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  1. #20626
    Moderator Hobbsy's Avatar
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    RE: Welcome to Club SAITO !

    Cory, the velocity stack will not reduce the power on the 1.00, only on the 1.25, the 1.50 has its very own velocity stack that it shares with the 1.80. If someone claimed to have lost poweer using the velocity stack on the 1.00 it is because they didn't lean the engine to compensate for the blow back fuel being saved and going into the engine instead of just blowing away in the wind.
    Farmall 240 the final issue of the Farmall C, Super C, 200, 230 series.
    122 Cu. In. 22 hp. A small tractor that would do big work due to its 10x36 inch rear tires.

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

    Club Saito member #5

  2. #20627
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    RE: Welcome to Club SAITO !

    ORIGINAL: Hobbsy

    Cory, the velocity stack will not reduce the power on the 1.00, only on the 1.25, ......
    .....And then only about 250-300 RPM on the 125, all other things being equal.

    Thanks for the tip and pics on the 125 stack mod, Hobbsy. Copy of your prototype is now on my list of projects for the week.
    "The American taxpayer has always been politicaly deceived. It's their Birthright!"
    Lord Mountjoy, 'The Mouse on the Moon'

  3. #20628
    Moderator Hobbsy's Avatar
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    RE: Welcome to Club SAITO !

    Be careful drilling out the hole in the steel part of the velocity stack, it can take nasty chunks out of your finger fast if it comes loose from whatever you clamp it onto.
    Farmall 240 the final issue of the Farmall C, Super C, 200, 230 series.
    122 Cu. In. 22 hp. A small tractor that would do big work due to its 10x36 inch rear tires.

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

    Club Saito member #5

  4. #20629

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    RE: Welcome to Club SAITO !

    I got one on the way, and got free shipping since I got my Dad to order the Saito 82 for his cub.

    ORIGINAL: Hobbsy

    Be careful drilling out the hole in the steel part of the velocity stack, it can take nasty chunks out of your finger fast if it comes loose from whatever you clamp it onto.
    I've got a 100 so i shouldn't need to mod it. But yeah, I can see the happening. I'm a machinist by trade and we're pretty good at avoiding such incidents. Hint: I learned from past experiences

    Work just called and canceled my free days for the rest of the week, between that and laying down 5 acres of hay today I guess I won't get to play musical exhaust parts this week either.

    Thanks
    Cory

  5. #20630

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    RE: Welcome to Club SAITO !

    Hi Dave,

    These are not on the site. They were a special order for a customer and I had a few extra made. They all have a 12mm thread.

    Jim


    Cory,
    I am not sure how much back pressure you would get if you tapped this fitting.
    RC Specialties, LLC, Four Stroke Mufflers and 90 Degree Exhaust Adapters

  6. #20631
    Moderator blw's Avatar
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    RE: Welcome to Club SAITO !

    BTW, I checked on my order for a metal backplate for the 72/82 at the lhs. Still on backorder!
    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

  7. #20632
    Moderator blw's Avatar
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    RE: Welcome to Club SAITO !

    BTW, I checked on my order for a metal backplate for the 72/82 at the lhs. Still on backorder!
    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

  8. #20633
    Daniel-EL's Avatar
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    RE: Welcome to Club SAITO !

    I have a first run Saito 150, bought in the early '90's, which has been bench run (sort of) only, never flown. This is the most ornery engine I've ever owned. It throws the spinner, prop nuts and prop almost every time I try to start it. This after double-nutting the prop, too. I have never been able to get it to run long enough to get the needles set properly because, once I get it started and start tweaking the needle valve I will get a mouth full of spinner and prop nuts from the inevitable back fire. I thought about selling it, but I'm afraid I'd just be passing along this problem to somebody else in bad faith. Does anyone have any advice about taming this beast before I consign it to the junk heap?[:@]
    I don\'\'t necessarily believe everything I say
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  9. #20634
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    RE: Welcome to Club SAITO !


    ORIGINAL: Daniel-EL

    I have a first run Saito 150, bought in the early '90's, which has been bench run (sort of) only, never flown. This is the most ornery engine I've ever owned. It throws the spinner, prop nuts and prop almost every time I try to start it. This after double-nutting the prop, too. I have never been able to get it to run long enough to get the needles set properly because, once I get it started and start tweaking the needle valve I will get a mouth full of spinner and prop nuts from the inevitable back fire. I thought about selling it, but I'm afraid I'd just be passing along this problem to somebody else in bad faith. Does anyone have any advice about taming this beast before I consign it to the junk heap?[:@]
    If it's spitting spinners and/or props, that is generally an indication of running the engine excessively lean (low and/or high speed needle). Richen it right up and then try getting the needles right.

  10. #20635
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    RE: Welcome to Club SAITO !

