles great and pulls hard so it doesn't seem likely that the rings are frozen in place from congealed oil. (was there any castor even in the mix?) Any noise or play seem to be coming from the bearings? If so, crud from them could have taken out a ring or two. Are you sure it didn't always have that much oil coming out the breather.... lots of fuel and oil going through that big mill. Keep us posted!

    Ernie Misner

  4. #21754

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    RE: Welcome to Club SAITO !

     I have a dynaflite super decathlon, with saito FG 36
    no maiden flight yet,
    almost earlier today,
    except, engine conked out on runway when i fully accelerated.

    i have a problem.

    engine has been run in my backyard for over 1 1/2 hours
    using 20 to 1 oil mix, as prescribed by Saito.

    I was set to fly plane today.

    I built cowl with a total of 3 air inlet holes on the cowl front face.
      the outlet areas are much larger area thab the three intake holes.






    took plane to airfield, turned on engine, and it was revving fine,

    i then taxi'ed plane on runway, and walked behind it, warming up engine, and little up and down revving.  right before take off, i put full throttle whilst still holding the plane, just to do one last check.
    it appeared to hesitate very minimal, once i let go of plane, full throttle, and it began to lose speed and engine almost shut off, i decreased throttle, and 

    aborted flight.


    while cowl was still on, i tested again,

    i turned on engine, then began to throttle, and on doing so, it sounded like engine wants to die 
    if i do not decreased throttle, it would shut off for sure.

    i can throttle from iddle to about 1/4 speed, past this, and it wants to die.

    i know engine is hot by now

    so it sounds to me like there is an issue with airflow in the cowl, or warm air, or turbulunce issues.


    does anyone have any suggestions,.

    i do not want to fly plane with out the cowl.

    if the cowl is off, the engine runs fine
    and i can get 7800 rpm with a 18 x 8 prop
    AMA # 982277
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  5. #21755
    Mein Duff's Avatar
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    RE: Welcome to Club SAITO !

    Maybe you could post a few pics of the size and placement of the 3 cooling holes? It might be a good idea to install some baffles which would deflect more cooling air to the cylinder head area.
    Fleet Brotherhood #5
    Half A Wing, Three Engines and A Prayer

  6. #21756
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    RE: Welcome to Club SAITO !

    It may be tuned slightly too lean and / or is tending to get hot with the cowling in place. If it runs fine without the cowling then there is definitely something wrong with the air flow when the cowling is in place. It may need more break in time as well. You can try increasing the size of the openings or fly it without the cowling altough you don't want to for some reason. Try richening it up a little and see how it goes. Keep us posted.....

    Ernie Misner

  7. #21757

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    RE: Welcome to Club SAITO !

    i have to fly with cowl, because i added 6 ounces of weight in it
    this is necessary, since plane is tail heavy,
    and with these weights, the CG is at where dynaflite wants it,
    i have already put weights under the gas tank, about 5 ounces there as well.
    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

  8. #21758
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    RE: Welcome to Club SAITO !

    I had the same problem with my FG30. I had to retune the engine so that it was a bit richer with the cowl off. When I installed the cowl it would lean out.It took some trial and error till I got it right. This is the same problem I have had in the past with some of my 2 strokes when they are tightly cowled.
    Larry
    Saito Club #692
    AMA#128736

  9. #21759

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    RE: Welcome to Club SAITO !

    here is the pic

    any suggestions would be great
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    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

  10. #21760

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    RE: Welcome to Club SAITO !

    here is the pic

    any suggestions would be great
    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

  11. #21761

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    RE: Welcome to Club SAITO !

    well, most of the cylinder and the whole cylinder head is out in the airstream. I can't see how that is causing the problem. Is it possible that a fuel line is getting pinched by the cowl?
    Content, but not Complacent.

  12. #21762

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    RE: Welcome to Club SAITO !

    i will check that
    but i do not believe that is the case.
    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

  13. #21763
    Ernie Misner's Avatar
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    RE: Welcome to Club SAITO !

    Gasoline isn't going to give you the cooling effect that an alcohol burning engine receives. If the problem persists and it still runs great without the cowling, I would absolutely open up those cooling holes larger and larger as necessary. And you are correct that the exit opening needs to be 2 - 3 times more area than the entrance openings. It helps that the cylinder is mostly exposed but gasoline can run very hot. How does the plug look when it dies? It should be just tan in color, not whiteish. And once again make sure it is plenty rich especially until you get more time on it.

    Ernie Misner

  14. #21764

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    RE: Welcome to Club SAITO !