    Good advice raven.I've just begun running the new fa200r3 radial,sounds sweeter than the best looking green eyed redhead i ever saw.Problem is it nearly always runs on just two cylinders.It's had three short five minute runs at or below four thousand.After the first run i popped the rocker cover off the cold cylinder and the intake pushrod had popped out of it's cup,fixed that and it still won't fire on that pot,rechecked the valves too.I was 5 turns out on the main as per the book,so tried as low as three and can't clear the cylinder.Plugs are good,fresh fuel...what am i missing??..apart from my pretty green eyed redhead
    Watch out for the ground eh?

  11. #20636
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    RE: Welcome to Club SAITO !

    G'day

    You may well have one of the early High Compression engines. They were built to run without or with minimal nitro. You can get them tamed by finding an engine expert who will put a shim (15 thou I think) under the cylinder. This makes them much tamer. A friend of mine has one which had all the symptoms you describe but when he had the compression lowered it was a different engine.

    I have one of the later low compression ones and it is a big softy to run. Just get it wet with a prime, one back flip and it starts. Never throws props either.

    The only Saito I have had throw a prop was a Saito 30 which was sitting for several months and when I tried to start it I under primed it and it tossed the prop off. Never did find the nuts.

    Another I saw toss props was trying to tell us that its conrod was about to seize on the crank pin. It did seize soon after and tossed the prop in mid air. Quite impressive. It was a very old Saito 65 with hundreds of hours on it. It is about to get a new crank, conrod and be back in the air. Possibly some bearing too.

    I am sure someone will chime in here with more detailed advice on your 150.

    In the mean time, try it with zero nitro or no more than 5% and you might find it a completely different beast.

    Mike in Oz

    \"I just had no control. Must be the radio.\" Club Saito #597 Kadet Brotherhood #66

  12. #20637
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    RE: Welcome to Club SAITO !


    ORIGINAL: Old Fart

    Good advice raven.I've just begun running the new fa200r3 radial,sounds sweeter than the best looking green eyed redhead i ever saw.Problem is it nearly always runs on just two cylinders.It's had three short five minute runs at or below four thousand.After the first run i popped the rocker cover off the cold cylinder and the intake pushrod had popped out of it's cup,fixed that and it still won't fire on that pot,rechecked the valves too.I was 5 turns out on the main as per the book,so tried as low as three and can't clear the cylinder.Plugs are good,fresh fuel...what am i missing??..apart from my pretty green eyed redhead
    I'm no Saito expert but a club member had an R3 radial (not sure the size). One cylinder dropping out was very common until the engine was fully run in. Despite lots of bench running with and without glow, he still needed to run glow drivers for the first few flights. Running the engine in whilst in flight seemed to best way to sold the dropped cylinder problem.

    I'm sure owners of Saito radials can provide some more informed advice.

  13. #20638

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    RE: Welcome to Club SAITO !

    HI, only just recently, got into Saito's, couple of 56's rebuilt one (mate sold it to me with a bent crank) 2 45 and a rebuilt 45s was a 45 but i bought all the bits to make it a 45s, not run yet, I am now in the process of conveting a 180 over to gas (petrol) , that's earmarked for a 80 " "Firefly " Vanguard models kit, any thoughts guys on the coversion????
    Barry
    everyday you wake up is a good day

  14. #20639

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    RE: Welcome to Club SAITO !

    HI, only just recently, got into Saito's, couple of 56's rebuilt one (mate sold it to me with a bent crank) 2 45 and a rebuilt 45s was a 45 but i bought all the bits to make it a 45s, not run yet, I am now in the process of conveting a 180 over to gas (petrol) , that's earmarked for a 80 " "Firefly " Vanguard models kit, any thoughts guys on the conversion????
    Barry
    everyday you wake up is a good day

  15. #20640
    Hill202's Avatar
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    RE: Welcome to Club SAITO !

    Does anyone know where I can find pistons for a Saito FA90T MK2 ?

    Horizon does not have them.

    Thanks
    Grammar: The difference in knowing your sh*t and knowing you\'\'re sh*t.

  16. #20641
    Moderator w8ye's Avatar
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    RE: Welcome to Club SAITO !

    The 90T uses the same pistons as the 45 MK II?

    Unless a piston is badly damaged, I'm sure you engine will run fine with the original pistons.
    Attended the CutFinger Institute of DirtNap University for years but never did graduate....
    Recipient, Mangledhand award August 2008
    Club Saito Member #7
    Original AMA #31261

  17. #20642

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    RE: Welcome to Club SAITO !

    Have you checked out E/Bay???? for 45 pistons, Phils hobbies might have
    Barry
    everyday you wake up is a good day

  18. #20643
    Daniel-EL's Avatar
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    RE: Welcome to Club SAITO !


    ORIGINAL: mike109

    You may well have one of the early High Compression engines. They were built to run without or with minimal nitro. You can get them tamed by finding an engine expert who will put a shim (15 thou I think) under the cylinder. This makes them much tamer. A friend of mine has one which had all the symptoms you describe but when he had the compression lowered it was a different engine.

    I have one of the later low compression ones and it is a big softy to run. Just get it wet with a prime, one back flip and it starts. Never throws props either.