    Thank you Ernie
    That is what I will do

    I will update you after it is done
    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

  15. #21765

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    RE: Welcome to Club SAITO !

    update

    i opened the three front openings up more on the cowl
    then i made 4 small holes on the top of cowl, where i could see the high speed needle and use a special thin screwdriver, with which
    i could adjust HSN with engine and cowl on.

    took plane to my back yard, this time, with cowl still on.

    turned engine on, within a minute of allowing engine to warm up, i tried to rev engine up, and it was doing same thing as yesterday.
    i brought out my screwdriver, and
    i did have to richen the flow of gas by about 1 1/2 turns
    and then it had power
    i got 7950 rpm with a 18 x 8 master airscrew prop
    and was able to run it for about 20 minutes, no conking out
    howeverthe only thing is that once in a while, it would hiccup, but would not turn off.

    i wonder if i need to make an airscoop that will flow air near to carb opening?
    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. #21766

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    RE: Welcome to Club SAITO !

    [youtube][/youtubehttp://www.youtube.com/watch?v=6ChTLNYWHdI

    http://www.youtube.com/watch?v=6ChTLNYWHdI


    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

  17. #21767
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    RE: Welcome to Club SAITO !

    The air inside of the cowling should be fine for carb intake unless the cowling is ridicously close to the carb intake and restricting it some how which isn't likely. You are making good progress. I think the hicup will go away when you get more time one it and are able to lean it out slightly from where you are at this point. Keep us posted, good work.

    Ernie Misner

  18. #21768
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    RE: Welcome to Club SAITO !

    ORIGINAL: Ernie Misner

    It may be tuned slightly too lean and / or is tending to get hot with the cowling in place. If it runs fine without the cowling then there is definitely something wrong with the air flow when the cowling is in place. It may need more break in time as well. You can try increasing the size of the openings or fly it without the cowling altough you don't want to for some reason. Try richening it up a little and see how it goes. Keep us posted.....

    Ernie Misner

    ^^^^X2.^^^^

    Tune it on the rich side.
    Club Saito #785 - FA91S, FA150, FA180, FA180HC/BBC, FA200TI, FA300TTDP: All with CH Ignitions CDI/Glow fuel
    SIG BH #41 - 1/3 Spacewalker

  19. #21769

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    RE: Welcome to Club SAITO !

    update, flew the plane today, maiden flight
    the engine did great
    had a 18 x 8 nylon prop
    prior to flight, it was a warmer day than any other day i had the plane,
    i made the gas flow richer again by 1/2 turn
    got 7800 rpm on the tach

    whole flight, not a single problem with engine,
    very strong throughout.

    thanks guys for all the help.
    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

  20. #21770
    Mein Duff's Avatar
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    RE: Welcome to Club SAITO !

    The sweet smell of success ! Congrats !
    Fleet Brotherhood #5
    Half A Wing, Three Engines and A Prayer

  21. #21771
    Ernie Misner's Avatar
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    RE: Welcome to Club SAITO !

    Did you use about 25 cents worth of gas?.....

    Ernie

  22. #21772

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    RE: Welcome to Club SAITO !

    thanks again Ernie,
    engine is a dream!!!
    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

  23. #21773
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    RE: Welcome to Club SAITO !


    ORIGINAL: cshahrdar

    update, flew the plane today, maiden flight
    the engine did great
    had a 18 x 8 nylon prop
    prior to flight, it was a warmer day than any other day i had the plane,
    i made the gas flow richer again by 1/2 turn
    got 7800 rpm on the tach

    whole flight, not a single problem with engine,
    very strong throughout.

    thanks guys for all the help.

    I guess I should be happy W/my (spark ignition) FA 150 running on E85/Klotz turning a nylon 18X8 @ 7500 RPM.

    It turns the same 7800 RPM W/the 18X8 as your FG 36 when I run 15% Cool Power on the electronic ignition but it burns through 16oz of fuel in 12 minutes @ WOT.

    I ran the E85/Klotz @ WOT for 15 minutes & only used about 8oz of fuel.

    I need to put a pump/regulator on the glow carb as it is erratic as far as tuning. ST Engines has been developing the P/R as a less expensive, lighter, more compact alternative to going to a Walbro carburetor.
    Club Saito #785 - FA91S, FA150, FA180, FA180HC/BBC, FA200TI, FA300TTDP: All with CH Ignitions CDI/Glow fuel
    SIG BH #41 - 1/3 Spacewalker

  24. #21774
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    RE: Welcome to Club SAITO !

    deleted
    Club Saito #785 - FA91S, FA150, FA180, FA180HC/BBC, FA200TI, FA300TTDP: All with CH Ignitions CDI/Glow fuel
    SIG BH #41 - 1/3 Spacewalker

  25. #21775

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    RE: Welcome to Club SAITO !

    What's the chance of seeing some pics of your 150 with the ignition pickup installed?
    Thanks
    KenD
    Club Saito Member #773
    AMA 64943
    IMAA 23743
    VRCS 550


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