    In the mean time, try it with zero nitro or no more than 5% and you might find it a completely different beast.

    Mike in Oz
    Thanks for your response, Mike, it makes perfect sense. Yes the compression is brutal on this early model. I'll see if I can get a shim installed somewhere.

    Dan
    I don\'\'t necessarily believe everything I say
    ...Marshall McLuhan...

  19. #20644
    Moderator Hobbsy's Avatar
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    RE: Welcome to Club SAITO !

    Dan, I have that same engine and a little education on your part will work wonders, it's a great engine with big %alls. When starting it be very careful to not get it too rich and then once started sneak up on the peak rpm very cautiously until you learn where it is. I like to sart mine with a starter without prining it in any way.. Set the throttle about 1/8 above idle and it will pick up the fuel and just gently start. If it is from about 1991 the compression ratio is 14.4 to 1 and will run really well on 5% or 10% nitro. It will run on 15 or 20% but extra caution is needed. I also have an .80 like that, it will actually run on Davis Diesel fuel unaided. I've never tried the 1.50 on Davis fuel but I'm sure it would fire right up on it. If you talk to w8ye and trust me, ship it to me and I'll break it in and set it up for you. No charge.
    Farmall 240 the final issue of the Farmall C, Super C, 200, 230 series.
    122 Cu. In. 22 hp. A small tractor that would do big work due to its 10x36 inch rear tires.

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

    Club Saito member #5

  20. #20645

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    RE: Welcome to Club SAITO !

    Just realized that we never hit submit order so the order never went through.While we are at it what stack should we get for the 82?

    Thanks
    Cory

  21. #20646

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    RE: Welcome to Club SAITO !

    Hello Barry, You might want to review this conversion thread for 4-strokes http://www.rcuniverse.com/forum/m_93..._6/key_/tm.htm there are a few other threads & many have accomplished this. C & H Ignitions is up and running again. Great new smaller & lighter ignition that is compatible with lipo bateries. Contact Adrain Ciulei who makes the new ignitions and has also posted on these conversion threads with some really creative work. He has also converted a FA150 adrain4u@msn.com Good Luck, & keep in touch as many here are familiar with the conversion process.

    Mike Brennan
    Club Saito #723
    T-man49 in Alabama

  22. #20647
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    RE: Welcome to Club SAITO !

    ORIGINAL: w8ye

    The 90T uses the same pistons as the 45 MK II?

    Unless a piston is badly damaged, I'm sure your engine will run fine with the original pistons.
    I have been through a lot of motors and have not yet found one that needed pistons unless a bearing cage had shattered or someone ran it extremly lean. Never from just wearing out from normal use.

    As w8ye said above. If no gouges or chunks missing, clean 'em and run with what you've got.



    On another note; Still fighting this 91s. Pulled the jug again and inspected the valves. Seats look good but both valves have quite a groove worn in them. They seemed to seal ok but I've ordered new valves, springs and tappets any way. Cam looks good so I'll keep it, but after looking through some the Esteemed Wm Robisons (and co.) posts, tips and observations I'm replacing those other parts of the valve train.

    Hopefully I'll find my missing 1000-1500 RPM there.

    Am I correct in determining that the consensus among the remaining "Saito seat of knowledge and expertise" (w8ye, hobbsy and blw) is NOT to lap the valves in? Just clean the seats with a fat pencil eraser in a drill?

    "The American taxpayer has always been politicaly deceived. It's their Birthright!"
    Lord Mountjoy, 'The Mouse on the Moon'

  23. #20648
    Hill202's Avatar
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    RE: Welcome to Club SAITO !

    Thanks for the tips about pistons. I thought since I am replacing rings, it would be a good idea to replace the pistons. One ring broke as I was taking it off. It seemed to just crumble. It was very brittle.
    Grammar: The difference in knowing your sh*t and knowing you\'\'re sh*t.

  24. #20649
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    RE: Welcome to Club SAITO !


    ORIGINAL: Old Fart

    Good advice raven.I've just begun running the new fa200r3 radial,sounds sweeter than the best looking green eyed redhead i ever saw.Problem is it nearly always runs on just two cylinders.It's had three short five minute runs at or below four thousand.After the first run i popped the rocker cover off the cold cylinder and the intake pushrod had popped out of it's cup,fixed that and it still won't fire on that pot,rechecked the valves too.I was 5 turns out on the main as per the book,so tried as low as three and can't clear the cylinder.Plugs are good,fresh fuel...what am i missing??..apart from my pretty green eyed redhead
    Let me guess which cylinder keeps going cold... facing the front of the engine, is it the one on the lower left? I've had the same problem with a 170R3 and it requires a glow driver for any throttle setting below 1/3 (more when you're running it rich for break in). I use SonicTronics/McDaniel glow drivers on all my Saito radials and use only NiCd batteries. NiMH will not work.
    ...and then the unthinkable happened!

  25. #20650
    Old Fart's Avatar
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    RE: Welcome to Club SAITO !

    Thanks for that mate.
    Watch out for the ground eh?


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